Added API documentation, still much room for improvement.

- renamed .markdown files to .md
- a fix in the about page
- a new (still empty) API page

.gitignore

@@ -1,161 +1,3 @@
-# Created by https://www.gitignore.io
-
-*.log
-
-### Gradle ###
-.gradle
-build/
-
-# Ignore Gradle GUI config
-gradle-app.setting
-
-# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
-!gradle-wrapper.jar
-
-
-### Intellij ###
-# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm
-
-*.iml
-
-## Directory-based project format:
-.idea/
-# if you remove the above rule, at least ignore the following:
-
-# User-specific stuff:
-# .idea/workspace.xml
-# .idea/tasks.xml
-# .idea/dictionaries
-
-# Sensitive or high-churn files:
-# .idea/dataSources.ids
-# .idea/dataSources.xml
-# .idea/sqlDataSources.xml
-# .idea/dynamic.xml
-# .idea/uiDesigner.xml
-
-# Gradle:
-# .idea/gradle.xml
-# .idea/libraries
-
-# Mongo Explorer plugin:
-# .idea/mongoSettings.xml
-
-## File-based project format:
-*.ipr
-*.iws
-
-## Plugin-specific files:
-
-# IntelliJ
-/out/
-
-# mpeltonen/sbt-idea plugin
-.idea_modules/
-
-# JIRA plugin
-atlassian-ide-plugin.xml
-
-# Crashlytics plugin (for Android Studio and IntelliJ)
-com_crashlytics_export_strings.xml
-crashlytics.properties
-crashlytics-build.properties
-
-
-### Eclipse ###
-*.pydevproject
-.metadata
-.gradle
-bin/
-tmp/
-*.tmp
-*.bak
-*.swp
-*~.nib
-local.properties
-.settings/
-.loadpath
-
-# Eclipse Core
-.project
-
-# External tool builders
-.externalToolBuilders/
-
-# Locally stored "Eclipse launch configurations"
-*.launch
-
-# CDT-specific
-.cproject
-
-# JDT-specific (Eclipse Java Development Tools)
-.classpath
-
-# PDT-specific
-.buildpath
-
-# sbteclipse plugin
-.target
-
-# TeXlipse plugin
-.texlipse
-
-
-### Linux ###
-*~
-
-# KDE directory preferences
-.directory
-
-# Linux trash folder which might appear on any partition or disk
-.Trash-*
-
-
-### OSX ###
-.DS_Store
-.AppleDouble
-.LSOverride
-
-# Icon must end with two \r
-Icon
-
-
-# Thumbnails
-._*
-
-# Files that might appear in the root of a volume
-.DocumentRevisions-V100
-.fseventsd
-.Spotlight-V100
-.TemporaryItems
-.Trashes
-.VolumeIcon.icns
-
-# Directories potentially created on remote AFP share
-.AppleDB
-.AppleDesktop
-Network Trash Folder
-Temporary Items
-.apdisk
-
-
-### Windows ###
-# Windows image file caches
-Thumbs.db
-ehthumbs.db
-
-# Folder config file
-Desktop.ini
-
-# Recycle Bin used on file shares
-$RECYCLE.BIN/
-
-# Windows Installer files
-*.cab
-*.msi
-*.msm
-*.msp
-
-# Windows shortcuts
-*.lnk
-
+_site
+.sass-cache
+.jekyll-metadata

.travis.yml

@@ -1,3 +0,0 @@
-language: java
-jdk:
-  - oraclejdk8

CONTRIBUTING.md

@@ -1,24 +0,0 @@
-# Contributing
-
-We love pull requests from everyone. Please be nice and forgive us
-if we can't process your request right away.
-
-Fork, then clone the repo:
-
-    git clone git@github.com:your-username/Jabit.git
-
-Make sure the tests pass:
-
-    ./gradlew test
-
-Make your change. Add tests for your change. Make the tests pass:
-
-    ./gradlew test
-
-Push to your fork and [submit a pull request][pr].
-
-[pr]: https://github.com/Dissem/Jabit/compare/
-
-Unfortunately we can't always answer right away, so we ask you to have
-some patience. Then we may suggest some changes or improvements or
-alternatives.

LICENSE

@@ -1,201 +0,0 @@
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_config.yml

@@ -0,0 +1,20 @@
+# Welcome to Jekyll!
+#
+# This config file is meant for settings that affect your whole blog, values
+# which you are expected to set up once and rarely need to edit after that.
+# For technical reasons, this file is *NOT* reloaded automatically when you use
+# 'jekyll serve'. If you change this file, please restart the server process.
+
+# Site settings
+title: Jabit
+email: chrigu.meyer@gmail.com
+description: > # this means to ignore newlines until "baseurl:"
+  You want to create an awesome Bitmessage app using Jabit? Then you've come
+  to the right place!
+baseurl: "/Jabit" # the subpath of your site, e.g. /blog
+url: "http://dissem.github.io" # the base hostname & protocol for your site
+# twitter_username: jekyllrb
+github_username:  Dissem
+
+# Build settings
+markdown: kramdown

_drafts/2016-06-22-project-setup.markdown

@@ -0,0 +1,29 @@
+---
+layout: post
+title:  "Setting up Jabit for Your Project"
+date:   2016-06-22 00:01:00 +0200
+categories: setup
+---
+
+Add Jabit as Gradle dependency:
+
+{% highlight groovy %}
+compile 'ch.dissem.jabit:jabit-core:1.0.0'
+{% endhighlight %}
+
+Unless you want to implement your own, also add the following:
+
+{% highlight groovy %}
+compile 'ch.dissem.jabit:jabit-networking:1.0.0'
+compile 'ch.dissem.jabit:jabit-repositories:1.0.0'
+compile 'ch.dissem.jabit:jabit-cryptography-bouncy:1.0.0'
+{% endhighlight %}
+
+And if you want to import from or export to the Wallet Import Format (used by PyBitmessage) you might also want to add:
+
+{% highlight groovy %}
+compile 'ch.dissem.jabit:jabit-wif:1.0.0'
+{% endhighlight %}
+
+For Android clients use `jabit-cryptography-spongy` instead of `jabit-cryptography-bouncy`.
+

_drafts/2016-06-22-using-the-api.markdown

@@ -0,0 +1,54 @@
+---
+layout: post
+title:  "Using the Jabit API"
+date:   2016-06-22 00:02:00 +0200
+categories: setup
+---
+
+### Usage
+
+First, you'll need to create a `BitmessageContext`:
+
+{% highlight java %}
+JdbcConfig jdbcConfig = new JdbcConfig();
+BitmessageContext ctx = new BitmessageContext.Builder()
+        .addressRepo(new JdbcAddressRepository(jdbcConfig))
+        .inventory(new JdbcInventory(jdbcConfig))
+        .messageRepo(new JdbcMessageRepository(jdbcConfig))
+        .nodeRegistry(new MemoryNodeRegistry())
+        .networkHandler(new NetworkNode())
+        .cryptography(new BouncyCryptography())
+        .build();
+{% endhighlight %}
+
+This creates a simple context using a H2 database that will be created in the user's home directory. Next you'll need to
+start the context and decide what happens if a message arrives:
+
+{% highlight java %}
+ctx.startup(new BitmessageContext.Listener() {
+    @Override
+    public void receive(Plaintext plaintext) {
+        // TODO: Notify the user
+    }
+});
+{% endhighlight %}
+
+Then you might want to create an identity
+
+{% highlight java %}
+BitmessageAddress identity = ctx.createIdentity(false, Pubkey.Feature.DOES_ACK);
+{% endhighlight %}
+
+or add some contacts
+
+{% highlight java %}
+BitmessageAddress contact = new BitmessageAddress("BM-2cTarrmjMdRicKZ4qQ8A13JhoR3Uq6Zh5j");
+address.setAlias("Chris");
+ctx.addContact(contact);
+{% endhighlight %}
+
+to which you can send some messages
+
+{% highlight java %}
+ctx.send(identity, contact, "Test", "Hello Chris, this is a message.");
+{% endhighlight %}

_includes/footer.html

@@ -0,0 +1,38 @@
+<footer class="site-footer">
+
+  <div class="wrapper">
+
+    <h2 class="footer-heading">{{ site.title }}</h2>
+
+    <div class="footer-col-wrapper">
+      <div class="footer-col footer-col-1">
+        <ul class="contact-list">
+          <li>{{ site.title }}</li>
+          <li><a href="mailto:{{ site.email }}">{{ site.email }}</a></li>
+        </ul>
+      </div>
+
+      <div class="footer-col footer-col-2">
+        <ul class="social-media-list">
+          {% if site.github_username %}
+          <li>
+            {% include icon-github.html username=site.github_username %}
+          </li>
+          {% endif %}
+
+          {% if site.twitter_username %}
+          <li>
+            {% include icon-twitter.html username=site.twitter_username %}
+          </li>
+          {% endif %}
+        </ul>
+      </div>
+
+      <div class="footer-col footer-col-3">
+        <p>{{ site.description }}</p>
+      </div>
+    </div>
+
+  </div>
+
+</footer>

_includes/head.html

@@ -0,0 +1,12 @@
+<head>
+  <meta charset="utf-8">
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+
+  <title>{% if page.title %}{{ page.title | escape }}{% else %}{{ site.title | escape }}{% endif %}</title>
+  <meta name="description" content="{% if page.excerpt %}{{ page.excerpt | strip_html | strip_newlines | truncate: 160 }}{% else %}{{ site.description }}{% endif %}">
+
+  <link rel="stylesheet" href="{{ "/css/main.css" | prepend: site.baseurl }}">
+  <link rel="canonical" href="{{ page.url | replace:'index.html','' | prepend: site.baseurl | prepend: site.url }}">
+  <link rel="alternate" type="application/rss+xml" title="{{ site.title }}" href="{{ "/feed.xml" | prepend: site.baseurl | prepend: site.url }}">
+</head>

_includes/header.html

@@ -0,0 +1,28 @@
+<header class="site-header">
+
+  <div class="wrapper">
+
+    <a class="site-title" href="{{ site.baseurl }}/">{{ site.title }}</a>
+
+    <nav class="site-nav">
+      <a href="#" class="menu-icon">
+        <svg viewBox="0 0 18 15">
+          <path fill="#424242" d="M18,1.484c0,0.82-0.665,1.484-1.484,1.484H1.484C0.665,2.969,0,2.304,0,1.484l0,0C0,0.665,0.665,0,1.484,0 h15.031C17.335,0,18,0.665,18,1.484L18,1.484z"/>
+          <path fill="#424242" d="M18,7.516C18,8.335,17.335,9,16.516,9H1.484C0.665,9,0,8.335,0,7.516l0,0c0-0.82,0.665-1.484,1.484-1.484 h15.031C17.335,6.031,18,6.696,18,7.516L18,7.516z"/>
+          <path fill="#424242" d="M18,13.516C18,14.335,17.335,15,16.516,15H1.484C0.665,15,0,14.335,0,13.516l0,0 c0-0.82,0.665-1.484,1.484-1.484h15.031C17.335,12.031,18,12.696,18,13.516L18,13.516z"/>
+        </svg>
+      </a>
+
+      <div class="trigger">
+        {% assign sorted_pages = site.pages | sort: 'order' %}
+        {% for my_page in sorted_pages %}
+          {% if my_page.title %}
+          <a class="page-link" href="{{ my_page.url | prepend: site.baseurl }}">{{ my_page.title }}</a>
+          {% endif %}
+        {% endfor %}
+      </div>
+    </nav>
+
+  </div>
+
+</header>

_includes/icon-github.html

@@ -0,0 +1 @@
+<a href="https://github.com/{{ include.username }}"><span class="icon icon--github">{% include icon-github.svg %}</span><span class="username">{{ include.username }}</span></a>

_includes/icon-github.svg

@@ -0,0 +1 @@
+<svg viewBox="0 0 16 16"><path fill="#828282" d="M7.999,0.431c-4.285,0-7.76,3.474-7.76,7.761 c0,3.428,2.223,6.337,5.307,7.363c0.388,0.071,0.53-0.168,0.53-0.374c0-0.184-0.007-0.672-0.01-1.32 c-2.159,0.469-2.614-1.04-2.614-1.04c-0.353-0.896-0.862-1.135-0.862-1.135c-0.705-0.481,0.053-0.472,0.053-0.472 c0.779,0.055,1.189,0.8,1.189,0.8c0.692,1.186,1.816,0.843,2.258,0.645c0.071-0.502,0.271-0.843,0.493-1.037 C4.86,11.425,3.049,10.76,3.049,7.786c0-0.847,0.302-1.54,0.799-2.082C3.768,5.507,3.501,4.718,3.924,3.65 c0,0,0.652-0.209,2.134,0.796C6.677,4.273,7.34,4.187,8,4.184c0.659,0.003,1.323,0.089,1.943,0.261 c1.482-1.004,2.132-0.796,2.132-0.796c0.423,1.068,0.157,1.857,0.077,2.054c0.497,0.542,0.798,1.235,0.798,2.082 c0,2.981-1.814,3.637-3.543,3.829c0.279,0.24,0.527,0.713,0.527,1.437c0,1.037-0.01,1.874-0.01,2.129 c0,0.208,0.14,0.449,0.534,0.373c3.081-1.028,5.302-3.935,5.302-7.362C15.76,3.906,12.285,0.431,7.999,0.431z"/></svg>

_includes/icon-twitter.html

@@ -0,0 +1 @@
+<a href="https://twitter.com/{{ include.username }}"><span class="icon icon--twitter">{% include icon-twitter.svg %}</span><span class="username">{{ include.username }}</span></a>

_includes/icon-twitter.svg

@@ -0,0 +1 @@
+<svg viewBox="0 0 16 16"><path fill="#828282" d="M15.969,3.058c-0.586,0.26-1.217,0.436-1.878,0.515c0.675-0.405,1.194-1.045,1.438-1.809c-0.632,0.375-1.332,0.647-2.076,0.793c-0.596-0.636-1.446-1.033-2.387-1.033c-1.806,0-3.27,1.464-3.27,3.27 c0,0.256,0.029,0.506,0.085,0.745C5.163,5.404,2.753,4.102,1.14,2.124C0.859,2.607,0.698,3.168,0.698,3.767 c0,1.134,0.577,2.135,1.455,2.722C1.616,6.472,1.112,6.325,0.671,6.08c0,0.014,0,0.027,0,0.041c0,1.584,1.127,2.906,2.623,3.206 C3.02,9.402,2.731,9.442,2.433,9.442c-0.211,0-0.416-0.021-0.615-0.059c0.416,1.299,1.624,2.245,3.055,2.271 c-1.119,0.877-2.529,1.4-4.061,1.4c-0.264,0-0.524-0.015-0.78-0.046c1.447,0.928,3.166,1.469,5.013,1.469 c6.015,0,9.304-4.983,9.304-9.304c0-0.142-0.003-0.283-0.009-0.423C14.976,4.29,15.531,3.714,15.969,3.058z"/></svg>

_layouts/default.html

@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+
+  {% include head.html %}
+
+  <body>
+
+    {% include header.html %}
+
+    <div class="page-content">
+      <div class="wrapper">
+        {{ content }}
+      </div>
+    </div>
+
+    {% include footer.html %}
+
+  </body>
+
+</html>

_layouts/page.html

@@ -0,0 +1,14 @@
+---
+layout: default
+---
+<article class="post">
+
+  <header class="post-header">
+    <h1 class="post-title">{{ page.title }}</h1>
+  </header>
+
+  <div class="post-content">
+    {{ content }}
+  </div>
+
+</article>

_layouts/post.html

@@ -0,0 +1,15 @@
+---
+layout: default
+---
+<article class="post" itemscope itemtype="http://schema.org/BlogPosting">
+
+  <header class="post-header">
+    <h1 class="post-title" itemprop="name headline">{{ page.title }}</h1>
+    <p class="post-meta"><time datetime="{{ page.date | date_to_xmlschema }}" itemprop="datePublished">{{ page.date | date: "%b %-d, %Y" }}</time>{% if page.author %} • <span itemprop="author" itemscope itemtype="http://schema.org/Person"><span itemprop="name">{{ page.author }}</span></span>{% endif %}</p>
+  </header>
+
+  <div class="post-content" itemprop="articleBody">
+    {{ content }}
+  </div>
+
+</article>

_sass/_base.scss

@@ -0,0 +1,212 @@
+/**
+ * Reset some basic elements
+ */
+body, h1, h2, h3, h4, h5, h6,
+p, blockquote, pre, hr,
+dl, dd, ol, ul, figure {
+    margin: 0;
+    padding: 0;
+}
+
+
+
+/**
+ * Basic styling
+ */
+body {
+    font: $base-font-weight #{$base-font-size}/#{$base-line-height} $base-font-family;
+    color: $text-color;
+    background-color: $background-color;
+    -webkit-text-size-adjust: 100%;
+    -webkit-font-feature-settings: "kern" 1;
+    -moz-font-feature-settings: "kern" 1;
+    -o-font-feature-settings: "kern" 1;
+    font-feature-settings: "kern" 1;
+    font-kerning: normal;
+}
+
+
+
+/**
+ * Set `margin-bottom` to maintain vertical rhythm
+ */
+h1, h2, h3, h4, h5, h6,
+p, blockquote, pre,
+ul, ol, dl, figure,
+%vertical-rhythm {
+    margin-bottom: $spacing-unit / 2;
+}
+
+
+
+/**
+ * Images
+ */
+img {
+    max-width: 100%;
+    vertical-align: middle;
+}
+
+
+
+/**
+ * Figures
+ */
+figure > img {
+    display: block;
+}
+
+figcaption {
+    font-size: $small-font-size;
+}
+
+
+
+/**
+ * Lists
+ */
+ul, ol {
+    margin-left: $spacing-unit;
+}
+
+li {
+    > ul,
+    > ol {
+         margin-bottom: 0;
+    }
+}
+
+
+
+/**
+ * Headings
+ */
+h1, h2, h3, h4, h5, h6 {
+    font-weight: $base-font-weight;
+}
+
+
+
+/**
+ * Links
+ */
+a {
+    color: $brand-color;
+    text-decoration: none;
+
+    &:visited {
+        color: darken($brand-color, 15%);
+    }
+
+    &:hover {
+        color: $text-color;
+        text-decoration: underline;
+    }
+}
+
+
+
+/**
+ * Blockquotes
+ */
+blockquote {
+    color: $grey-color;
+    border-left: 4px solid $grey-color-light;
+    padding-left: $spacing-unit / 2;
+    font-size: 18px;
+    letter-spacing: -1px;
+    font-style: italic;
+
+    > :last-child {
+        margin-bottom: 0;
+    }
+}
+
+.info {
+    color: $text-color;
+    background-color: $blue-color-light;
+    border-left: 4px solid $blue-color;
+}
+
+
+
+/**
+ * Code formatting
+ */
+pre,
+code {
+    font-size: 15px;
+    border: 1px solid $grey-color-light;
+    border-radius: 3px;
+    background-color: #eef;
+}
+
+code {
+    padding: 1px 5px;
+}
+
+pre {
+    padding: 8px 12px;
+    overflow-x: auto;
+
+    > code {
+        border: 0;
+        padding-right: 0;
+        padding-left: 0;
+    }
+}
+
+
+
+/**
+ * Wrapper
+ */
+.wrapper {
+    max-width: -webkit-calc(#{$content-width} - (#{$spacing-unit} * 2));
+    max-width:         calc(#{$content-width} - (#{$spacing-unit} * 2));
+    margin-right: auto;
+    margin-left: auto;
+    padding-right: $spacing-unit;
+    padding-left: $spacing-unit;
+    @extend %clearfix;
+
+    @include media-query($on-laptop) {
+        max-width: -webkit-calc(#{$content-width} - (#{$spacing-unit}));
+        max-width:         calc(#{$content-width} - (#{$spacing-unit}));
+        padding-right: $spacing-unit / 2;
+        padding-left: $spacing-unit / 2;
+    }
+}
+
+
+
+/**
+ * Clearfix
+ */
+%clearfix {
+
+    &:after {
+        content: "";
+        display: table;
+        clear: both;
+    }
+}
+
+
+
+/**
+ * Icons
+ */
+.icon {
+
+    > svg {
+        display: inline-block;
+        width: 16px;
+        height: 16px;
+        vertical-align: middle;
+
+        path {
+            fill: $grey-color;
+        }
+    }
+}

_sass/_layout.scss

@@ -0,0 +1,242 @@
+/**
+ * Site header
+ */
+.site-header {
+    border-top: 5px solid $grey-color-dark;
+    border-bottom: 1px solid $grey-color-light;
+    min-height: 56px;
+
+    // Positioning context for the mobile navigation icon
+    position: relative;
+}
+
+.site-title {
+    font-size: 26px;
+    font-weight: 300;
+    line-height: 56px;
+    letter-spacing: -1px;
+    margin-bottom: 0;
+    float: left;
+
+    &,
+    &:visited {
+        color: $grey-color-dark;
+    }
+}
+
+.site-nav {
+    float: right;
+    line-height: 56px;
+
+    .menu-icon {
+        display: none;
+    }
+
+    .page-link {
+        color: $text-color;
+        line-height: $base-line-height;
+
+        // Gaps between nav items, but not on the last one
+        &:not(:last-child) {
+            margin-right: 20px;
+        }
+    }
+
+    @include media-query($on-palm) {
+        position: absolute;
+        top: 9px;
+        right: $spacing-unit / 2;
+        background-color: $background-color;
+        border: 1px solid $grey-color-light;
+        border-radius: 5px;
+        text-align: right;
+
+        .menu-icon {
+            display: block;
+            float: right;
+            width: 36px;
+            height: 26px;
+            line-height: 0;
+            padding-top: 10px;
+            text-align: center;
+
+            > svg {
+                width: 18px;
+                height: 15px;
+
+                path {
+                    fill: $grey-color-dark;
+                }
+            }
+        }
+
+        .trigger {
+            clear: both;
+            display: none;
+        }
+
+        &:hover .trigger {
+            display: block;
+            padding-bottom: 5px;
+        }
+
+        .page-link {
+            display: block;
+            padding: 5px 10px;
+
+            &:not(:last-child) {
+                margin-right: 0;
+            }
+            margin-left: 20px;
+        }
+    }
+}
+
+
+
+/**
+ * Site footer
+ */
+.site-footer {
+    border-top: 1px solid $grey-color-light;
+    padding: $spacing-unit 0;
+}
+
+.footer-heading {
+    font-size: 18px;
+    margin-bottom: $spacing-unit / 2;
+}
+
+.contact-list,
+.social-media-list {
+    list-style: none;
+    margin-left: 0;
+}
+
+.footer-col-wrapper {
+    font-size: 15px;
+    color: $grey-color;
+    margin-left: -$spacing-unit / 2;
+    @extend %clearfix;
+}
+
+.footer-col {
+    float: left;
+    margin-bottom: $spacing-unit / 2;
+    padding-left: $spacing-unit / 2;
+}
+
+.footer-col-1 {
+    width: -webkit-calc(35% - (#{$spacing-unit} / 2));
+    width:         calc(35% - (#{$spacing-unit} / 2));
+}
+
+.footer-col-2 {
+    width: -webkit-calc(20% - (#{$spacing-unit} / 2));
+    width:         calc(20% - (#{$spacing-unit} / 2));
+}
+
+.footer-col-3 {
+    width: -webkit-calc(45% - (#{$spacing-unit} / 2));
+    width:         calc(45% - (#{$spacing-unit} / 2));
+}
+
+@include media-query($on-laptop) {
+    .footer-col-1,
+    .footer-col-2 {
+        width: -webkit-calc(50% - (#{$spacing-unit} / 2));
+        width:         calc(50% - (#{$spacing-unit} / 2));
+    }
+
+    .footer-col-3 {
+        width: -webkit-calc(100% - (#{$spacing-unit} / 2));
+        width:         calc(100% - (#{$spacing-unit} / 2));
+    }
+}
+
+@include media-query($on-palm) {
+    .footer-col {
+        float: none;
+        width: -webkit-calc(100% - (#{$spacing-unit} / 2));
+        width:         calc(100% - (#{$spacing-unit} / 2));
+    }
+}
+
+
+
+/**
+ * Page content
+ */
+.page-content {
+    padding: $spacing-unit 0;
+}
+
+.page-heading {
+    font-size: 20px;
+}
+
+.post-list {
+    margin-left: 0;
+    list-style: none;
+
+    > li {
+        margin-bottom: $spacing-unit;
+    }
+}
+
+.post-meta {
+    font-size: $small-font-size;
+    color: $grey-color;
+}
+
+.post-link {
+    display: block;
+    font-size: 24px;
+}
+
+
+
+/**
+ * Posts
+ */
+.post-header {
+    margin-bottom: $spacing-unit;
+}
+
+.post-title {
+    font-size: 42px;
+    letter-spacing: -1px;
+    line-height: 1;
+
+    @include media-query($on-laptop) {
+        font-size: 36px;
+    }
+}
+
+.post-content {
+    margin-bottom: $spacing-unit;
+
+    h2 {
+        font-size: 32px;
+
+        @include media-query($on-laptop) {
+            font-size: 28px;
+        }
+    }
+
+    h3 {
+        font-size: 26px;
+
+        @include media-query($on-laptop) {
+            font-size: 22px;
+        }
+    }
+
+    h4 {
+        font-size: 20px;
+
+        @include media-query($on-laptop) {
+            font-size: 18px;
+        }
+    }
+}

_sass/_syntax-highlighting.scss

@@ -0,0 +1,71 @@
+/**
+ * Syntax highlighting styles
+ */
+.highlight {
+    background: #fff;
+    @extend %vertical-rhythm;
+
+    .highlighter-rouge & {
+      background: #eef;
+    }
+
+    .c     { color: #998; font-style: italic } // Comment
+    .err   { color: #a61717; background-color: #e3d2d2 } // Error
+    .k     { font-weight: bold } // Keyword
+    .o     { font-weight: bold } // Operator
+    .cm    { color: #998; font-style: italic } // Comment.Multiline
+    .cp    { color: #999; font-weight: bold } // Comment.Preproc
+    .c1    { color: #998; font-style: italic } // Comment.Single
+    .cs    { color: #999; font-weight: bold; font-style: italic } // Comment.Special
+    .gd    { color: #000; background-color: #fdd } // Generic.Deleted
+    .gd .x { color: #000; background-color: #faa } // Generic.Deleted.Specific
+    .ge    { font-style: italic } // Generic.Emph
+    .gr    { color: #a00 } // Generic.Error
+    .gh    { color: #999 } // Generic.Heading
+    .gi    { color: #000; background-color: #dfd } // Generic.Inserted
+    .gi .x { color: #000; background-color: #afa } // Generic.Inserted.Specific
+    .go    { color: #888 } // Generic.Output
+    .gp    { color: #555 } // Generic.Prompt
+    .gs    { font-weight: bold } // Generic.Strong
+    .gu    { color: #aaa } // Generic.Subheading
+    .gt    { color: #a00 } // Generic.Traceback
+    .kc    { font-weight: bold } // Keyword.Constant
+    .kd    { font-weight: bold } // Keyword.Declaration
+    .kp    { font-weight: bold } // Keyword.Pseudo
+    .kr    { font-weight: bold } // Keyword.Reserved
+    .kt    { color: #458; font-weight: bold } // Keyword.Type
+    .m     { color: #099 } // Literal.Number
+    .s     { color: #d14 } // Literal.String
+    .na    { color: #008080 } // Name.Attribute
+    .nb    { color: #0086B3 } // Name.Builtin
+    .nc    { color: #458; font-weight: bold } // Name.Class
+    .no    { color: #008080 } // Name.Constant
+    .ni    { color: #800080 } // Name.Entity
+    .ne    { color: #900; font-weight: bold } // Name.Exception
+    .nf    { color: #900; font-weight: bold } // Name.Function
+    .nn    { color: #555 } // Name.Namespace
+    .nt    { color: #000080 } // Name.Tag
+    .nv    { color: #008080 } // Name.Variable
+    .ow    { font-weight: bold } // Operator.Word
+    .w     { color: #bbb } // Text.Whitespace
+    .mf    { color: #099 } // Literal.Number.Float
+    .mh    { color: #099 } // Literal.Number.Hex
+    .mi    { color: #099 } // Literal.Number.Integer
+    .mo    { color: #099 } // Literal.Number.Oct
+    .sb    { color: #d14 } // Literal.String.Backtick
+    .sc    { color: #d14 } // Literal.String.Char
+    .sd    { color: #d14 } // Literal.String.Doc
+    .s2    { color: #d14 } // Literal.String.Double
+    .se    { color: #d14 } // Literal.String.Escape
+    .sh    { color: #d14 } // Literal.String.Heredoc
+    .si    { color: #d14 } // Literal.String.Interpol
+    .sx    { color: #d14 } // Literal.String.Other
+    .sr    { color: #009926 } // Literal.String.Regex
+    .s1    { color: #d14 } // Literal.String.Single
+    .ss    { color: #990073 } // Literal.String.Symbol
+    .bp    { color: #999 } // Name.Builtin.Pseudo
+    .vc    { color: #008080 } // Name.Variable.Class
+    .vg    { color: #008080 } // Name.Variable.Global
+    .vi    { color: #008080 } // Name.Variable.Instance
+    .il    { color: #099 } // Literal.Number.Integer.Long
+}

about.md

@@ -0,0 +1,12 @@
+---
+layout: page
+title: About
+permalink: /about/
+order: 1000
+---
+
+Jabit is a Bitmessage library for Java. It aims to be easy to use, so you can create great Bitmessage apps.
+
+You can find the source code for the Jabit at:
+{% include icon-github.html username="Dissem" %} /
+[Jabit](https://github.com/Dissem/Jabit)

api.md

@@ -0,0 +1,35 @@
+---
+layout: page
+title:  "API"
+permalink: "/api"
+order: 200
+categories: api
+---
+> See [Jabit's JavaDoc](http://www.javadoc.io/doc/ch.dissem.jabit/jabit-core/1.0.1) for a detailed documentation of all classes and methods. Feel free to either open an issue or create a pull request if you find something to be unclear or incorrect.
+{: .info}
+
+# Context Setup
+The `BitmessageContext` provides all methods a usual Bitmessage client needs. Note that all its methods should be thread safe, but you'll need to check your `BitmessageContext.Listener` for thread safety. The listener may even be called simultaneously from different threads.
+
+To keep the library small, flexible and independent from (but compatible to) heavy-duty frameworks such as Spring, the `BitmessageContext` needs to be initialized with all its dependencies.
+
+# Creating Identities
+
+{% highlight java %}
+BitmessageAddress identity = ctx.createIdentity(false, Pubkey.Feature.DOES_ACK);
+{% endhighlight %}
+
+If _shorter_ is enabled, Jabit searches a private key that yields a slightly shorter address. This is not optimized and may take a long time to complete.
+
+# Importing Identities
+Identities can be imported from PyBitmessages keys.dat by using the WifImporter from the library `jabit-wif`. The constructor needs a `BitmessageContext` and either a file, a string representation of a keys.dat or an input stream. The importer will throw an exception if the data can't be parsed.
+
+Once constructed you can choose to list the contained identities, import all, a subset or a specific identity into the given `BitmessageContext`.
+
+# Exporting Identities
+Exports work very similar to imports. A `WifExporter` also needs a `BitmessageContext` to construct. You then can add either all or specific identities to the importer. Id you provide specific identities, make sure they have a private key. They will not be reloaded.
+
+If you're done adding identities, call one of the `write` methods to save the exported identities, or `toString()` for the string representation.
+
+# Threads
+> TODO

build.gradle

@@ -1,82 +0,0 @@
-subprojects {
-    apply plugin: 'java'
-    apply plugin: 'maven'
-    apply plugin: 'signing'
-
-    sourceCompatibility = 1.7
-    group = 'ch.dissem.jabit'
-    version = '1.0.1'
-
-    ext.isReleaseVersion = !version.endsWith("SNAPSHOT")
-
-    repositories {
-        mavenCentral()
-    }
-
-    test {
-        testLogging {
-            exceptionFormat = 'full'
-        }
-    }
-
-    task javadocJar(type: Jar) {
-        classifier = 'javadoc'
-        from javadoc
-    }
-
-    task sourcesJar(type: Jar) {
-        classifier = 'sources'
-        from sourceSets.main.allSource
-    }
-
-    artifacts {
-        archives javadocJar, sourcesJar
-    }
-
-    signing {
-        required { isReleaseVersion && project.getProperties().get("signing.keyId")?.length() > 0 }
-        sign configurations.archives
-    }
-
-    uploadArchives {
-        repositories {
-            mavenDeployer {
-                beforeDeployment { MavenDeployment deployment -> signing.signPom(deployment) }
-
-                repository(url: "https://oss.sonatype.org/service/local/staging/deploy/maven2/") {
-                    authentication(userName: ossrhUsername, password: ossrhPassword)
-                }
-
-                snapshotRepository(url: "https://oss.sonatype.org/content/repositories/snapshots/") {
-                    authentication(userName: ossrhUsername, password: ossrhPassword)
-                }
-
-                pom.project {
-                    name 'Jabit'
-                    packaging 'jar'
-                    url 'https://github.com/Dissem/Jabit'
-
-                    scm {
-                        connection 'scm:git:https://github.com/Dissem/Jabit.git'
-                        developerConnection 'scm:git:git@github.com:Dissem/Jabit.git'
-                        url 'https://github.com/Dissem/Jabit.git'
-                    }
-
-                    licenses {
-                        license {
-                            name 'The Apache License, Version 2.0'
-                            url 'http://www.apache.org/licenses/LICENSE-2.0.txt'
-                        }
-                    }
-
-                    developers {
-                        developer {
-                            name 'Christian Basler'
-                            email 'chrigu.meyer@gmail.com'
-                        }
-                    }
-                }
-            }
-        }
-    }
-}

core/build.gradle

@@ -1,31 +0,0 @@
-uploadArchives {
-    repositories {
-        mavenDeployer {
-            pom.project {
-                name 'Jabit Core'
-                artifactId = 'jabit-core'
-                description 'A Java implementation of the Bitmessage protocol. This is the core part. You\'ll either need the networking and repositories modules, too, or implement your own.'
-            }
-        }
-    }
-}
-
-configurations {
-    testArtifacts.extendsFrom testRuntime
-}
-
-task testJar(type: Jar) {
-    classifier = 'test'
-    from sourceSets.test.output
-}
-
-artifacts {
-    testArtifacts testJar
-}
-
-dependencies {
-    compile 'org.slf4j:slf4j-api:1.7.12'
-    testCompile 'junit:junit:4.11'
-    testCompile 'org.mockito:mockito-core:1.10.19'
-    testCompile project(':cryptography-bc')
-}

core/src/main/java/ch/dissem/bitmessage/BitmessageContext.java

@@ -1,435 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage;
-
-import ch.dissem.bitmessage.entity.*;
-import ch.dissem.bitmessage.entity.payload.Broadcast;
-import ch.dissem.bitmessage.entity.payload.Msg;
-import ch.dissem.bitmessage.entity.payload.ObjectPayload;
-import ch.dissem.bitmessage.entity.payload.ObjectType;
-import ch.dissem.bitmessage.entity.payload.Pubkey.Feature;
-import ch.dissem.bitmessage.entity.valueobject.InventoryVector;
-import ch.dissem.bitmessage.entity.valueobject.Label;
-import ch.dissem.bitmessage.entity.valueobject.PrivateKey;
-import ch.dissem.bitmessage.exception.DecryptionFailedException;
-import ch.dissem.bitmessage.ports.*;
-import ch.dissem.bitmessage.utils.Property;
-import ch.dissem.bitmessage.utils.TTL;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import java.net.InetAddress;
-import java.util.Timer;
-import java.util.TimerTask;
-import java.util.concurrent.*;
-
-import static ch.dissem.bitmessage.entity.Plaintext.Status.*;
-import static ch.dissem.bitmessage.entity.Plaintext.Type.BROADCAST;
-import static ch.dissem.bitmessage.entity.Plaintext.Type.MSG;
-import static ch.dissem.bitmessage.utils.UnixTime.*;
-
-/**
- * <p>Use this class if you want to create a Bitmessage client.</p>
- * You'll need the Builder to create a BitmessageContext, and set the following properties:
- * <ul>
- * <li>addressRepo</li>
- * <li>inventory</li>
- * <li>nodeRegistry</li>
- * <li>networkHandler</li>
- * <li>messageRepo</li>
- * <li>streams</li>
- * </ul>
- * <p>The default implementations in the different module builds can be used.</p>
- * <p>The port defaults to 8444 (the default Bitmessage port)</p>
- */
-public class BitmessageContext {
-    public static final int CURRENT_VERSION = 3;
-    private final static Logger LOG = LoggerFactory.getLogger(BitmessageContext.class);
-
-    private final ExecutorService pool;
-
-    private final InternalContext ctx;
-
-    private final Listener listener;
-    private final NetworkHandler.MessageListener networkListener;
-
-    private final boolean sendPubkeyOnIdentityCreation;
-
-    private BitmessageContext(Builder builder) {
-        ctx = new InternalContext(builder);
-        listener = builder.listener;
-        networkListener = new DefaultMessageListener(ctx, listener);
-
-        // As this thread is used for parts that do POW, which itself uses parallel threads, only
-        // one should be executed at any time.
-        pool = Executors.newFixedThreadPool(1);
-
-        sendPubkeyOnIdentityCreation = builder.sendPubkeyOnIdentityCreation;
-
-        new Timer().schedule(new TimerTask() {
-            @Override
-            public void run() {
-                ctx.getProofOfWorkService().doMissingProofOfWork();
-            }
-        }, 30_000); // After 30 seconds
-    }
-
-    public AddressRepository addresses() {
-        return ctx.getAddressRepository();
-    }
-
-    public MessageRepository messages() {
-        return ctx.getMessageRepository();
-    }
-
-    public BitmessageAddress createIdentity(boolean shorter, Feature... features) {
-        final BitmessageAddress identity = new BitmessageAddress(new PrivateKey(
-                shorter,
-                ctx.getStreams()[0],
-                ctx.getNetworkNonceTrialsPerByte(),
-                ctx.getNetworkExtraBytes(),
-                features
-        ));
-        ctx.getAddressRepository().save(identity);
-        if (sendPubkeyOnIdentityCreation) {
-            pool.submit(new Runnable() {
-                @Override
-                public void run() {
-                    ctx.sendPubkey(identity, identity.getStream());
-                }
-            });
-        }
-        return identity;
-    }
-
-    public void addDistributedMailingList(String address, String alias) {
-        // TODO
-        throw new RuntimeException("not implemented");
-    }
-
-    public void broadcast(final BitmessageAddress from, final String subject, final String message) {
-        Plaintext msg = new Plaintext.Builder(BROADCAST)
-                .from(from)
-                .message(subject, message)
-                .build();
-        send(msg);
-    }
-
-    public void send(final BitmessageAddress from, final BitmessageAddress to, final String subject, final String message) {
-        if (from.getPrivateKey() == null) {
-            throw new IllegalArgumentException("'From' must be an identity, i.e. have a private key.");
-        }
-        Plaintext msg = new Plaintext.Builder(MSG)
-                .from(from)
-                .to(to)
-                .message(subject, message)
-                .labels(messages().getLabels(Label.Type.SENT))
-                .build();
-        send(msg);
-    }
-
-    public void send(final Plaintext msg) {
-        if (msg.getFrom() == null || msg.getFrom().getPrivateKey() == null) {
-            throw new IllegalArgumentException("'From' must be an identity, i.e. have a private key.");
-        }
-        pool.submit(new Runnable() {
-            @Override
-            public void run() {
-                BitmessageAddress to = msg.getTo();
-                if (to != null) {
-                    if (to.getPubkey() == null) {
-                        LOG.info("Public key is missing from recipient. Requesting.");
-                        ctx.requestPubkey(to);
-                    }
-                    if (to.getPubkey() == null) {
-                        msg.setStatus(PUBKEY_REQUESTED);
-                        msg.addLabels(ctx.getMessageRepository().getLabels(Label.Type.OUTBOX));
-                        ctx.getMessageRepository().save(msg);
-                    }
-                }
-                if (to == null || to.getPubkey() != null) {
-                    LOG.info("Sending message.");
-                    msg.setStatus(DOING_PROOF_OF_WORK);
-                    ctx.getMessageRepository().save(msg);
-                    ctx.send(
-                            msg.getFrom(),
-                            to,
-                            new Msg(msg),
-                            TTL.msg()
-                    );
-                    msg.setStatus(SENT);
-                    msg.addLabels(ctx.getMessageRepository().getLabels(Label.Type.SENT));
-                    ctx.getMessageRepository().save(msg);
-                }
-            }
-        });
-    }
-
-    public void startup() {
-        ctx.getNetworkHandler().start(networkListener);
-    }
-
-    public void shutdown() {
-        ctx.getNetworkHandler().stop();
-    }
-
-    /**
-     * @param host             a trusted node that must be reliable (it's used for every synchronization)
-     * @param port             of the trusted host, default is 8444
-     * @param timeoutInSeconds synchronization should end no later than about 5 seconds after the timeout elapsed, even
-     *                         if not all objects were fetched
-     * @param wait             waits for the synchronization thread to finish
-     */
-    public void synchronize(InetAddress host, int port, long timeoutInSeconds, boolean wait) {
-        Future<?> future = ctx.getNetworkHandler().synchronize(host, port, networkListener, timeoutInSeconds);
-        if (wait) {
-            try {
-                future.get();
-            } catch (InterruptedException e) {
-                LOG.info("Thread was interrupted. Trying to shut down synchronization and returning.");
-                future.cancel(true);
-            } catch (CancellationException | ExecutionException e) {
-                LOG.debug(e.getMessage(), e);
-            }
-        }
-    }
-
-    /**
-     * Send a custom message to a specific node (that should implement handling for this message type) and returns
-     * the response, which in turn is expected to be a {@link CustomMessage}.
-     *
-     * @param server  the node's address
-     * @param port    the node's port
-     * @param request the request
-     * @return the response
-     */
-    public CustomMessage send(InetAddress server, int port, CustomMessage request) {
-        return ctx.getNetworkHandler().send(server, port, request);
-    }
-
-    public void cleanup() {
-        ctx.getInventory().cleanup();
-    }
-
-    public boolean isRunning() {
-        return ctx.getNetworkHandler().isRunning();
-    }
-
-    public void addContact(BitmessageAddress contact) {
-        ctx.getAddressRepository().save(contact);
-        if (contact.getPubkey() == null) {
-            ctx.requestPubkey(contact);
-        }
-    }
-
-    public void addSubscribtion(BitmessageAddress address) {
-        address.setSubscribed(true);
-        ctx.getAddressRepository().save(address);
-        tryToFindBroadcastsForAddress(address);
-    }
-
-    private void tryToFindBroadcastsForAddress(BitmessageAddress address) {
-        for (ObjectMessage object : ctx.getInventory().getObjects(address.getStream(), Broadcast.getVersion(address), ObjectType.BROADCAST)) {
-            try {
-                Broadcast broadcast = (Broadcast) object.getPayload();
-                broadcast.decrypt(address);
-                listener.receive(broadcast.getPlaintext());
-            } catch (DecryptionFailedException ignore) {
-            } catch (Exception e) {
-                LOG.debug(e.getMessage(), e);
-            }
-        }
-    }
-
-    public Property status() {
-        return new Property("status", null,
-                ctx.getNetworkHandler().getNetworkStatus()
-        );
-    }
-
-    /**
-     * Returns the {@link InternalContext} - normally you wouldn't need it,
-     * unless you are doing something crazy with the protocol.
-     */
-    public InternalContext internals() {
-        return ctx;
-    }
-
-    public interface Listener {
-        void receive(Plaintext plaintext);
-    }
-
-    public static final class Builder {
-        int port = 8444;
-        Inventory inventory;
-        NodeRegistry nodeRegistry;
-        NetworkHandler networkHandler;
-        AddressRepository addressRepo;
-        MessageRepository messageRepo;
-        ProofOfWorkRepository proofOfWorkRepository;
-        ProofOfWorkEngine proofOfWorkEngine;
-        Cryptography cryptography;
-        MessageCallback messageCallback;
-        CustomCommandHandler customCommandHandler;
-        Listener listener;
-        int connectionLimit = 150;
-        long connectionTTL = 30 * MINUTE;
-        boolean sendPubkeyOnIdentityCreation = true;
-
-        public Builder() {
-        }
-
-        public Builder port(int port) {
-            this.port = port;
-            return this;
-        }
-
-        public Builder inventory(Inventory inventory) {
-            this.inventory = inventory;
-            return this;
-        }
-
-        public Builder nodeRegistry(NodeRegistry nodeRegistry) {
-            this.nodeRegistry = nodeRegistry;
-            return this;
-        }
-
-        public Builder networkHandler(NetworkHandler networkHandler) {
-            this.networkHandler = networkHandler;
-            return this;
-        }
-
-        public Builder addressRepo(AddressRepository addressRepo) {
-            this.addressRepo = addressRepo;
-            return this;
-        }
-
-        public Builder messageRepo(MessageRepository messageRepo) {
-            this.messageRepo = messageRepo;
-            return this;
-        }
-
-        public Builder powRepo(ProofOfWorkRepository proofOfWorkRepository) {
-            this.proofOfWorkRepository = proofOfWorkRepository;
-            return this;
-        }
-
-        public Builder cryptography(Cryptography cryptography) {
-            this.cryptography = cryptography;
-            return this;
-        }
-
-        public Builder messageCallback(MessageCallback callback) {
-            this.messageCallback = callback;
-            return this;
-        }
-
-        public Builder customCommandHandler(CustomCommandHandler handler) {
-            this.customCommandHandler = handler;
-            return this;
-        }
-
-        public Builder proofOfWorkEngine(ProofOfWorkEngine proofOfWorkEngine) {
-            this.proofOfWorkEngine = proofOfWorkEngine;
-            return this;
-        }
-
-        public Builder listener(Listener listener) {
-            this.listener = listener;
-            return this;
-        }
-
-        public Builder connectionLimit(int connectionLimit) {
-            this.connectionLimit = connectionLimit;
-            return this;
-        }
-
-        public Builder connectionTTL(int hours) {
-            this.connectionTTL = hours * HOUR;
-            return this;
-        }
-
-        /**
-         * By default a client will send the public key when an identity is being created. On weaker devices
-         * this behaviour might not be desirable.
-         */
-        public Builder doNotSendPubkeyOnIdentityCreation() {
-            this.sendPubkeyOnIdentityCreation = false;
-            return this;
-        }
-
-        /**
-         * Time to live in seconds for public keys the client sends. Defaults to the maximum of 28 days,
-         * but on weak devices smaller values might be desirable.
-         * <p>
-         * Please be aware that this might cause some problems where you can't receive a message (the
-         * sender can't receive your public key) in some special situations. Also note that it's probably
-         * not a good idea to set it too low.
-         * </p>
-         */
-        public Builder pubkeyTTL(long days) {
-            if (days < 0 || days > 28 * DAY) throw new IllegalArgumentException("TTL must be between 1 and 28 days");
-            TTL.pubkey(days);
-            return this;
-        }
-
-        public BitmessageContext build() {
-            nonNull("inventory", inventory);
-            nonNull("nodeRegistry", nodeRegistry);
-            nonNull("networkHandler", networkHandler);
-            nonNull("addressRepo", addressRepo);
-            nonNull("messageRepo", messageRepo);
-            nonNull("proofOfWorkRepo", proofOfWorkRepository);
-            if (proofOfWorkEngine == null) {
-                proofOfWorkEngine = new MultiThreadedPOWEngine();
-            }
-            if (messageCallback == null) {
-                messageCallback = new MessageCallback() {
-                    @Override
-                    public void proofOfWorkStarted(ObjectPayload message) {
-                    }
-
-                    @Override
-                    public void proofOfWorkCompleted(ObjectPayload message) {
-                    }
-
-                    @Override
-                    public void messageOffered(ObjectPayload message, InventoryVector iv) {
-                    }
-
-                    @Override
-                    public void messageAcknowledged(InventoryVector iv) {
-                    }
-                };
-            }
-            if (customCommandHandler == null) {
-                customCommandHandler = new CustomCommandHandler() {
-                    @Override
-                    public MessagePayload handle(CustomMessage request) {
-                        throw new RuntimeException("Received custom request, but no custom command handler configured.");
-                    }
-                };
-            }
-            return new BitmessageContext(this);
-        }
-
-        private void nonNull(String name, Object o) {
-            if (o == null) throw new IllegalStateException(name + " must not be null");
-        }
-    }
-
-}

core/src/main/java/ch/dissem/bitmessage/DefaultMessageListener.java

@@ -1,162 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage;
-
-import ch.dissem.bitmessage.entity.BitmessageAddress;
-import ch.dissem.bitmessage.entity.ObjectMessage;
-import ch.dissem.bitmessage.entity.Plaintext;
-import ch.dissem.bitmessage.entity.payload.*;
-import ch.dissem.bitmessage.entity.valueobject.Label;
-import ch.dissem.bitmessage.exception.DecryptionFailedException;
-import ch.dissem.bitmessage.ports.NetworkHandler;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import java.io.IOException;
-import java.util.Arrays;
-import java.util.List;
-
-import static ch.dissem.bitmessage.entity.Plaintext.Status.*;
-import static ch.dissem.bitmessage.utils.UnixTime.DAY;
-
-class DefaultMessageListener implements NetworkHandler.MessageListener {
-    private final static Logger LOG = LoggerFactory.getLogger(DefaultMessageListener.class);
-    private final InternalContext ctx;
-    private final BitmessageContext.Listener listener;
-
-    public DefaultMessageListener(InternalContext context, BitmessageContext.Listener listener) {
-        this.ctx = context;
-        this.listener = listener;
-    }
-
-    @Override
-    public void receive(ObjectMessage object) throws IOException {
-        ObjectPayload payload = object.getPayload();
-        if (payload.getType() == null) return;
-
-        switch (payload.getType()) {
-            case GET_PUBKEY: {
-                receive(object, (GetPubkey) payload);
-                break;
-            }
-            case PUBKEY: {
-                receive(object, (Pubkey) payload);
-                break;
-            }
-            case MSG: {
-                receive(object, (Msg) payload);
-                break;
-            }
-            case BROADCAST: {
-                receive(object, (Broadcast) payload);
-                break;
-            }
-        }
-    }
-
-    protected void receive(ObjectMessage object, GetPubkey getPubkey) {
-        BitmessageAddress identity = ctx.getAddressRepository().findIdentity(getPubkey.getRipeTag());
-        if (identity != null && identity.getPrivateKey() != null) {
-            LOG.info("Got pubkey request for identity " + identity);
-            // FIXME: only send pubkey if it wasn't sent in the last 28 days
-            ctx.sendPubkey(identity, object.getStream());
-        }
-    }
-
-    protected void receive(ObjectMessage object, Pubkey pubkey) throws IOException {
-        BitmessageAddress address;
-        try {
-            if (pubkey instanceof V4Pubkey) {
-                V4Pubkey v4Pubkey = (V4Pubkey) pubkey;
-                address = ctx.getAddressRepository().findContact(v4Pubkey.getTag());
-                if (address != null) {
-                    v4Pubkey.decrypt(address.getPublicDecryptionKey());
-                }
-            } else {
-                address = ctx.getAddressRepository().findContact(pubkey.getRipe());
-            }
-            if (address != null) {
-                updatePubkey(address, pubkey);
-            }
-        } catch (DecryptionFailedException ignore) {
-        }
-    }
-
-    private void updatePubkey(BitmessageAddress address, Pubkey pubkey){
-        address.setPubkey(pubkey);
-        LOG.info("Got pubkey for contact " + address);
-        ctx.getAddressRepository().save(address);
-        List<Plaintext> messages = ctx.getMessageRepository().findMessages(Plaintext.Status.PUBKEY_REQUESTED, address);
-        LOG.info("Sending " + messages.size() + " messages for contact " + address);
-        for (Plaintext msg : messages) {
-            msg.setStatus(DOING_PROOF_OF_WORK);
-            ctx.getMessageRepository().save(msg);
-            ctx.send(
-                    msg.getFrom(),
-                    msg.getTo(),
-                    new Msg(msg),
-                    +2 * DAY
-            );
-            msg.setStatus(SENT);
-            ctx.getMessageRepository().save(msg);
-        }
-    }
-
-    protected void receive(ObjectMessage object, Msg msg) throws IOException {
-        for (BitmessageAddress identity : ctx.getAddressRepository().getIdentities()) {
-            try {
-                msg.decrypt(identity.getPrivateKey().getPrivateEncryptionKey());
-                msg.getPlaintext().setTo(identity);
-                if (!object.isSignatureValid(msg.getPlaintext().getFrom().getPubkey())) {
-                    LOG.warn("Msg with IV " + object.getInventoryVector() + " was successfully decrypted, but signature check failed. Ignoring.");
-                } else {
-                    msg.getPlaintext().setStatus(RECEIVED);
-                    msg.getPlaintext().addLabels(ctx.getMessageRepository().getLabels(Label.Type.INBOX, Label.Type.UNREAD));
-                    msg.getPlaintext().setInventoryVector(object.getInventoryVector());
-                    ctx.getMessageRepository().save(msg.getPlaintext());
-                    listener.receive(msg.getPlaintext());
-                    updatePubkey(msg.getPlaintext().getFrom(), msg.getPlaintext().getFrom().getPubkey());
-                }
-                break;
-            } catch (DecryptionFailedException ignore) {
-            }
-        }
-    }
-
-    protected void receive(ObjectMessage object, Broadcast broadcast) throws IOException {
-        byte[] tag = broadcast instanceof V5Broadcast ? ((V5Broadcast) broadcast).getTag() : null;
-        for (BitmessageAddress subscription : ctx.getAddressRepository().getSubscriptions(broadcast.getVersion())) {
-            if (tag != null && !Arrays.equals(tag, subscription.getTag())) {
-                continue;
-            }
-            try {
-                broadcast.decrypt(subscription.getPublicDecryptionKey());
-                if (!object.isSignatureValid(broadcast.getPlaintext().getFrom().getPubkey())) {
-                    LOG.warn("Broadcast with IV " + object.getInventoryVector() + " was successfully decrypted, but signature check failed. Ignoring.");
-                } else {
-                    broadcast.getPlaintext().setStatus(RECEIVED);
-                    broadcast.getPlaintext().addLabels(ctx.getMessageRepository().getLabels(Label.Type.INBOX, Label.Type.BROADCAST, Label.Type.UNREAD));
-                    broadcast.getPlaintext().setInventoryVector(object.getInventoryVector());
-                    ctx.getMessageRepository().save(broadcast.getPlaintext());
-                    listener.receive(broadcast.getPlaintext());
-                    updatePubkey(broadcast.getPlaintext().getFrom(), broadcast.getPlaintext().getFrom().getPubkey());
-                }
-            } catch (DecryptionFailedException ignore) {
-            }
-        }
-    }
-}

core/src/main/java/ch/dissem/bitmessage/InternalContext.java

@@ -1,299 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage;
-
-import ch.dissem.bitmessage.entity.BitmessageAddress;
-import ch.dissem.bitmessage.entity.Encrypted;
-import ch.dissem.bitmessage.entity.ObjectMessage;
-import ch.dissem.bitmessage.entity.payload.*;
-import ch.dissem.bitmessage.ports.*;
-import ch.dissem.bitmessage.utils.Singleton;
-import ch.dissem.bitmessage.utils.TTL;
-import ch.dissem.bitmessage.utils.UnixTime;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import java.io.IOException;
-import java.util.Arrays;
-import java.util.TreeSet;
-
-/**
- * The internal context should normally only be used for port implementations. If you need it in your client
- * implementation, you're either doing something wrong, something very weird, or the BitmessageContext should
- * get extended.
- * <p>
- * On the other hand, if you need the BitmessageContext in a port implementation, the same thing might apply.
- * </p>
- */
-public class InternalContext {
-    private final static Logger LOG = LoggerFactory.getLogger(InternalContext.class);
-
-    private final Cryptography cryptography;
-    private final Inventory inventory;
-    private final NodeRegistry nodeRegistry;
-    private final NetworkHandler networkHandler;
-    private final AddressRepository addressRepository;
-    private final MessageRepository messageRepository;
-    private final ProofOfWorkRepository proofOfWorkRepository;
-    private final ProofOfWorkEngine proofOfWorkEngine;
-    private final MessageCallback messageCallback;
-    private final CustomCommandHandler customCommandHandler;
-    private final ProofOfWorkService proofOfWorkService;
-
-    private final TreeSet<Long> streams = new TreeSet<>();
-    private final int port;
-    private final long clientNonce;
-    private final long networkNonceTrialsPerByte = 1000;
-    private final long networkExtraBytes = 1000;
-    private long connectionTTL;
-    private int connectionLimit;
-
-    public InternalContext(BitmessageContext.Builder builder) {
-        this.cryptography = builder.cryptography;
-        this.inventory = builder.inventory;
-        this.nodeRegistry = builder.nodeRegistry;
-        this.networkHandler = builder.networkHandler;
-        this.addressRepository = builder.addressRepo;
-        this.messageRepository = builder.messageRepo;
-        this.proofOfWorkRepository = builder.proofOfWorkRepository;
-        this.proofOfWorkService = new ProofOfWorkService();
-        this.proofOfWorkEngine = builder.proofOfWorkEngine;
-        this.clientNonce = cryptography.randomNonce();
-        this.messageCallback = builder.messageCallback;
-        this.customCommandHandler = builder.customCommandHandler;
-        this.port = builder.port;
-        this.connectionLimit = builder.connectionLimit;
-        this.connectionTTL = builder.connectionTTL;
-
-        Singleton.initialize(cryptography);
-
-        // TODO: streams of new identities and subscriptions should also be added. This works only after a restart.
-        for (BitmessageAddress address : addressRepository.getIdentities()) {
-            streams.add(address.getStream());
-        }
-        for (BitmessageAddress address : addressRepository.getSubscriptions()) {
-            streams.add(address.getStream());
-        }
-        if (streams.isEmpty()) {
-            streams.add(1L);
-        }
-
-        init(cryptography, inventory, nodeRegistry, networkHandler, addressRepository, messageRepository,
-                proofOfWorkRepository, proofOfWorkService, proofOfWorkEngine,
-                messageCallback, customCommandHandler);
-        for (BitmessageAddress identity : addressRepository.getIdentities()) {
-            streams.add(identity.getStream());
-        }
-    }
-
-    private void init(Object... objects) {
-        for (Object o : objects) {
-            if (o instanceof ContextHolder) {
-                ((ContextHolder) o).setContext(this);
-            }
-        }
-    }
-
-    public Cryptography getCryptography() {
-        return cryptography;
-    }
-
-    public Inventory getInventory() {
-        return inventory;
-    }
-
-    public NodeRegistry getNodeRegistry() {
-        return nodeRegistry;
-    }
-
-    public NetworkHandler getNetworkHandler() {
-        return networkHandler;
-    }
-
-    public AddressRepository getAddressRepository() {
-        return addressRepository;
-    }
-
-    public MessageRepository getMessageRepository() {
-        return messageRepository;
-    }
-
-    public ProofOfWorkRepository getProofOfWorkRepository() {
-        return proofOfWorkRepository;
-    }
-
-    public ProofOfWorkEngine getProofOfWorkEngine() {
-        return proofOfWorkEngine;
-    }
-
-    public ProofOfWorkService getProofOfWorkService() {
-        return proofOfWorkService;
-    }
-
-    public long[] getStreams() {
-        long[] result = new long[streams.size()];
-        int i = 0;
-        for (long stream : streams) {
-            result[i++] = stream;
-        }
-        return result;
-    }
-
-    public int getPort() {
-        return port;
-    }
-
-    public long getNetworkNonceTrialsPerByte() {
-        return networkNonceTrialsPerByte;
-    }
-
-    public long getNetworkExtraBytes() {
-        return networkExtraBytes;
-    }
-
-    public void send(final BitmessageAddress from, BitmessageAddress to, final ObjectPayload payload,
-                     final long timeToLive) {
-        try {
-            if (to == null) to = from;
-            long expires = UnixTime.now(+timeToLive);
-            LOG.info("Expires at " + expires);
-            final ObjectMessage object = new ObjectMessage.Builder()
-                    .stream(to.getStream())
-                    .expiresTime(expires)
-                    .payload(payload)
-                    .build();
-            if (object.isSigned()) {
-                object.sign(from.getPrivateKey());
-            }
-            if (payload instanceof Broadcast) {
-                ((Broadcast) payload).encrypt();
-            } else if (payload instanceof Encrypted) {
-                object.encrypt(to.getPubkey());
-            }
-            messageCallback.proofOfWorkStarted(payload);
-            proofOfWorkService.doProofOfWork(to, object);
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    public void sendPubkey(final BitmessageAddress identity, final long targetStream) {
-        try {
-            long expires = UnixTime.now(TTL.pubkey());
-            LOG.info("Expires at " + expires);
-            final ObjectMessage response = new ObjectMessage.Builder()
-                    .stream(targetStream)
-                    .expiresTime(expires)
-                    .payload(identity.getPubkey())
-                    .build();
-            response.sign(identity.getPrivateKey());
-            response.encrypt(cryptography.createPublicKey(identity.getPublicDecryptionKey()));
-            messageCallback.proofOfWorkStarted(identity.getPubkey());
-            // TODO: remember that the pubkey is just about to be sent, and on which stream!
-            proofOfWorkService.doProofOfWork(response);
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    /**
-     * Be aware that if the pubkey already exists in the inventory, the metods will not request it and the callback
-     * for freshly received pubkeys will not be called. Instead the pubkey is added to the contact and stored on DB.
-     */
-    public void requestPubkey(final BitmessageAddress contact) {
-        BitmessageAddress stored = addressRepository.getAddress(contact.getAddress());
-
-        tryToFindMatchingPubkey(contact);
-        if (contact.getPubkey() != null) {
-            if (stored != null) {
-                stored.setPubkey(contact.getPubkey());
-                addressRepository.save(stored);
-            } else {
-                addressRepository.save(contact);
-            }
-            return;
-        }
-
-        if (stored == null) {
-            addressRepository.save(contact);
-        }
-
-        long expires = UnixTime.now(TTL.getpubkey());
-        LOG.info("Expires at " + expires);
-        final ObjectMessage request = new ObjectMessage.Builder()
-                .stream(contact.getStream())
-                .expiresTime(expires)
-                .payload(new GetPubkey(contact))
-                .build();
-        messageCallback.proofOfWorkStarted(request.getPayload());
-        proofOfWorkService.doProofOfWork(request);
-    }
-
-    private void tryToFindMatchingPubkey(BitmessageAddress address) {
-        BitmessageAddress stored = addressRepository.getAddress(address.getAddress());
-        if (stored != null) {
-            address.setAlias(stored.getAlias());
-            address.setSubscribed(stored.isSubscribed());
-        }
-        for (ObjectMessage object : inventory.getObjects(address.getStream(), address.getVersion(), ObjectType.PUBKEY)) {
-            try {
-                Pubkey pubkey = (Pubkey) object.getPayload();
-                if (address.getVersion() == 4) {
-                    V4Pubkey v4Pubkey = (V4Pubkey) pubkey;
-                    if (Arrays.equals(address.getTag(), v4Pubkey.getTag())) {
-                        v4Pubkey.decrypt(address.getPublicDecryptionKey());
-                        if (object.isSignatureValid(v4Pubkey)) {
-                            address.setPubkey(v4Pubkey);
-                            addressRepository.save(address);
-                            break;
-                        } else {
-                            LOG.info("Found pubkey for " + address + " but signature is invalid");
-                        }
-                    }
-                } else {
-                    if (Arrays.equals(pubkey.getRipe(), address.getRipe())) {
-                        address.setPubkey(pubkey);
-                        addressRepository.save(address);
-                        break;
-                    }
-                }
-            } catch (Exception e) {
-                LOG.debug(e.getMessage(), e);
-            }
-        }
-    }
-
-    public long getClientNonce() {
-        return clientNonce;
-    }
-
-    public long getConnectionTTL() {
-        return connectionTTL;
-    }
-
-    public int getConnectionLimit() {
-        return connectionLimit;
-    }
-
-    public CustomCommandHandler getCustomCommandHandler() {
-        return customCommandHandler;
-    }
-
-    public interface ContextHolder {
-        void setContext(InternalContext context);
-    }
-}

core/src/main/java/ch/dissem/bitmessage/MessageCallback.java

@@ -1,52 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage;
-
-import ch.dissem.bitmessage.entity.payload.ObjectPayload;
-import ch.dissem.bitmessage.entity.valueobject.InventoryVector;
-
-/**
- * Callback for message sending events, mostly so the user can be notified when POW is done.
- */
-public interface MessageCallback {
-    /**
-     * Called before calculation of proof of work begins.
-     */
-    void proofOfWorkStarted(ObjectPayload message);
-
-    /**
-     * Called after calculation of proof of work finished.
-     */
-    void proofOfWorkCompleted(ObjectPayload message);
-
-    /**
-     * Called once the message is offered to the network. Please note that this doesn't mean the message was sent,
-     * if the client is not connected to the network it's just stored in the inventory.
-     * <p>
-     * Also, please note that this is where the original payload as well as the {@link InventoryVector} of the sent
-     * message is available. If the callback needs the IV for some reason, it should be retrieved here. (Plaintext
-     * and Broadcast messages will have their IV property set automatically though.)
-     * </p>
-     */
-    void messageOffered(ObjectPayload message, InventoryVector iv);
-
-    /**
-     * This isn't called yet, as ACK messages aren't being processed yet. Also, this is only relevant for Plaintext
-     * messages.
-     */
-    void messageAcknowledged(InventoryVector iv);
-}

core/src/main/java/ch/dissem/bitmessage/ProofOfWorkService.java

@@ -1,83 +0,0 @@
-package ch.dissem.bitmessage;
-
-import ch.dissem.bitmessage.entity.BitmessageAddress;
-import ch.dissem.bitmessage.entity.ObjectMessage;
-import ch.dissem.bitmessage.entity.Plaintext;
-import ch.dissem.bitmessage.entity.PlaintextHolder;
-import ch.dissem.bitmessage.entity.payload.Pubkey;
-import ch.dissem.bitmessage.ports.MessageRepository;
-import ch.dissem.bitmessage.ports.ProofOfWorkEngine;
-import ch.dissem.bitmessage.ports.ProofOfWorkRepository;
-import ch.dissem.bitmessage.ports.Cryptography;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import java.util.List;
-
-import static ch.dissem.bitmessage.utils.Singleton.security;
-
-/**
- * @author Christian Basler
- */
-public class ProofOfWorkService implements ProofOfWorkEngine.Callback, InternalContext.ContextHolder {
-    private final static Logger LOG = LoggerFactory.getLogger(ProofOfWorkService.class);
-
-    private Cryptography cryptography;
-    private InternalContext ctx;
-    private ProofOfWorkRepository powRepo;
-    private MessageRepository messageRepo;
-
-    public void doMissingProofOfWork() {
-        List<byte[]> items = powRepo.getItems();
-        if (items.isEmpty()) return;
-
-        LOG.info("Doing POW for " + items.size() + " tasks.");
-        for (byte[] initialHash : items) {
-            ProofOfWorkRepository.Item item = powRepo.getItem(initialHash);
-            cryptography.doProofOfWork(item.object, item.nonceTrialsPerByte, item.extraBytes, this);
-        }
-    }
-
-    public void doProofOfWork(ObjectMessage object) {
-        doProofOfWork(null, object);
-    }
-
-    public void doProofOfWork(BitmessageAddress recipient, ObjectMessage object) {
-        Pubkey pubkey = recipient == null ? null : recipient.getPubkey();
-
-        long nonceTrialsPerByte = pubkey == null ? ctx.getNetworkNonceTrialsPerByte() : pubkey.getNonceTrialsPerByte();
-        long extraBytes = pubkey == null ? ctx.getNetworkExtraBytes() : pubkey.getExtraBytes();
-
-        powRepo.putObject(object, nonceTrialsPerByte, extraBytes);
-        if (object.getPayload() instanceof PlaintextHolder) {
-            Plaintext plaintext = ((PlaintextHolder) object.getPayload()).getPlaintext();
-            plaintext.setInitialHash(cryptography.getInitialHash(object));
-            messageRepo.save(plaintext);
-        }
-        cryptography.doProofOfWork(object, nonceTrialsPerByte, extraBytes, this);
-    }
-
-    @Override
-    public void onNonceCalculated(byte[] initialHash, byte[] nonce) {
-        ObjectMessage object = powRepo.getItem(initialHash).object;
-        object.setNonce(nonce);
-//        messageCallback.proofOfWorkCompleted(payload);
-        Plaintext plaintext = messageRepo.getMessage(initialHash);
-        if (plaintext != null) {
-            plaintext.setInventoryVector(object.getInventoryVector());
-            messageRepo.save(plaintext);
-        }
-        ctx.getInventory().storeObject(object);
-        ctx.getProofOfWorkRepository().removeObject(initialHash);
-        ctx.getNetworkHandler().offer(object.getInventoryVector());
-//        messageCallback.messageOffered(payload, object.getInventoryVector());
-    }
-
-    @Override
-    public void setContext(InternalContext ctx) {
-        this.ctx = ctx;
-        this.cryptography = security();
-        this.powRepo = ctx.getProofOfWorkRepository();
-        this.messageRepo = ctx.getMessageRepository();
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/Addr.java

@@ -1,75 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity;
-
-import ch.dissem.bitmessage.entity.valueobject.NetworkAddress;
-import ch.dissem.bitmessage.utils.Encode;
-
-import java.io.IOException;
-import java.io.OutputStream;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.List;
-
-/**
- * The 'addr' command holds a list of known active Bitmessage nodes.
- */
-public class Addr implements MessagePayload {
-    private final List<NetworkAddress> addresses;
-
-    private Addr(Builder builder) {
-        addresses = builder.addresses;
-    }
-
-    @Override
-    public Command getCommand() {
-        return Command.ADDR;
-    }
-
-    public List<NetworkAddress> getAddresses() {
-        return addresses;
-    }
-
-    @Override
-    public void write(OutputStream stream) throws IOException {
-        Encode.varInt(addresses.size(), stream);
-        for (NetworkAddress address : addresses) {
-            address.write(stream);
-        }
-    }
-
-    public static final class Builder {
-        private List<NetworkAddress> addresses = new ArrayList<NetworkAddress>();
-
-        public Builder() {
-        }
-
-        public Builder addresses(Collection<NetworkAddress> addresses){
-            this.addresses.addAll(addresses);
-            return this;
-        }
-
-        public Builder addAddress(final NetworkAddress address) {
-            this.addresses.add(address);
-            return this;
-        }
-
-        public Addr build() {
-            return new Addr(this);
-        }
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/BitmessageAddress.java

@@ -1,223 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity;
-
-import ch.dissem.bitmessage.entity.payload.Pubkey;
-import ch.dissem.bitmessage.entity.payload.V4Pubkey;
-import ch.dissem.bitmessage.entity.valueobject.PrivateKey;
-import ch.dissem.bitmessage.utils.AccessCounter;
-import ch.dissem.bitmessage.utils.Base58;
-import ch.dissem.bitmessage.utils.Bytes;
-import ch.dissem.bitmessage.utils.Encode;
-
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.Serializable;
-import java.util.Arrays;
-import java.util.Objects;
-
-import static ch.dissem.bitmessage.utils.Decode.bytes;
-import static ch.dissem.bitmessage.utils.Decode.varInt;
-import static ch.dissem.bitmessage.utils.Singleton.security;
-
-/**
- * A Bitmessage address. Can be a user's private address, an address string without public keys or a recipient's address
- * holding private keys.
- */
-public class BitmessageAddress implements Serializable {
-    private final long version;
-    private final long stream;
-    private final byte[] ripe;
-    private final byte[] tag;
-    /**
-     * Used for V4 address encryption. It's easier to just create it regardless of address version.
-     */
-    private final byte[] publicDecryptionKey;
-
-    private String address;
-
-    private PrivateKey privateKey;
-    private Pubkey pubkey;
-
-    private String alias;
-    private boolean subscribed;
-
-    BitmessageAddress(long version, long stream, byte[] ripe) {
-        try {
-            this.version = version;
-            this.stream = stream;
-            this.ripe = ripe;
-
-            ByteArrayOutputStream os = new ByteArrayOutputStream();
-            Encode.varInt(version, os);
-            Encode.varInt(stream, os);
-            if (version < 4) {
-                byte[] checksum = security().sha512(os.toByteArray(), ripe);
-                this.tag = null;
-                this.publicDecryptionKey = Arrays.copyOfRange(checksum, 0, 32);
-            } else {
-                // for tag and decryption key, the checksum has to be created with 0x00 padding
-                byte[] checksum = security().doubleSha512(os.toByteArray(), ripe);
-                this.tag = Arrays.copyOfRange(checksum, 32, 64);
-                this.publicDecryptionKey = Arrays.copyOfRange(checksum, 0, 32);
-            }
-            // but for the address and its checksum they need to be stripped
-            int offset = Bytes.numberOfLeadingZeros(ripe);
-            os.write(ripe, offset, ripe.length - offset);
-            byte[] checksum = security().doubleSha512(os.toByteArray());
-            os.write(checksum, 0, 4);
-            this.address = "BM-" + Base58.encode(os.toByteArray());
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    public BitmessageAddress(Pubkey publicKey) {
-        this(publicKey.getVersion(), publicKey.getStream(), publicKey.getRipe());
-        this.pubkey = publicKey;
-    }
-
-    public BitmessageAddress(PrivateKey privateKey) {
-        this(privateKey.getPubkey());
-        this.privateKey = privateKey;
-    }
-
-    public BitmessageAddress(String address) {
-        try {
-            this.address = address;
-            byte[] bytes = Base58.decode(address.substring(3));
-            ByteArrayInputStream in = new ByteArrayInputStream(bytes);
-            AccessCounter counter = new AccessCounter();
-            this.version = varInt(in, counter);
-            this.stream = varInt(in, counter);
-            this.ripe = Bytes.expand(bytes(in, bytes.length - counter.length() - 4), 20);
-
-            // test checksum
-            byte[] checksum = security().doubleSha512(bytes, bytes.length - 4);
-            byte[] expectedChecksum = bytes(in, 4);
-            for (int i = 0; i < 4; i++) {
-                if (expectedChecksum[i] != checksum[i])
-                    throw new IllegalArgumentException("Checksum of address failed");
-            }
-            if (version < 4) {
-                checksum = security().sha512(Arrays.copyOfRange(bytes, 0, counter.length()), ripe);
-                this.tag = null;
-                this.publicDecryptionKey = Arrays.copyOfRange(checksum, 0, 32);
-            } else {
-                checksum = security().doubleSha512(Arrays.copyOfRange(bytes, 0, counter.length()), ripe);
-                this.tag = Arrays.copyOfRange(checksum, 32, 64);
-                this.publicDecryptionKey = Arrays.copyOfRange(checksum, 0, 32);
-            }
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    public static byte[] calculateTag(long version, long stream, byte[] ripe) {
-        try {
-            ByteArrayOutputStream out = new ByteArrayOutputStream();
-            Encode.varInt(version, out);
-            Encode.varInt(stream, out);
-            out.write(ripe);
-            return Arrays.copyOfRange(security().doubleSha512(out.toByteArray()), 32, 64);
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    public long getStream() {
-        return stream;
-    }
-
-    public long getVersion() {
-        return version;
-    }
-
-    public Pubkey getPubkey() {
-        return pubkey;
-    }
-
-    public void setPubkey(Pubkey pubkey) {
-        if (pubkey instanceof V4Pubkey) {
-            if (!Arrays.equals(tag, ((V4Pubkey) pubkey).getTag()))
-                throw new IllegalArgumentException("Pubkey has incompatible tag");
-        }
-        if (!Arrays.equals(ripe, pubkey.getRipe()))
-            throw new IllegalArgumentException("Pubkey has incompatible ripe");
-        this.pubkey = pubkey;
-    }
-
-    /**
-     * @return the private key used to decrypt Pubkey objects (for v4 addresses) and broadcasts.
-     */
-    public byte[] getPublicDecryptionKey() {
-        return publicDecryptionKey;
-    }
-
-    public PrivateKey getPrivateKey() {
-        return privateKey;
-    }
-
-    public String getAddress() {
-        return address;
-    }
-
-    public String getAlias() {
-        return alias;
-    }
-
-    public void setAlias(String alias) {
-        this.alias = alias;
-    }
-
-    @Override
-    public String toString() {
-        return alias != null ? alias : address;
-    }
-
-    public byte[] getRipe() {
-        return ripe;
-    }
-
-    public byte[] getTag() {
-        return tag;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-        BitmessageAddress address = (BitmessageAddress) o;
-        return Objects.equals(version, address.version) &&
-                Objects.equals(stream, address.stream) &&
-                Arrays.equals(ripe, address.ripe);
-    }
-
-    @Override
-    public int hashCode() {
-        return Arrays.hashCode(ripe);
-    }
-
-    public boolean isSubscribed() {
-        return subscribed;
-    }
-
-    public void setSubscribed(boolean subscribed) {
-        this.subscribed = subscribed;
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/CustomMessage.java

@@ -1,96 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity;
-
-import ch.dissem.bitmessage.utils.AccessCounter;
-import ch.dissem.bitmessage.utils.Encode;
-
-import java.io.*;
-
-import static ch.dissem.bitmessage.utils.Decode.bytes;
-import static ch.dissem.bitmessage.utils.Decode.varString;
-
-/**
- * @author Christian Basler
- */
-public class CustomMessage implements MessagePayload {
-    public static final String COMMAND_ERROR = "ERROR";
-
-    private final String command;
-    private final byte[] data;
-
-    public CustomMessage(String command) {
-        this.command = command;
-        this.data = null;
-    }
-
-    public CustomMessage(String command, byte[] data) {
-        this.command = command;
-        this.data = data;
-    }
-
-    public static CustomMessage read(InputStream in, int length) throws IOException {
-        AccessCounter counter = new AccessCounter();
-        return new CustomMessage(varString(in, counter), bytes(in, length - counter.length()));
-    }
-
-    @Override
-    public Command getCommand() {
-        return Command.CUSTOM;
-    }
-
-    public String getCustomCommand() {
-        return command;
-    }
-
-    public byte[] getData() {
-        if (data != null) {
-            return data;
-        } else {
-            try {
-                ByteArrayOutputStream out = new ByteArrayOutputStream();
-                write(out);
-                return out.toByteArray();
-            } catch (IOException e) {
-                throw new RuntimeException(e);
-            }
-        }
-    }
-
-    @Override
-    public void write(OutputStream out) throws IOException {
-        if (data != null) {
-            Encode.varString(command, out);
-            out.write(data);
-        } else {
-            throw new RuntimeException("Tried to write custom message without data. " +
-                    "Programmer: did you forget to override #write()?");
-        }
-    }
-
-    public boolean isError() {
-        return COMMAND_ERROR.equals(command);
-    }
-
-    public static CustomMessage error(String message) {
-        try {
-            return new CustomMessage(COMMAND_ERROR, message.getBytes("UTF-8"));
-        } catch (UnsupportedEncodingException e) {
-            throw new RuntimeException(e);
-        }
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/Encrypted.java

@@ -1,32 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity;
-
-import ch.dissem.bitmessage.exception.DecryptionFailedException;
-
-import java.io.IOException;
-
-/**
- * Used for objects that have encrypted content
- */
-public interface Encrypted {
-    void encrypt(byte[] publicKey) throws IOException;
-
-    void decrypt(byte[] privateKey) throws IOException, DecryptionFailedException;
-
-    boolean isDecrypted();
-}

core/src/main/java/ch/dissem/bitmessage/entity/GetData.java

@@ -1,74 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity;
-
-import ch.dissem.bitmessage.entity.valueobject.InventoryVector;
-import ch.dissem.bitmessage.utils.Encode;
-
-import java.io.IOException;
-import java.io.OutputStream;
-import java.util.LinkedList;
-import java.util.List;
-
-/**
- * The 'getdata' command is used to request objects from a node.
- */
-public class GetData implements MessagePayload {
-    List<InventoryVector> inventory;
-
-    private GetData(Builder builder) {
-        inventory = builder.inventory;
-    }
-
-    @Override
-    public Command getCommand() {
-        return Command.GETDATA;
-    }
-
-    public List<InventoryVector> getInventory() {
-        return inventory;
-    }
-
-    @Override
-    public void write(OutputStream out) throws IOException {
-        Encode.varInt(inventory.size(), out);
-        for (InventoryVector iv : inventory) {
-            iv.write(out);
-        }
-    }
-
-    public static final class Builder {
-        private List<InventoryVector> inventory = new LinkedList<>();
-
-        public Builder() {
-        }
-
-        public Builder addInventoryVector(InventoryVector inventoryVector) {
-            this.inventory.add(inventoryVector);
-            return this;
-        }
-
-        public Builder inventory(List<InventoryVector> inventory) {
-            this.inventory = inventory;
-            return this;
-        }
-
-        public GetData build() {
-            return new GetData(this);
-        }
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/Inv.java

@@ -1,74 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity;
-
-import ch.dissem.bitmessage.entity.valueobject.InventoryVector;
-import ch.dissem.bitmessage.utils.Encode;
-
-import java.io.IOException;
-import java.io.OutputStream;
-import java.util.LinkedList;
-import java.util.List;
-
-/**
- * The 'inv' command holds up to 50000 inventory vectors, i.e. hashes of inventory items.
- */
-public class Inv implements MessagePayload {
-    private List<InventoryVector> inventory;
-
-    private Inv(Builder builder) {
-        inventory = builder.inventory;
-    }
-
-    public List<InventoryVector> getInventory() {
-        return inventory;
-    }
-
-    @Override
-    public Command getCommand() {
-        return Command.INV;
-    }
-
-    @Override
-    public void write(OutputStream out) throws IOException {
-        Encode.varInt(inventory.size(), out);
-        for (InventoryVector iv : inventory) {
-            iv.write(out);
-        }
-    }
-
-    public static final class Builder {
-        private List<InventoryVector> inventory = new LinkedList<>();
-
-        public Builder() {
-        }
-
-        public Builder addInventoryVector(InventoryVector inventoryVector) {
-            this.inventory.add(inventoryVector);
-            return this;
-        }
-
-        public Builder inventory(List<InventoryVector> inventory) {
-            this.inventory = inventory;
-            return this;
-        }
-
-        public Inv build() {
-            return new Inv(this);
-        }
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/MessagePayload.java

@@ -1,28 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity;
-
-/**
- * A command can hold a network message payload
- */
-public interface MessagePayload extends Streamable {
-    Command getCommand();
-
-    enum Command {
-        VERSION, VERACK, ADDR, INV, GETDATA, OBJECT, CUSTOM
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/NetworkMessage.java

@@ -1,93 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity;
-
-import ch.dissem.bitmessage.utils.Encode;
-
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.nio.ByteBuffer;
-import java.security.GeneralSecurityException;
-import java.security.NoSuchAlgorithmException;
-import java.security.NoSuchProviderException;
-
-import static ch.dissem.bitmessage.utils.Singleton.security;
-
-/**
- * A network message is exchanged between two nodes.
- */
-public class NetworkMessage implements Streamable {
-    /**
-     * Magic value indicating message origin network, and used to seek to next message when stream state is unknown
-     */
-    public final static int MAGIC = 0xE9BEB4D9;
-    public final static byte[] MAGIC_BYTES = ByteBuffer.allocate(4).putInt(MAGIC).array();
-
-    private final MessagePayload payload;
-
-    public NetworkMessage(MessagePayload payload) {
-        this.payload = payload;
-    }
-
-    /**
-     * First 4 bytes of sha512(payload)
-     */
-    private byte[] getChecksum(byte[] bytes) throws NoSuchProviderException, NoSuchAlgorithmException {
-        byte[] d = security().sha512(bytes);
-        return new byte[]{d[0], d[1], d[2], d[3]};
-    }
-
-    /**
-     * The actual data, a message or an object. Not to be confused with objectPayload.
-     */
-    public MessagePayload getPayload() {
-        return payload;
-    }
-
-    @Override
-    public void write(OutputStream out) throws IOException {
-        // magic
-        Encode.int32(MAGIC, out);
-
-        // ASCII string identifying the packet content, NULL padded (non-NULL padding results in packet rejected)
-        String command = payload.getCommand().name().toLowerCase();
-        out.write(command.getBytes("ASCII"));
-        for (int i = command.length(); i < 12; i++) {
-            out.write('\0');
-        }
-
-        ByteArrayOutputStream payloadStream = new ByteArrayOutputStream();
-        payload.write(payloadStream);
-        byte[] payloadBytes = payloadStream.toByteArray();
-
-        // Length of payload in number of bytes. Because of other restrictions, there is no reason why this length would
-        // ever be larger than 1600003 bytes. Some clients include a sanity-check to avoid processing messages which are
-        // larger than this.
-        Encode.int32(payloadBytes.length, out);
-
-        // checksum
-        try {
-            out.write(getChecksum(payloadBytes));
-        } catch (GeneralSecurityException e) {
-            throw new RuntimeException(e);
-        }
-
-        // message payload
-        out.write(payloadBytes);
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/ObjectMessage.java

@@ -1,233 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity;
-
-import ch.dissem.bitmessage.entity.payload.ObjectPayload;
-import ch.dissem.bitmessage.entity.payload.ObjectType;
-import ch.dissem.bitmessage.entity.payload.Pubkey;
-import ch.dissem.bitmessage.entity.valueobject.InventoryVector;
-import ch.dissem.bitmessage.entity.valueobject.PrivateKey;
-import ch.dissem.bitmessage.exception.DecryptionFailedException;
-import ch.dissem.bitmessage.utils.Bytes;
-import ch.dissem.bitmessage.utils.Encode;
-
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.OutputStream;
-
-import static ch.dissem.bitmessage.utils.Singleton.security;
-
-/**
- * The 'object' command sends an object that is shared throughout the network.
- */
-public class ObjectMessage implements MessagePayload {
-    private byte[] nonce;
-    private long expiresTime;
-    private long objectType;
-    /**
-     * The object's version
-     */
-    private long version;
-    private long stream;
-
-    private ObjectPayload payload;
-    private byte[] payloadBytes;
-
-    private ObjectMessage(Builder builder) {
-        nonce = builder.nonce;
-        expiresTime = builder.expiresTime;
-        objectType = builder.objectType;
-        version = builder.payload.getVersion();
-        stream = builder.streamNumber;
-        payload = builder.payload;
-    }
-
-    @Override
-    public Command getCommand() {
-        return Command.OBJECT;
-    }
-
-    public byte[] getNonce() {
-        return nonce;
-    }
-
-    public void setNonce(byte[] nonce) {
-        this.nonce = nonce;
-    }
-
-    public long getExpiresTime() {
-        return expiresTime;
-    }
-
-    public long getType() {
-        return objectType;
-    }
-
-    public ObjectPayload getPayload() {
-        return payload;
-    }
-
-    public long getVersion() {
-        return version;
-    }
-
-    public long getStream() {
-        return stream;
-    }
-
-    public InventoryVector getInventoryVector() {
-        return new InventoryVector(
-                Bytes.truncate(security().doubleSha512(nonce, getPayloadBytesWithoutNonce()), 32)
-        );
-    }
-
-    private boolean isEncrypted() {
-        return payload instanceof Encrypted && !((Encrypted) payload).isDecrypted();
-    }
-
-    public boolean isSigned() {
-        return payload.isSigned();
-    }
-
-    private byte[] getBytesToSign() {
-        try {
-            ByteArrayOutputStream out = new ByteArrayOutputStream();
-            writeHeaderWithoutNonce(out);
-            payload.writeBytesToSign(out);
-            return out.toByteArray();
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    public void sign(PrivateKey key) {
-        if (payload.isSigned()) {
-            payload.setSignature(security().getSignature(getBytesToSign(), key));
-        }
-    }
-
-    public void decrypt(PrivateKey key) throws IOException, DecryptionFailedException {
-        if (payload instanceof Encrypted) {
-            ((Encrypted) payload).decrypt(key.getPrivateEncryptionKey());
-        }
-    }
-
-    public void decrypt(byte[] privateEncryptionKey) throws IOException, DecryptionFailedException {
-        if (payload instanceof Encrypted) {
-            ((Encrypted) payload).decrypt(privateEncryptionKey);
-        }
-    }
-
-    public void encrypt(byte[] publicEncryptionKey) throws IOException {
-        if (payload instanceof Encrypted) {
-            ((Encrypted) payload).encrypt(publicEncryptionKey);
-        }
-    }
-
-    public void encrypt(Pubkey publicKey) {
-        try {
-            if (payload instanceof Encrypted) {
-                ((Encrypted) payload).encrypt(publicKey.getEncryptionKey());
-            }
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    public boolean isSignatureValid(Pubkey pubkey) throws IOException {
-        if (isEncrypted()) throw new IllegalStateException("Payload must be decrypted first");
-        return security().isSignatureValid(getBytesToSign(), payload.getSignature(), pubkey);
-    }
-
-    @Override
-    public void write(OutputStream out) throws IOException {
-        if (nonce != null) {
-            out.write(nonce);
-        } else {
-            out.write(new byte[8]);
-        }
-        out.write(getPayloadBytesWithoutNonce());
-    }
-
-    private void writeHeaderWithoutNonce(OutputStream out) throws IOException {
-        Encode.int64(expiresTime, out);
-        Encode.int32(objectType, out);
-        Encode.varInt(version, out);
-        Encode.varInt(stream, out);
-    }
-
-    public byte[] getPayloadBytesWithoutNonce() {
-        try {
-            if (payloadBytes == null) {
-                ByteArrayOutputStream out = new ByteArrayOutputStream();
-                writeHeaderWithoutNonce(out);
-                payload.write(out);
-                payloadBytes = out.toByteArray();
-            }
-            return payloadBytes;
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    public static final class Builder {
-        private byte[] nonce;
-        private long expiresTime;
-        private long objectType = -1;
-        private long streamNumber;
-        private ObjectPayload payload;
-
-        public Builder() {
-        }
-
-        public Builder nonce(byte[] nonce) {
-            this.nonce = nonce;
-            return this;
-        }
-
-        public Builder expiresTime(long expiresTime) {
-            this.expiresTime = expiresTime;
-            return this;
-        }
-
-        public Builder objectType(long objectType) {
-            this.objectType = objectType;
-            return this;
-        }
-
-        public Builder objectType(ObjectType objectType) {
-            this.objectType = objectType.getNumber();
-            return this;
-        }
-
-        public Builder stream(long streamNumber) {
-            this.streamNumber = streamNumber;
-            return this;
-        }
-
-        public Builder payload(ObjectPayload payload) {
-            this.payload = payload;
-            if (this.objectType == -1)
-                this.objectType = payload.getType().getNumber();
-            return this;
-        }
-
-        public ObjectMessage build() {
-            return new ObjectMessage(this);
-        }
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/Plaintext.java

@@ -1,464 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity;
-
-import ch.dissem.bitmessage.entity.valueobject.InventoryVector;
-import ch.dissem.bitmessage.entity.valueobject.Label;
-import ch.dissem.bitmessage.factory.Factory;
-import ch.dissem.bitmessage.utils.Decode;
-import ch.dissem.bitmessage.utils.Encode;
-import ch.dissem.bitmessage.utils.UnixTime;
-
-import java.io.*;
-import java.util.*;
-
-/**
- * The unencrypted message to be sent by 'msg' or 'broadcast'.
- */
-public class Plaintext implements Streamable {
-    private final Type type;
-    private final BitmessageAddress from;
-    private final long encoding;
-    private final byte[] message;
-    private final byte[] ack;
-    private Object id;
-    private InventoryVector inventoryVector;
-    private BitmessageAddress to;
-    private byte[] signature;
-    private Status status;
-    private Long sent;
-    private Long received;
-
-    private Set<Label> labels;
-    private byte[] initialHash;
-
-    private Plaintext(Builder builder) {
-        id = builder.id;
-        inventoryVector = builder.inventoryVector;
-        type = builder.type;
-        from = builder.from;
-        to = builder.to;
-        encoding = builder.encoding;
-        message = builder.message;
-        ack = builder.ack;
-        signature = builder.signature;
-        status = builder.status;
-        sent = builder.sent;
-        received = builder.received;
-        labels = builder.labels;
-    }
-
-    public static Plaintext read(Type type, InputStream in) throws IOException {
-        return readWithoutSignature(type, in)
-                .signature(Decode.varBytes(in))
-                .received(UnixTime.now())
-                .build();
-    }
-
-    public static Plaintext.Builder readWithoutSignature(Type type, InputStream in) throws IOException {
-        long version = Decode.varInt(in);
-        return new Builder(type)
-                .addressVersion(version)
-                .stream(Decode.varInt(in))
-                .behaviorBitfield(Decode.int32(in))
-                .publicSigningKey(Decode.bytes(in, 64))
-                .publicEncryptionKey(Decode.bytes(in, 64))
-                .nonceTrialsPerByte(version >= 3 ? Decode.varInt(in) : 0)
-                .extraBytes(version >= 3 ? Decode.varInt(in) : 0)
-                .destinationRipe(type == Type.MSG ? Decode.bytes(in, 20) : null)
-                .encoding(Decode.varInt(in))
-                .message(Decode.varBytes(in))
-                .ack(type == Type.MSG ? Decode.varBytes(in) : null);
-    }
-
-    public InventoryVector getInventoryVector() {
-        return inventoryVector;
-    }
-
-    public void setInventoryVector(InventoryVector inventoryVector) {
-        this.inventoryVector = inventoryVector;
-    }
-
-    public Type getType() {
-        return type;
-    }
-
-    public byte[] getMessage() {
-        return message;
-    }
-
-    public BitmessageAddress getFrom() {
-        return from;
-    }
-
-    public BitmessageAddress getTo() {
-        return to;
-    }
-
-    public void setTo(BitmessageAddress to) {
-        if (this.to.getVersion() != 0)
-            throw new RuntimeException("Correct address already set");
-        if (!Arrays.equals(this.to.getRipe(), to.getRipe())) {
-            throw new RuntimeException("RIPEs don't match");
-        }
-        this.to = to;
-    }
-
-    public Set<Label> getLabels() {
-        return labels;
-    }
-
-    public long getStream() {
-        return from.getStream();
-    }
-
-    public byte[] getSignature() {
-        return signature;
-    }
-
-    public void setSignature(byte[] signature) {
-        this.signature = signature;
-    }
-
-    public boolean isUnread() {
-        for (Label label : labels) {
-            if (label.getType() == Label.Type.UNREAD) {
-                return true;
-            }
-        }
-        return false;
-    }
-
-    public void write(OutputStream out, boolean includeSignature) throws IOException {
-        Encode.varInt(from.getVersion(), out);
-        Encode.varInt(from.getStream(), out);
-        Encode.int32(from.getPubkey().getBehaviorBitfield(), out);
-        out.write(from.getPubkey().getSigningKey(), 1, 64);
-        out.write(from.getPubkey().getEncryptionKey(), 1, 64);
-        if (from.getVersion() >= 3) {
-            Encode.varInt(from.getPubkey().getNonceTrialsPerByte(), out);
-            Encode.varInt(from.getPubkey().getExtraBytes(), out);
-        }
-        if (type == Type.MSG) {
-            out.write(to.getRipe());
-        }
-        Encode.varInt(encoding, out);
-        Encode.varInt(message.length, out);
-        out.write(message);
-        if (type == Type.MSG) {
-            Encode.varInt(ack.length, out);
-            out.write(ack);
-        }
-        if (includeSignature) {
-            if (signature == null) {
-                Encode.varInt(0, out);
-            } else {
-                Encode.varInt(signature.length, out);
-                out.write(signature);
-            }
-        }
-    }
-
-    @Override
-    public void write(OutputStream out) throws IOException {
-        write(out, true);
-    }
-
-    public Object getId() {
-        return id;
-    }
-
-    public void setId(long id) {
-        if (this.id != null) throw new IllegalStateException("ID already set");
-        this.id = id;
-    }
-
-    public Long getSent() {
-        return sent;
-    }
-
-    public Long getReceived() {
-        return received;
-    }
-
-    public Status getStatus() {
-        return status;
-    }
-
-    public void setStatus(Status status) {
-        this.status = status;
-    }
-
-    public String getSubject() {
-        Scanner s = new Scanner(new ByteArrayInputStream(message), "UTF-8");
-        String firstLine = s.nextLine();
-        if (encoding == 2) {
-            return firstLine.substring("Subject:".length()).trim();
-        } else if (firstLine.length() > 50) {
-            return firstLine.substring(0, 50).trim() + "...";
-        } else {
-            return firstLine;
-        }
-    }
-
-    public String getText() {
-        try {
-            String text = new String(message, "UTF-8");
-            if (encoding == 2) {
-                return text.substring(text.indexOf("\nBody:") + 6);
-            }
-            return text;
-        } catch (UnsupportedEncodingException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-        Plaintext plaintext = (Plaintext) o;
-        return Objects.equals(encoding, plaintext.encoding) &&
-                Objects.equals(from, plaintext.from) &&
-                Arrays.equals(message, plaintext.message) &&
-                Arrays.equals(ack, plaintext.ack) &&
-                Arrays.equals(to.getRipe(), plaintext.to.getRipe()) &&
-                Arrays.equals(signature, plaintext.signature) &&
-                Objects.equals(status, plaintext.status) &&
-                Objects.equals(sent, plaintext.sent) &&
-                Objects.equals(received, plaintext.received) &&
-                Objects.equals(labels, plaintext.labels);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(from, encoding, message, ack, to, signature, status, sent, received, labels);
-    }
-
-    public void addLabels(Label... labels) {
-        if (labels != null) {
-            Collections.addAll(this.labels, labels);
-        }
-    }
-
-    public void addLabels(Collection<Label> labels) {
-        if (labels != null) {
-            this.labels.addAll(labels);
-        }
-    }
-
-    public void setInitialHash(byte[] initialHash) {
-        this.initialHash = initialHash;
-    }
-
-    public byte[] getInitialHash() {
-        return initialHash;
-    }
-
-    public enum Encoding {
-        IGNORE(0), TRIVIAL(1), SIMPLE(2);
-
-        long code;
-
-        Encoding(long code) {
-            this.code = code;
-        }
-
-        public long getCode() {
-            return code;
-        }
-    }
-
-    public enum Status {
-        DRAFT,
-        // For sent messages
-        PUBKEY_REQUESTED,
-        DOING_PROOF_OF_WORK,
-        SENT,
-        SENT_ACKNOWLEDGED,
-        RECEIVED
-    }
-
-    public enum Type {
-        MSG, BROADCAST
-    }
-
-    public static final class Builder {
-        private Object id;
-        private InventoryVector inventoryVector;
-        private Type type;
-        private BitmessageAddress from;
-        private BitmessageAddress to;
-        private long addressVersion;
-        private long stream;
-        private int behaviorBitfield;
-        private byte[] publicSigningKey;
-        private byte[] publicEncryptionKey;
-        private long nonceTrialsPerByte;
-        private long extraBytes;
-        private byte[] destinationRipe;
-        private long encoding;
-        private byte[] message = new byte[0];
-        private byte[] ack = new byte[0];
-        private byte[] signature;
-        private long sent;
-        private long received;
-        private Status status;
-        private Set<Label> labels = new HashSet<>();
-
-        public Builder(Type type) {
-            this.type = type;
-        }
-
-        public Builder id(Object id) {
-            this.id = id;
-            return this;
-        }
-
-        public Builder IV(InventoryVector iv) {
-            this.inventoryVector = iv;
-            return this;
-        }
-
-        public Builder from(BitmessageAddress address) {
-            from = address;
-            return this;
-        }
-
-        public Builder to(BitmessageAddress address) {
-            if (type != Type.MSG && to != null)
-                throw new IllegalArgumentException("recipient address only allowed for msg");
-            to = address;
-            return this;
-        }
-
-        private Builder addressVersion(long addressVersion) {
-            this.addressVersion = addressVersion;
-            return this;
-        }
-
-        private Builder stream(long stream) {
-            this.stream = stream;
-            return this;
-        }
-
-        private Builder behaviorBitfield(int behaviorBitfield) {
-            this.behaviorBitfield = behaviorBitfield;
-            return this;
-        }
-
-        private Builder publicSigningKey(byte[] publicSigningKey) {
-            this.publicSigningKey = publicSigningKey;
-            return this;
-        }
-
-        private Builder publicEncryptionKey(byte[] publicEncryptionKey) {
-            this.publicEncryptionKey = publicEncryptionKey;
-            return this;
-        }
-
-        private Builder nonceTrialsPerByte(long nonceTrialsPerByte) {
-            this.nonceTrialsPerByte = nonceTrialsPerByte;
-            return this;
-        }
-
-        private Builder extraBytes(long extraBytes) {
-            this.extraBytes = extraBytes;
-            return this;
-        }
-
-        private Builder destinationRipe(byte[] ripe) {
-            if (type != Type.MSG && ripe != null) throw new IllegalArgumentException("ripe only allowed for msg");
-            this.destinationRipe = ripe;
-            return this;
-        }
-
-        public Builder encoding(Encoding encoding) {
-            this.encoding = encoding.getCode();
-            return this;
-        }
-
-        private Builder encoding(long encoding) {
-            this.encoding = encoding;
-            return this;
-        }
-
-        public Builder message(String subject, String message) {
-            try {
-                this.encoding = Encoding.SIMPLE.getCode();
-                this.message = ("Subject:" + subject + '\n' + "Body:" + message).getBytes("UTF-8");
-            } catch (UnsupportedEncodingException e) {
-                throw new RuntimeException(e);
-            }
-            return this;
-        }
-
-        public Builder message(byte[] message) {
-            this.message = message;
-            return this;
-        }
-
-        public Builder ack(byte[] ack) {
-            if (type != Type.MSG && ack != null) throw new IllegalArgumentException("ack only allowed for msg");
-            this.ack = ack;
-            return this;
-        }
-
-        public Builder signature(byte[] signature) {
-            this.signature = signature;
-            return this;
-        }
-
-        public Builder sent(long sent) {
-            this.sent = sent;
-            return this;
-        }
-
-        public Builder received(long received) {
-            this.received = received;
-            return this;
-        }
-
-        public Builder status(Status status) {
-            this.status = status;
-            return this;
-        }
-
-        public Builder labels(Collection<Label> labels) {
-            this.labels.addAll(labels);
-            return this;
-        }
-
-        public Plaintext build() {
-            if (from == null) {
-                from = new BitmessageAddress(Factory.createPubkey(
-                        addressVersion,
-                        stream,
-                        publicSigningKey,
-                        publicEncryptionKey,
-                        nonceTrialsPerByte,
-                        extraBytes,
-                        behaviorBitfield
-                ));
-            }
-            if (to == null && type != Type.BROADCAST) {
-                to = new BitmessageAddress(0, 0, destinationRipe);
-            }
-            return new Plaintext(this);
-        }
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/PlaintextHolder.java

@@ -1,21 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity;
-
-public interface PlaintextHolder {
-    Plaintext getPlaintext();
-}

core/src/main/java/ch/dissem/bitmessage/entity/Streamable.java

@@ -1,28 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity;
-
-import java.io.IOException;
-import java.io.OutputStream;
-import java.io.Serializable;
-
-/**
- * An object that can be written to an {@link OutputStream}
- */
-public interface Streamable extends Serializable {
-    void write(OutputStream stream) throws IOException;
-}

core/src/main/java/ch/dissem/bitmessage/entity/VerAck.java

@@ -1,35 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity;
-
-import java.io.IOException;
-import java.io.OutputStream;
-
-/**
- * The 'verack' command answers a 'version' command, accepting the other node's version.
- */
-public class VerAck implements MessagePayload {
-    @Override
-    public Command getCommand() {
-        return Command.VERACK;
-    }
-
-    @Override
-    public void write(OutputStream stream) throws IOException {
-        // 'verack' doesn't have any payload, so there is nothing to write
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/Version.java

@@ -1,203 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity;
-
-import ch.dissem.bitmessage.BitmessageContext;
-import ch.dissem.bitmessage.entity.valueobject.NetworkAddress;
-import ch.dissem.bitmessage.utils.Encode;
-import ch.dissem.bitmessage.utils.UnixTime;
-
-import java.io.IOException;
-import java.io.OutputStream;
-import java.util.Random;
-
-/**
- * The 'version' command advertises this node's latest supported protocol version upon initiation.
- */
-public class Version implements MessagePayload {
-    /**
-     * Identifies protocol version being used by the node. Should equal 3. Nodes should disconnect if the remote node's
-     * version is lower but continue with the connection if it is higher.
-     */
-    private final int version;
-
-    /**
-     * bitfield of features to be enabled for this connection
-     */
-    private final long services;
-
-    /**
-     * standard UNIX timestamp in seconds
-     */
-    private final long timestamp;
-
-    /**
-     * The network address of the node receiving this message (not including the time or stream number)
-     */
-    private final NetworkAddress addrRecv;
-
-    /**
-     * The network address of the node emitting this message (not including the time or stream number and the ip itself
-     * is ignored by the receiver)
-     */
-    private final NetworkAddress addrFrom;
-
-    /**
-     * Random nonce used to detect connections to self.
-     */
-    private final long nonce;
-
-    /**
-     * User Agent (0x00 if string is 0 bytes long). Sending nodes must not include a user_agent longer than 5000 bytes.
-     */
-    private final String userAgent;
-
-    /**
-     * The stream numbers that the emitting node is interested in. Sending nodes must not include more than 160000
-     * stream numbers.
-     */
-    private final long[] streams;
-
-    private Version(Builder builder) {
-        version = builder.version;
-        services = builder.services;
-        timestamp = builder.timestamp;
-        addrRecv = builder.addrRecv;
-        addrFrom = builder.addrFrom;
-        nonce = builder.nonce;
-        userAgent = builder.userAgent;
-        streams = builder.streamNumbers;
-    }
-
-    public int getVersion() {
-        return version;
-    }
-
-    public long getServices() {
-        return services;
-    }
-
-    public long getTimestamp() {
-        return timestamp;
-    }
-
-    public NetworkAddress getAddrRecv() {
-        return addrRecv;
-    }
-
-    public NetworkAddress getAddrFrom() {
-        return addrFrom;
-    }
-
-    public long getNonce() {
-        return nonce;
-    }
-
-    public String getUserAgent() {
-        return userAgent;
-    }
-
-    public long[] getStreams() {
-        return streams;
-    }
-
-    @Override
-    public Command getCommand() {
-        return Command.VERSION;
-    }
-
-    @Override
-    public void write(OutputStream stream) throws IOException {
-        Encode.int32(version, stream);
-        Encode.int64(services, stream);
-        Encode.int64(timestamp, stream);
-        addrRecv.write(stream, true);
-        addrFrom.write(stream, true);
-        Encode.int64(nonce, stream);
-        Encode.varString(userAgent, stream);
-        Encode.varIntList(streams, stream);
-    }
-
-
-    public static final class Builder {
-        private int version;
-        private long services;
-        private long timestamp;
-        private NetworkAddress addrRecv;
-        private NetworkAddress addrFrom;
-        private long nonce;
-        private String userAgent;
-        private long[] streamNumbers;
-
-        public Builder() {
-        }
-
-        public Builder defaults() {
-            version = BitmessageContext.CURRENT_VERSION;
-            services = 1;
-            timestamp = UnixTime.now();
-            nonce = new Random().nextInt();
-            userAgent = "/Jabit:0.0.1/";
-            streamNumbers = new long[]{1};
-            return this;
-        }
-
-        public Builder version(int version) {
-            this.version = version;
-            return this;
-        }
-
-        public Builder services(long services) {
-            this.services = services;
-            return this;
-        }
-
-        public Builder timestamp(long timestamp) {
-            this.timestamp = timestamp;
-            return this;
-        }
-
-        public Builder addrRecv(NetworkAddress addrRecv) {
-            this.addrRecv = addrRecv;
-            return this;
-        }
-
-        public Builder addrFrom(NetworkAddress addrFrom) {
-            this.addrFrom = addrFrom;
-            return this;
-        }
-
-        public Builder nonce(long nonce) {
-            this.nonce = nonce;
-            return this;
-        }
-
-        public Builder userAgent(String userAgent) {
-            this.userAgent = userAgent;
-            return this;
-        }
-
-        public Builder streams(long... streamNumbers) {
-            this.streamNumbers = streamNumbers;
-            return this;
-        }
-
-        public Version build() {
-            return new Version(this);
-        }
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/payload/Broadcast.java

@@ -1,97 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity.payload;
-
-import ch.dissem.bitmessage.entity.BitmessageAddress;
-import ch.dissem.bitmessage.entity.Encrypted;
-import ch.dissem.bitmessage.entity.Plaintext;
-import ch.dissem.bitmessage.entity.PlaintextHolder;
-import ch.dissem.bitmessage.exception.DecryptionFailedException;
-
-import java.io.IOException;
-
-import static ch.dissem.bitmessage.entity.Plaintext.Type.BROADCAST;
-import static ch.dissem.bitmessage.utils.Singleton.security;
-
-/**
- * Users who are subscribed to the sending address will see the message appear in their inbox.
- * Broadcasts are version 4 or 5.
- */
-public abstract class Broadcast extends ObjectPayload implements Encrypted, PlaintextHolder {
-    protected final long stream;
-    protected CryptoBox encrypted;
-    protected Plaintext plaintext;
-
-    protected Broadcast(long version, long stream, CryptoBox encrypted, Plaintext plaintext) {
-        super(version);
-        this.stream = stream;
-        this.encrypted = encrypted;
-        this.plaintext = plaintext;
-    }
-
-    public static long getVersion(BitmessageAddress address) {
-        return address.getVersion() < 4 ? 4 : 5;
-    }
-
-    @Override
-    public boolean isSigned() {
-        return true;
-    }
-
-    @Override
-    public byte[] getSignature() {
-        return plaintext.getSignature();
-    }
-
-    @Override
-    public void setSignature(byte[] signature) {
-        plaintext.setSignature(signature);
-    }
-
-    @Override
-    public long getStream() {
-        return stream;
-    }
-
-    @Override
-    public Plaintext getPlaintext() {
-        return plaintext;
-    }
-
-    @Override
-    public void encrypt(byte[] publicKey) throws IOException {
-        this.encrypted = new CryptoBox(plaintext, publicKey);
-    }
-
-    public void encrypt() throws IOException {
-        encrypt(security().createPublicKey(plaintext.getFrom().getPublicDecryptionKey()));
-    }
-
-    @Override
-    public void decrypt(byte[] privateKey) throws IOException, DecryptionFailedException {
-        plaintext = Plaintext.read(BROADCAST, encrypted.decrypt(privateKey));
-    }
-
-    public void decrypt(BitmessageAddress address) throws IOException, DecryptionFailedException {
-        decrypt(address.getPublicDecryptionKey());
-    }
-
-    @Override
-    public boolean isDecrypted() {
-        return plaintext != null;
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/payload/CryptoBox.java

@@ -1,196 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity.payload;
-
-import ch.dissem.bitmessage.entity.Streamable;
-import ch.dissem.bitmessage.exception.DecryptionFailedException;
-import ch.dissem.bitmessage.utils.*;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import java.io.*;
-import java.util.Arrays;
-
-import static ch.dissem.bitmessage.entity.valueobject.PrivateKey.PRIVATE_KEY_SIZE;
-import static ch.dissem.bitmessage.utils.Singleton.security;
-
-
-public class CryptoBox implements Streamable {
-    private static final Logger LOG = LoggerFactory.getLogger(CryptoBox.class);
-
-    private final byte[] initializationVector;
-    private final int curveType;
-    private final byte[] R;
-    private final byte[] mac;
-    private byte[] encrypted;
-
-    private long addressVersion;
-
-
-    public CryptoBox(Streamable data, byte[] K) throws IOException {
-        this(Encode.bytes(data), K);
-    }
-
-    public CryptoBox(byte[] data, byte[] K) throws IOException {
-        curveType = 0x02CA;
-
-        // 1. The destination public key is called K.
-        // 2. Generate 16 random bytes using a secure random number generator. Call them IV.
-        initializationVector = security().randomBytes(16);
-
-        // 3. Generate a new random EC key pair with private key called r and public key called R.
-        byte[] r = security().randomBytes(PRIVATE_KEY_SIZE);
-        R = security().createPublicKey(r);
-        // 4. Do an EC point multiply with public key K and private key r. This gives you public key P.
-        byte[] P = security().multiply(K, r);
-        byte[] X = Points.getX(P);
-        // 5. Use the X component of public key P and calculate the SHA512 hash H.
-        byte[] H = security().sha512(X);
-        // 6. The first 32 bytes of H are called key_e and the last 32 bytes are called key_m.
-        byte[] key_e = Arrays.copyOfRange(H, 0, 32);
-        byte[] key_m = Arrays.copyOfRange(H, 32, 64);
-        // 7. Pad the input text to a multiple of 16 bytes, in accordance to PKCS7.
-        // 8. Encrypt the data with AES-256-CBC, using IV as initialization vector, key_e as encryption key and the padded input text as payload. Call the output cipher text.
-        encrypted = security().crypt(true, data, key_e, initializationVector);
-        // 9. Calculate a 32 byte MAC with HMACSHA256, using key_m as salt and IV + R + cipher text as data. Call the output MAC.
-        mac = calculateMac(key_m);
-
-        // The resulting data is: IV + R + cipher text + MAC
-    }
-
-    private CryptoBox(Builder builder) {
-        initializationVector = builder.initializationVector;
-        curveType = builder.curveType;
-        R = security().createPoint(builder.xComponent, builder.yComponent);
-        encrypted = builder.encrypted;
-        mac = builder.mac;
-    }
-
-    public static CryptoBox read(InputStream stream, int length) throws IOException {
-        AccessCounter counter = new AccessCounter();
-        return new Builder()
-                .IV(Decode.bytes(stream, 16, counter))
-                .curveType(Decode.uint16(stream, counter))
-                .X(Decode.shortVarBytes(stream, counter))
-                .Y(Decode.shortVarBytes(stream, counter))
-                .encrypted(Decode.bytes(stream, length - counter.length() - 32))
-                .MAC(Decode.bytes(stream, 32))
-                .build();
-    }
-
-    /**
-     * @param k a private key, typically should be 32 bytes long
-     * @return an InputStream yielding the decrypted data
-     * @throws DecryptionFailedException if the payload can't be decrypted using this private key
-     * @see <a href='https://bitmessage.org/wiki/Encryption#Decryption'>https://bitmessage.org/wiki/Encryption#Decryption</a>
-     */
-    public InputStream decrypt(byte[] k) throws DecryptionFailedException {
-        // 1. The private key used to decrypt is called k.
-        // 2. Do an EC point multiply with private key k and public key R. This gives you public key P.
-        byte[] P = security().multiply(R, k);
-        // 3. Use the X component of public key P and calculate the SHA512 hash H.
-        byte[] H = security().sha512(Arrays.copyOfRange(P, 1, 33));
-        // 4. The first 32 bytes of H are called key_e and the last 32 bytes are called key_m.
-        byte[] key_e = Arrays.copyOfRange(H, 0, 32);
-        byte[] key_m = Arrays.copyOfRange(H, 32, 64);
-
-        // 5. Calculate MAC' with HMACSHA256, using key_m as salt and IV + R + cipher text as data.
-        // 6. Compare MAC with MAC'. If not equal, decryption will fail.
-        if (!Arrays.equals(mac, calculateMac(key_m))) {
-            throw new DecryptionFailedException();
-        }
-
-        // 7. Decrypt the cipher text with AES-256-CBC, using IV as initialization vector, key_e as decryption key
-        //    and the cipher text as payload. The output is the padded input text.
-        return new ByteArrayInputStream(security().crypt(false, encrypted, key_e, initializationVector));
-    }
-
-    private byte[] calculateMac(byte[] key_m) {
-        try {
-            ByteArrayOutputStream macData = new ByteArrayOutputStream();
-            writeWithoutMAC(macData);
-            return security().mac(key_m, macData.toByteArray());
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    private void writeWithoutMAC(OutputStream out) throws IOException {
-        out.write(initializationVector);
-        Encode.int16(curveType, out);
-        writeCoordinateComponent(out, Points.getX(R));
-        writeCoordinateComponent(out, Points.getY(R));
-        out.write(encrypted);
-    }
-
-    private void writeCoordinateComponent(OutputStream out, byte[] x) throws IOException {
-        int offset = Bytes.numberOfLeadingZeros(x);
-        int length = x.length - offset;
-        Encode.int16(length, out);
-        out.write(x, offset, length);
-    }
-
-    @Override
-    public void write(OutputStream stream) throws IOException {
-        writeWithoutMAC(stream);
-        stream.write(mac);
-    }
-
-    public static final class Builder {
-        private byte[] initializationVector;
-        private int curveType;
-        private byte[] xComponent;
-        private byte[] yComponent;
-        private byte[] encrypted;
-        private byte[] mac;
-
-        public Builder IV(byte[] initializationVector) {
-            this.initializationVector = initializationVector;
-            return this;
-        }
-
-        public Builder curveType(int curveType) {
-            if (curveType != 0x2CA) LOG.trace("Unexpected curve type " + curveType);
-            this.curveType = curveType;
-            return this;
-        }
-
-        public Builder X(byte[] xComponent) {
-            this.xComponent = xComponent;
-            return this;
-        }
-
-        public Builder Y(byte[] yComponent) {
-            this.yComponent = yComponent;
-            return this;
-        }
-
-        private Builder encrypted(byte[] encrypted) {
-            this.encrypted = encrypted;
-            return this;
-        }
-
-        public Builder MAC(byte[] mac) {
-            this.mac = mac;
-            return this;
-        }
-
-        public CryptoBox build() {
-            return new CryptoBox(this);
-        }
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/payload/GenericPayload.java

@@ -1,76 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity.payload;
-
-import ch.dissem.bitmessage.utils.Decode;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.util.Arrays;
-
-/**
- * In cases we don't know what to do with an object, we just store its bytes and send it again - we don't really
- * have to know what it is.
- */
-public class GenericPayload extends ObjectPayload {
-    private long stream;
-    private byte[] data;
-
-    public GenericPayload(long version, long stream, byte[] data) {
-        super(version);
-        this.stream = stream;
-        this.data = data;
-    }
-
-    public static GenericPayload read(long version, InputStream is, long stream, int length) throws IOException {
-        return new GenericPayload(version, stream, Decode.bytes(is, length));
-    }
-
-    @Override
-    public ObjectType getType() {
-        return null;
-    }
-
-    @Override
-    public long getStream() {
-        return stream;
-    }
-
-    @Override
-    public void write(OutputStream stream) throws IOException {
-        stream.write(data);
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-
-        GenericPayload that = (GenericPayload) o;
-
-        if (stream != that.stream) return false;
-        return Arrays.equals(data, that.data);
-    }
-
-    @Override
-    public int hashCode() {
-        int result = (int) (stream ^ (stream >>> 32));
-        result = 31 * result + Arrays.hashCode(data);
-        return result;
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/payload/GetPubkey.java

@@ -1,74 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity.payload;
-
-import ch.dissem.bitmessage.entity.BitmessageAddress;
-import ch.dissem.bitmessage.utils.Decode;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-
-/**
- * Request for a public key.
- */
-public class GetPubkey extends ObjectPayload {
-    private long stream;
-    private byte[] ripeTag;
-
-    public GetPubkey(BitmessageAddress address) {
-        super(address.getVersion());
-        this.stream = address.getStream();
-        if (address.getVersion() < 4)
-            this.ripeTag = address.getRipe();
-        else
-            this.ripeTag = address.getTag();
-    }
-
-    private GetPubkey(long version, long stream, byte[] ripeOrTag) {
-        super(version);
-        this.stream = stream;
-        this.ripeTag = ripeOrTag;
-    }
-
-    public static GetPubkey read(InputStream is, long stream, int length, long version) throws IOException {
-        return new GetPubkey(version, stream, Decode.bytes(is, length));
-    }
-
-    /**
-     * @return an array of bytes that represent either the ripe, or the tag of an address, depending on the
-     * address version.
-     */
-    public byte[] getRipeTag() {
-        return ripeTag;
-    }
-
-    @Override
-    public ObjectType getType() {
-        return ObjectType.GET_PUBKEY;
-    }
-
-    @Override
-    public long getStream() {
-        return stream;
-    }
-
-    @Override
-    public void write(OutputStream stream) throws IOException {
-        stream.write(ripeTag);
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/payload/Msg.java

@@ -1,109 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity.payload;
-
-import ch.dissem.bitmessage.entity.Encrypted;
-import ch.dissem.bitmessage.entity.Plaintext;
-import ch.dissem.bitmessage.entity.PlaintextHolder;
-import ch.dissem.bitmessage.exception.DecryptionFailedException;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-
-import static ch.dissem.bitmessage.entity.Plaintext.Type.MSG;
-
-/**
- * Used for person-to-person messages.
- */
-public class Msg extends ObjectPayload implements Encrypted, PlaintextHolder {
-    private long stream;
-    private CryptoBox encrypted;
-    private Plaintext plaintext;
-
-    private Msg(long stream, CryptoBox encrypted) {
-        super(1);
-        this.stream = stream;
-        this.encrypted = encrypted;
-    }
-
-    public Msg(Plaintext plaintext) {
-        super(1);
-        this.stream = plaintext.getStream();
-        this.plaintext = plaintext;
-    }
-
-    public static Msg read(InputStream in, long stream, int length) throws IOException {
-        return new Msg(stream, CryptoBox.read(in, length));
-    }
-
-    @Override
-    public Plaintext getPlaintext() {
-        return plaintext;
-    }
-
-    @Override
-    public ObjectType getType() {
-        return ObjectType.MSG;
-    }
-
-    @Override
-    public long getStream() {
-        return stream;
-    }
-
-    @Override
-    public boolean isSigned() {
-        return true;
-    }
-
-    @Override
-    public void writeBytesToSign(OutputStream out) throws IOException {
-        plaintext.write(out, false);
-    }
-
-    @Override
-    public byte[] getSignature() {
-        return plaintext.getSignature();
-    }
-
-    @Override
-    public void setSignature(byte[] signature) {
-        plaintext.setSignature(signature);
-    }
-
-    @Override
-    public void encrypt(byte[] publicKey) throws IOException {
-        this.encrypted = new CryptoBox(plaintext, publicKey);
-    }
-
-    @Override
-    public void decrypt(byte[] privateKey) throws IOException, DecryptionFailedException {
-        plaintext = Plaintext.read(MSG, encrypted.decrypt(privateKey));
-    }
-
-    @Override
-    public boolean isDecrypted() {
-        return plaintext != null;
-    }
-
-    @Override
-    public void write(OutputStream out) throws IOException {
-        if (encrypted == null) throw new IllegalStateException("Msg must be signed and encrypted before writing it.");
-        encrypted.write(out);
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/payload/ObjectPayload.java

@@ -1,65 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity.payload;
-
-import ch.dissem.bitmessage.entity.ObjectMessage;
-import ch.dissem.bitmessage.entity.Streamable;
-
-import java.io.IOException;
-import java.io.OutputStream;
-import java.io.Serializable;
-
-/**
- * The payload of an 'object' command. This is shared by the network.
- */
-public abstract class ObjectPayload implements Streamable {
-    private final long version;
-
-    protected ObjectPayload(long version) {
-        this.version = version;
-    }
-
-
-    public abstract ObjectType getType();
-
-    public abstract long getStream();
-
-    public long getVersion() {
-        return version;
-    }
-
-    public boolean isSigned() {
-        return false;
-    }
-
-    public void writeBytesToSign(OutputStream out) throws IOException {
-        // nothing to do
-    }
-
-    /**
-     * @return the ECDSA signature which, as of protocol v3, covers the object header starting with the time,
-     * appended with the data described in this table down to the extra_bytes. Therefore, this must
-     * be checked and set in the {@link ObjectMessage} object.
-     */
-    public byte[] getSignature() {
-        return null;
-    }
-
-    public void setSignature(byte[] signature) {
-        // nothing to do
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/payload/ObjectType.java

@@ -1,44 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity.payload;
-
-/**
- * Known types for 'object' messages. Must not be used where an unknown type must be resent.
- */
-public enum ObjectType {
-    GET_PUBKEY(0),
-    PUBKEY(1),
-    MSG(2),
-    BROADCAST(3);
-
-    int number;
-
-    ObjectType(int number) {
-        this.number = number;
-    }
-
-    public static ObjectType fromNumber(long number) {
-        for (ObjectType type : values()) {
-            if (type.number == number) return type;
-        }
-        return null;
-    }
-
-    public long getNumber() {
-        return number;
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/payload/Pubkey.java

@@ -1,107 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity.payload;
-
-import java.io.IOException;
-import java.io.OutputStream;
-import java.util.ArrayList;
-
-import static ch.dissem.bitmessage.utils.Singleton.security;
-
-/**
- * Public keys for signing and encryption, the answer to a 'getpubkey' request.
- */
-public abstract class Pubkey extends ObjectPayload {
-    public final static long LATEST_VERSION = 4;
-
-    protected Pubkey(long version) {
-        super(version);
-    }
-
-    public static byte[] getRipe(byte[] publicSigningKey, byte[] publicEncryptionKey) {
-        return security().ripemd160(security().sha512(publicSigningKey, publicEncryptionKey));
-    }
-
-    public abstract byte[] getSigningKey();
-
-    public abstract byte[] getEncryptionKey();
-
-    public abstract int getBehaviorBitfield();
-
-    public byte[] getRipe() {
-        return security().ripemd160(security().sha512(getSigningKey(), getEncryptionKey()));
-    }
-
-    public long getNonceTrialsPerByte() {
-        return 0;
-    }
-
-    public long getExtraBytes() {
-        return 0;
-    }
-
-    public void writeUnencrypted(OutputStream out) throws IOException {
-        write(out);
-    }
-
-    protected byte[] add0x04(byte[] key) {
-        if (key.length == 65) return key;
-        byte[] result = new byte[65];
-        result[0] = 4;
-        System.arraycopy(key, 0, result, 1, 64);
-        return result;
-    }
-
-    /**
-     * Bits 0 through 29 are yet undefined
-     */
-    public enum Feature {
-        /**
-         * Receiving node expects that the RIPE hash encoded in their address preceedes the encrypted message data of msg
-         * messages bound for them.
-         */
-        INCLUDE_DESTINATION(1 << 30),
-        /**
-         * If true, the receiving node does send acknowledgements (rather than dropping them).
-         */
-        DOES_ACK(1 << 31);
-
-        private int bit;
-
-        Feature(int bit) {
-            this.bit = bit;
-        }
-
-        public static int bitfield(Feature... features) {
-            int bits = 0;
-            for (Feature feature : features) {
-                bits |= feature.bit;
-            }
-            return bits;
-        }
-
-        public static Feature[] features(int bitfield) {
-            ArrayList<Feature> features = new ArrayList<>(Feature.values().length);
-            for (Feature feature : Feature.values()) {
-                if ((bitfield & feature.bit) != 0) {
-                    features.add(feature);
-                }
-            }
-            return features.toArray(new Feature[features.size()]);
-        }
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/payload/V2Pubkey.java

@@ -1,126 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity.payload;
-
-import ch.dissem.bitmessage.utils.Decode;
-import ch.dissem.bitmessage.utils.Encode;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-
-/**
- * A version 2 public key.
- */
-public class V2Pubkey extends Pubkey {
-    protected long stream;
-    protected int behaviorBitfield;
-    protected byte[] publicSigningKey; // 64 Bytes
-    protected byte[] publicEncryptionKey; // 64 Bytes
-
-    protected V2Pubkey(long version) {
-        super(version);
-    }
-
-    private V2Pubkey(long version, Builder builder) {
-        super(version);
-        stream = builder.streamNumber;
-        behaviorBitfield = builder.behaviorBitfield;
-        publicSigningKey = add0x04(builder.publicSigningKey);
-        publicEncryptionKey = add0x04(builder.publicEncryptionKey);
-    }
-
-    public static V2Pubkey read(InputStream is, long stream) throws IOException {
-        return new V2Pubkey.Builder()
-                .stream(stream)
-                .behaviorBitfield((int) Decode.uint32(is))
-                .publicSigningKey(Decode.bytes(is, 64))
-                .publicEncryptionKey(Decode.bytes(is, 64))
-                .build();
-    }
-
-    @Override
-    public long getVersion() {
-        return 2;
-    }
-
-    @Override
-    public ObjectType getType() {
-        return ObjectType.PUBKEY;
-    }
-
-    @Override
-    public long getStream() {
-        return stream;
-    }
-
-    @Override
-    public byte[] getSigningKey() {
-        return publicSigningKey;
-    }
-
-    @Override
-    public byte[] getEncryptionKey() {
-        return publicEncryptionKey;
-    }
-
-    @Override
-    public int getBehaviorBitfield() {
-        return behaviorBitfield;
-    }
-
-    @Override
-    public void write(OutputStream os) throws IOException {
-        Encode.int32(behaviorBitfield, os);
-        os.write(publicSigningKey, 1, 64);
-        os.write(publicEncryptionKey, 1, 64);
-    }
-
-    public static class Builder {
-        private long streamNumber;
-        private int behaviorBitfield;
-        private byte[] publicSigningKey;
-        private byte[] publicEncryptionKey;
-
-        public Builder() {
-        }
-
-        public Builder stream(long streamNumber) {
-            this.streamNumber = streamNumber;
-            return this;
-        }
-
-        public Builder behaviorBitfield(int behaviorBitfield) {
-            this.behaviorBitfield = behaviorBitfield;
-            return this;
-        }
-
-        public Builder publicSigningKey(byte[] publicSigningKey) {
-            this.publicSigningKey = publicSigningKey;
-            return this;
-        }
-
-        public Builder publicEncryptionKey(byte[] publicEncryptionKey) {
-            this.publicEncryptionKey = publicEncryptionKey;
-            return this;
-        }
-
-        public V2Pubkey build() {
-            return new V2Pubkey(2, this);
-        }
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/payload/V3Pubkey.java

@@ -1,168 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity.payload;
-
-import ch.dissem.bitmessage.utils.Decode;
-import ch.dissem.bitmessage.utils.Encode;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.util.Arrays;
-import java.util.Objects;
-
-/**
- * A version 3 public key.
- */
-public class V3Pubkey extends V2Pubkey {
-    long nonceTrialsPerByte;
-    long extraBytes;
-    byte[] signature;
-
-    protected V3Pubkey(long version, Builder builder) {
-        super(version);
-        stream = builder.streamNumber;
-        behaviorBitfield = builder.behaviorBitfield;
-        publicSigningKey = add0x04(builder.publicSigningKey);
-        publicEncryptionKey = add0x04(builder.publicEncryptionKey);
-        nonceTrialsPerByte = builder.nonceTrialsPerByte;
-        extraBytes = builder.extraBytes;
-        signature = builder.signature;
-    }
-
-    public static V3Pubkey read(InputStream is, long stream) throws IOException {
-        return new V3Pubkey.Builder()
-                .stream(stream)
-                .behaviorBitfield(Decode.int32(is))
-                .publicSigningKey(Decode.bytes(is, 64))
-                .publicEncryptionKey(Decode.bytes(is, 64))
-                .nonceTrialsPerByte(Decode.varInt(is))
-                .extraBytes(Decode.varInt(is))
-                .signature(Decode.varBytes(is))
-                .build();
-    }
-
-    @Override
-    public void write(OutputStream out) throws IOException {
-        writeBytesToSign(out);
-        Encode.varInt(signature.length, out);
-        out.write(signature);
-    }
-
-    @Override
-    public long getVersion() {
-        return 3;
-    }
-
-    public long getNonceTrialsPerByte() {
-        return nonceTrialsPerByte;
-    }
-
-    public long getExtraBytes() {
-        return extraBytes;
-    }
-
-    public boolean isSigned() {
-        return true;
-    }
-
-    public void writeBytesToSign(OutputStream out) throws IOException {
-        super.write(out);
-        Encode.varInt(nonceTrialsPerByte, out);
-        Encode.varInt(extraBytes, out);
-    }
-
-    @Override
-    public byte[] getSignature() {
-        return signature;
-    }
-
-    @Override
-    public void setSignature(byte[] signature) {
-        this.signature = signature;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-        V3Pubkey pubkey = (V3Pubkey) o;
-        return Objects.equals(nonceTrialsPerByte, pubkey.nonceTrialsPerByte) &&
-                Objects.equals(extraBytes, pubkey.extraBytes) &&
-                stream == pubkey.stream &&
-                behaviorBitfield == pubkey.behaviorBitfield &&
-                Arrays.equals(publicSigningKey, pubkey.publicSigningKey) &&
-                Arrays.equals(publicEncryptionKey, pubkey.publicEncryptionKey);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(nonceTrialsPerByte, extraBytes);
-    }
-
-    public static class Builder {
-        private long streamNumber;
-        private int behaviorBitfield;
-        private byte[] publicSigningKey;
-        private byte[] publicEncryptionKey;
-        private long nonceTrialsPerByte;
-        private long extraBytes;
-        private byte[] signature = new byte[0];
-
-        public Builder() {
-        }
-
-        public Builder stream(long streamNumber) {
-            this.streamNumber = streamNumber;
-            return this;
-        }
-
-        public Builder behaviorBitfield(int behaviorBitfield) {
-            this.behaviorBitfield = behaviorBitfield;
-            return this;
-        }
-
-        public Builder publicSigningKey(byte[] publicSigningKey) {
-            this.publicSigningKey = publicSigningKey;
-            return this;
-        }
-
-        public Builder publicEncryptionKey(byte[] publicEncryptionKey) {
-            this.publicEncryptionKey = publicEncryptionKey;
-            return this;
-        }
-
-        public Builder nonceTrialsPerByte(long nonceTrialsPerByte) {
-            this.nonceTrialsPerByte = nonceTrialsPerByte;
-            return this;
-        }
-
-        public Builder extraBytes(long extraBytes) {
-            this.extraBytes = extraBytes;
-            return this;
-        }
-
-        public Builder signature(byte[] signature) {
-            this.signature = signature;
-            return this;
-        }
-
-        public V3Pubkey build() {
-            return new V3Pubkey(3, this);
-        }
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/payload/V4Broadcast.java

@@ -1,59 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity.payload;
-
-import ch.dissem.bitmessage.entity.BitmessageAddress;
-import ch.dissem.bitmessage.entity.Plaintext;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-
-/**
- * Users who are subscribed to the sending address will see the message appear in their inbox.
- * Broadcasts are version 4 or 5.
- */
-public class V4Broadcast extends Broadcast {
-    protected V4Broadcast(long version, long stream, CryptoBox encrypted, Plaintext plaintext) {
-        super(version, stream, encrypted, plaintext);
-    }
-
-    public V4Broadcast(BitmessageAddress senderAddress, Plaintext plaintext) {
-        super(4, senderAddress.getStream(), null, plaintext);
-        if (senderAddress.getVersion() >= 4)
-            throw new IllegalArgumentException("Address version 3 or older expected, but was " + senderAddress.getVersion());
-    }
-
-    public static V4Broadcast read(InputStream in, long stream, int length) throws IOException {
-        return new V4Broadcast(4, stream, CryptoBox.read(in, length), null);
-    }
-
-    @Override
-    public ObjectType getType() {
-        return ObjectType.BROADCAST;
-    }
-
-    @Override
-    public void writeBytesToSign(OutputStream out) throws IOException {
-        plaintext.write(out, false);
-    }
-
-    @Override
-    public void write(OutputStream out) throws IOException {
-        encrypted.write(out);
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/payload/V4Pubkey.java

@@ -1,177 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity.payload;
-
-import ch.dissem.bitmessage.entity.BitmessageAddress;
-import ch.dissem.bitmessage.entity.Encrypted;
-import ch.dissem.bitmessage.exception.DecryptionFailedException;
-import ch.dissem.bitmessage.utils.Decode;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.util.Arrays;
-
-/**
- * A version 4 public key. When version 4 pubkeys are created, most of the data in the pubkey is encrypted. This is
- * done in such a way that only someone who has the Bitmessage address which corresponds to a pubkey can decrypt and
- * use that pubkey. This prevents people from gathering pubkeys sent around the network and using the data from them
- * to create messages to be used in spam or in flooding attacks.
- */
-public class V4Pubkey extends Pubkey implements Encrypted {
-    private long stream;
-    private byte[] tag;
-    private CryptoBox encrypted;
-    private V3Pubkey decrypted;
-
-    private V4Pubkey(long stream, byte[] tag, CryptoBox encrypted) {
-        super(4);
-        this.stream = stream;
-        this.tag = tag;
-        this.encrypted = encrypted;
-    }
-
-    public V4Pubkey(V3Pubkey decrypted) {
-        super(4);
-        this.decrypted = decrypted;
-        this.stream = decrypted.stream;
-        this.tag = BitmessageAddress.calculateTag(4, decrypted.getStream(), decrypted.getRipe());
-    }
-
-    public static V4Pubkey read(InputStream in, long stream, int length, boolean encrypted) throws IOException {
-        if (encrypted)
-            return new V4Pubkey(stream,
-                    Decode.bytes(in, 32),
-                    CryptoBox.read(in, length - 32));
-        else
-            return new V4Pubkey(V3Pubkey.read(in, stream));
-    }
-
-    @Override
-    public void encrypt(byte[] publicKey) throws IOException {
-        if (getSignature() == null) throw new IllegalStateException("Pubkey must be signed before encryption.");
-        this.encrypted = new CryptoBox(decrypted, publicKey);
-    }
-
-    @Override
-    public void decrypt(byte[] privateKey) throws IOException, DecryptionFailedException {
-        decrypted = V3Pubkey.read(encrypted.decrypt(privateKey), stream);
-    }
-
-    @Override
-    public boolean isDecrypted() {
-        return decrypted != null;
-    }
-
-    @Override
-    public void write(OutputStream stream) throws IOException {
-        stream.write(tag);
-        encrypted.write(stream);
-    }
-
-    @Override
-    public void writeUnencrypted(OutputStream out) throws IOException {
-        decrypted.write(out);
-    }
-
-    @Override
-    public void writeBytesToSign(OutputStream out) throws IOException {
-        out.write(tag);
-        decrypted.writeBytesToSign(out);
-    }
-
-    @Override
-    public long getVersion() {
-        return 4;
-    }
-
-    @Override
-    public ObjectType getType() {
-        return ObjectType.PUBKEY;
-    }
-
-    @Override
-    public long getStream() {
-        return stream;
-    }
-
-    public byte[] getTag() {
-        return tag;
-    }
-
-    @Override
-    public byte[] getSigningKey() {
-        return decrypted.getSigningKey();
-    }
-
-    @Override
-    public byte[] getEncryptionKey() {
-        return decrypted.getEncryptionKey();
-    }
-
-    @Override
-    public int getBehaviorBitfield() {
-        return decrypted.getBehaviorBitfield();
-    }
-
-    @Override
-    public byte[] getSignature() {
-        if (decrypted != null)
-            return decrypted.getSignature();
-        else
-            return null;
-    }
-
-    @Override
-    public void setSignature(byte[] signature) {
-        decrypted.setSignature(signature);
-    }
-
-    @Override
-    public boolean isSigned() {
-        return true;
-    }
-
-    public long getNonceTrialsPerByte() {
-        return decrypted.getNonceTrialsPerByte();
-    }
-
-    public long getExtraBytes() {
-        return decrypted.getExtraBytes();
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-
-        V4Pubkey v4Pubkey = (V4Pubkey) o;
-
-        if (stream != v4Pubkey.stream) return false;
-        if (!Arrays.equals(tag, v4Pubkey.tag)) return false;
-        return !(decrypted != null ? !decrypted.equals(v4Pubkey.decrypted) : v4Pubkey.decrypted != null);
-
-    }
-
-    @Override
-    public int hashCode() {
-        int result = (int) (stream ^ (stream >>> 32));
-        result = 31 * result + Arrays.hashCode(tag);
-        result = 31 * result + (decrypted != null ? decrypted.hashCode() : 0);
-        return result;
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/payload/V5Broadcast.java

@@ -1,64 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity.payload;
-
-import ch.dissem.bitmessage.entity.BitmessageAddress;
-import ch.dissem.bitmessage.entity.Plaintext;
-import ch.dissem.bitmessage.utils.Decode;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-
-/**
- * Users who are subscribed to the sending address will see the message appear in their inbox.
- */
-public class V5Broadcast extends V4Broadcast {
-    private byte[] tag;
-
-    private V5Broadcast(long stream, byte[] tag, CryptoBox encrypted) {
-        super(5, stream, encrypted, null);
-        this.tag = tag;
-    }
-
-    public V5Broadcast(BitmessageAddress senderAddress, Plaintext plaintext) {
-        super(5, senderAddress.getStream(), null, plaintext);
-        if (senderAddress.getVersion() < 4)
-            throw new IllegalArgumentException("Address version 4 (or newer) expected, but was " + senderAddress.getVersion());
-        this.tag = senderAddress.getTag();
-    }
-
-    public static V5Broadcast read(InputStream is, long stream, int length) throws IOException {
-        return new V5Broadcast(stream, Decode.bytes(is, 32), CryptoBox.read(is, length - 32));
-    }
-
-    public byte[] getTag() {
-        return tag;
-    }
-
-    @Override
-    public void writeBytesToSign(OutputStream out) throws IOException {
-        out.write(tag);
-        super.writeBytesToSign(out);
-    }
-
-    @Override
-    public void write(OutputStream out) throws IOException {
-        out.write(tag);
-        super.write(out);
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/valueobject/InventoryVector.java

@@ -1,65 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity.valueobject;
-
-import ch.dissem.bitmessage.entity.Streamable;
-import ch.dissem.bitmessage.utils.Strings;
-
-import java.io.IOException;
-import java.io.OutputStream;
-import java.io.Serializable;
-import java.util.Arrays;
-
-public class InventoryVector implements Streamable, Serializable {
-    /**
-     * Hash of the object
-     */
-    private final byte[] hash;
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (!(o instanceof InventoryVector)) return false;
-
-        InventoryVector that = (InventoryVector) o;
-
-        return Arrays.equals(hash, that.hash);
-    }
-
-    @Override
-    public int hashCode() {
-        return hash != null ? Arrays.hashCode(hash) : 0;
-    }
-
-    public byte[] getHash() {
-        return hash;
-    }
-
-    public InventoryVector(byte[] hash) {
-        this.hash = hash;
-    }
-
-    @Override
-    public void write(OutputStream stream) throws IOException {
-        stream.write(hash);
-    }
-
-    @Override
-    public String toString() {
-        return Strings.hex(hash).toString();
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/valueobject/Label.java

@@ -1,87 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity.valueobject;
-
-import java.io.Serializable;
-import java.util.Objects;
-
-public class Label implements Serializable {
-    private Object id;
-    private String label;
-    private Type type;
-    private int color;
-
-    public Label(String label, Type type, int color) {
-        this.label = label;
-        this.type = type;
-        this.color = color;
-    }
-
-    /**
-     * @return RGBA representation for the color.
-     */
-    public int getColor() {
-        return color;
-    }
-
-    /**
-     * @param color RGBA representation for the color.
-     */
-    public void setColor(int color) {
-        this.color = color;
-    }
-
-    @Override
-    public String toString() {
-        return label;
-    }
-
-    public Object getId() {
-        return id;
-    }
-
-    public void setId(Object id) {
-        this.id = id;
-    }
-
-    public Type getType() {
-        return type;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-        Label label1 = (Label) o;
-        return Objects.equals(label, label1.label);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(label);
-    }
-
-    public enum Type {
-        INBOX,
-        BROADCAST,
-        DRAFT,
-        OUTBOX,
-        SENT,
-        UNREAD,
-        TRASH
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/valueobject/NetworkAddress.java

@@ -1,209 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity.valueobject;
-
-import ch.dissem.bitmessage.entity.Streamable;
-import ch.dissem.bitmessage.utils.Encode;
-import ch.dissem.bitmessage.utils.UnixTime;
-
-import java.io.IOException;
-import java.io.OutputStream;
-import java.net.InetAddress;
-import java.net.UnknownHostException;
-import java.util.Arrays;
-
-/**
- * A node's address. It's written in IPv6 format.
- */
-public class NetworkAddress implements Streamable {
-    private long time;
-
-    /**
-     * Stream number for this node
-     */
-    private long stream;
-
-    /**
-     * same service(s) listed in version
-     */
-    private long services;
-
-    /**
-     * IPv6 address. IPv4 addresses are written into the message as a 16 byte IPv4-mapped IPv6 address
-     * (12 bytes 00 00 00 00 00 00 00 00 00 00 FF FF, followed by the 4 bytes of the IPv4 address).
-     */
-    private byte[] ipv6;
-    private int port;
-
-    private NetworkAddress(Builder builder) {
-        time = builder.time;
-        stream = builder.stream;
-        services = builder.services;
-        ipv6 = builder.ipv6;
-        port = builder.port;
-    }
-
-    public byte[] getIPv6() {
-        return ipv6;
-    }
-
-    public int getPort() {
-        return port;
-    }
-
-    public long getServices() {
-        return services;
-    }
-
-    public long getStream() {
-        return stream;
-    }
-
-    public long getTime() {
-        return time;
-    }
-
-    public void setTime(long time) {
-        this.time = time;
-    }
-
-    public InetAddress toInetAddress() {
-        try {
-            return InetAddress.getByAddress(ipv6);
-        } catch (UnknownHostException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-
-        NetworkAddress that = (NetworkAddress) o;
-
-        return port == that.port && Arrays.equals(ipv6, that.ipv6);
-    }
-
-    @Override
-    public int hashCode() {
-        int result = ipv6 != null ? Arrays.hashCode(ipv6) : 0;
-        result = 31 * result + port;
-        return result;
-    }
-
-    @Override
-    public String toString() {
-        return "[" + toInetAddress() + "]:" + port;
-    }
-
-    @Override
-    public void write(OutputStream stream) throws IOException {
-        write(stream, false);
-    }
-
-    public void write(OutputStream stream, boolean light) throws IOException {
-        if (!light) {
-            Encode.int64(time, stream);
-            Encode.int32(this.stream, stream);
-        }
-        Encode.int64(services, stream);
-        stream.write(ipv6);
-        Encode.int16(port, stream);
-    }
-
-    public static final class Builder {
-        private long time;
-        private long stream;
-        private long services = 1;
-        private byte[] ipv6;
-        private int port;
-
-        public Builder() {
-        }
-
-        public Builder time(final long time) {
-            this.time = time;
-            return this;
-        }
-
-        public Builder stream(final long stream) {
-            this.stream = stream;
-            return this;
-        }
-
-        public Builder services(final long services) {
-            this.services = services;
-            return this;
-        }
-
-        public Builder ip(InetAddress inetAddress) {
-            byte[] addr = inetAddress.getAddress();
-            if (addr.length == 16) {
-                this.ipv6 = addr;
-            } else if (addr.length == 4) {
-                this.ipv6 = new byte[16];
-                this.ipv6[10] = (byte) 0xff;
-                this.ipv6[11] = (byte) 0xff;
-                System.arraycopy(addr, 0, this.ipv6, 12, 4);
-            } else {
-                throw new IllegalArgumentException("Weird address " + inetAddress);
-            }
-            return this;
-        }
-
-        public Builder ipv6(byte[] ipv6) {
-            this.ipv6 = ipv6;
-            return this;
-        }
-
-        public Builder ipv6(int p00, int p01, int p02, int p03,
-                            int p04, int p05, int p06, int p07,
-                            int p08, int p09, int p10, int p11,
-                            int p12, int p13, int p14, int p15) {
-            this.ipv6 = new byte[]{
-                    (byte) p00, (byte) p01, (byte) p02, (byte) p03,
-                    (byte) p04, (byte) p05, (byte) p06, (byte) p07,
-                    (byte) p08, (byte) p09, (byte) p10, (byte) p11,
-                    (byte) p12, (byte) p13, (byte) p14, (byte) p15
-            };
-            return this;
-        }
-
-        public Builder ipv4(int p00, int p01, int p02, int p03) {
-            this.ipv6 = new byte[]{
-                    (byte) 0, (byte) 0, (byte) 0x00, (byte) 0x00,
-                    (byte) 0, (byte) 0, (byte) 0x00, (byte) 0x00,
-                    (byte) 0, (byte) 0, (byte) 0xff, (byte) 0xff,
-                    (byte) p00, (byte) p01, (byte) p02, (byte) p03
-            };
-            return this;
-        }
-
-        public Builder port(final int port) {
-            this.port = port;
-            return this;
-        }
-
-        public NetworkAddress build() {
-            if (time == 0) {
-                time = UnixTime.now();
-            }
-            return new NetworkAddress(this);
-        }
-    }
-}

core/src/main/java/ch/dissem/bitmessage/entity/valueobject/PrivateKey.java

@@ -1,115 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity.valueobject;
-
-import ch.dissem.bitmessage.entity.Streamable;
-import ch.dissem.bitmessage.entity.payload.Pubkey;
-import ch.dissem.bitmessage.factory.Factory;
-import ch.dissem.bitmessage.utils.Bytes;
-import ch.dissem.bitmessage.utils.Decode;
-import ch.dissem.bitmessage.utils.Encode;
-
-import java.io.*;
-
-import static ch.dissem.bitmessage.utils.Singleton.security;
-
-/**
- * Represents a private key. Additional information (stream, version, features, ...) is stored in the accompanying
- * {@link Pubkey} object.
- */
-public class PrivateKey implements Streamable {
-    public static final int PRIVATE_KEY_SIZE = 32;
-    private final byte[] privateSigningKey;
-    private final byte[] privateEncryptionKey;
-
-    private final Pubkey pubkey;
-
-    public PrivateKey(boolean shorter, long stream, long nonceTrialsPerByte, long extraBytes, Pubkey.Feature... features) {
-        byte[] privSK;
-        byte[] pubSK;
-        byte[] privEK;
-        byte[] pubEK;
-        byte[] ripe;
-        do {
-            privSK = security().randomBytes(PRIVATE_KEY_SIZE);
-            privEK = security().randomBytes(PRIVATE_KEY_SIZE);
-            pubSK = security().createPublicKey(privSK);
-            pubEK = security().createPublicKey(privEK);
-            ripe = Pubkey.getRipe(pubSK, pubEK);
-        } while (ripe[0] != 0 || (shorter && ripe[1] != 0));
-        this.privateSigningKey = privSK;
-        this.privateEncryptionKey = privEK;
-        this.pubkey = security().createPubkey(Pubkey.LATEST_VERSION, stream, privateSigningKey, privateEncryptionKey,
-                nonceTrialsPerByte, extraBytes, features);
-    }
-
-    public PrivateKey(byte[] privateSigningKey, byte[] privateEncryptionKey, Pubkey pubkey) {
-        this.privateSigningKey = privateSigningKey;
-        this.privateEncryptionKey = privateEncryptionKey;
-        this.pubkey = pubkey;
-    }
-
-    public PrivateKey(long version, long stream, String passphrase, long nonceTrialsPerByte, long extraBytes, Pubkey.Feature... features) {
-        try {
-            // FIXME: this is most definitely wrong
-            this.privateSigningKey = Bytes.truncate(security().sha512(passphrase.getBytes("UTF-8"), new byte[]{0}), 32);
-            this.privateEncryptionKey = Bytes.truncate(security().sha512(passphrase.getBytes("UTF-8"), new byte[]{1}), 32);
-            this.pubkey = security().createPubkey(version, stream, privateSigningKey, privateEncryptionKey,
-                    nonceTrialsPerByte, extraBytes, features);
-        } catch (UnsupportedEncodingException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    public static PrivateKey read(InputStream is) throws IOException {
-        int version = (int) Decode.varInt(is);
-        long stream = Decode.varInt(is);
-        int len = (int) Decode.varInt(is);
-        Pubkey pubkey = Factory.readPubkey(version, stream, is, len, false);
-        len = (int) Decode.varInt(is);
-        byte[] signingKey = Decode.bytes(is, len);
-        len = (int) Decode.varInt(is);
-        byte[] encryptionKey = Decode.bytes(is, len);
-        return new PrivateKey(signingKey, encryptionKey, pubkey);
-    }
-
-    public byte[] getPrivateSigningKey() {
-        return privateSigningKey;
-    }
-
-    public byte[] getPrivateEncryptionKey() {
-        return privateEncryptionKey;
-    }
-
-    public Pubkey getPubkey() {
-        return pubkey;
-    }
-
-    @Override
-    public void write(OutputStream out) throws IOException {
-        Encode.varInt(pubkey.getVersion(), out);
-        Encode.varInt(pubkey.getStream(), out);
-        ByteArrayOutputStream baos = new ByteArrayOutputStream();
-        pubkey.writeUnencrypted(baos);
-        Encode.varInt(baos.size(), out);
-        out.write(baos.toByteArray());
-        Encode.varInt(privateSigningKey.length, out);
-        out.write(privateSigningKey);
-        Encode.varInt(privateEncryptionKey.length, out);
-        out.write(privateEncryptionKey);
-    }
-}

core/src/main/java/ch/dissem/bitmessage/exception/AddressFormatException.java

@@ -1,26 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.exception;
-
-/**
- * Indicates an illegal Bitmessage address
- */
-public class AddressFormatException extends RuntimeException {
-    public AddressFormatException(String message) {
-        super(message);
-    }
-}

core/src/main/java/ch/dissem/bitmessage/exception/DecryptionFailedException.java

@@ -1,20 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.exception;
-
-public class DecryptionFailedException extends Exception {
-}

core/src/main/java/ch/dissem/bitmessage/exception/InsufficientProofOfWorkException.java

@@ -1,28 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.exception;
-
-import ch.dissem.bitmessage.utils.Strings;
-
-import java.io.IOException;
-import java.util.Arrays;
-
-public class InsufficientProofOfWorkException extends IOException {
-    public InsufficientProofOfWorkException(byte[] target, byte[] hash) {
-        super("Insufficient proof of work: " + Strings.hex(target) + " required, " + Strings.hex(Arrays.copyOfRange(hash, 0, 8)) + " achieved.");
-    }
-}

core/src/main/java/ch/dissem/bitmessage/exception/NodeException.java

@@ -1,32 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.exception;
-
-/**
- * An exception on the node that's severe enough to cause the client to disconnect this node.
- *
- * @author Ch. Basler
- */
-public class NodeException extends RuntimeException {
-    public NodeException(String message) {
-        super(message);
-    }
-
-    public NodeException(String message, Throwable cause) {
-        super(message, cause);
-    }
-}

core/src/main/java/ch/dissem/bitmessage/factory/Factory.java

@@ -1,206 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.factory;
-
-import ch.dissem.bitmessage.entity.BitmessageAddress;
-import ch.dissem.bitmessage.entity.NetworkMessage;
-import ch.dissem.bitmessage.entity.ObjectMessage;
-import ch.dissem.bitmessage.entity.Plaintext;
-import ch.dissem.bitmessage.entity.payload.*;
-import ch.dissem.bitmessage.entity.valueobject.PrivateKey;
-import ch.dissem.bitmessage.exception.NodeException;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.net.SocketException;
-import java.net.SocketTimeoutException;
-
-import static ch.dissem.bitmessage.utils.Singleton.security;
-
-/**
- * Creates {@link NetworkMessage} objects from {@link InputStream InputStreams}
- */
-public class Factory {
-    public static final Logger LOG = LoggerFactory.getLogger(Factory.class);
-
-    public static NetworkMessage getNetworkMessage(int version, InputStream stream) throws SocketTimeoutException {
-        try {
-            return V3MessageFactory.read(stream);
-        } catch (SocketTimeoutException | NodeException e) {
-            throw e;
-        } catch (SocketException e) {
-            throw new NodeException(e.getMessage(), e);
-        } catch (Exception e) {
-            LOG.error(e.getMessage(), e);
-            return null;
-        }
-    }
-
-    public static ObjectMessage getObjectMessage(int version, InputStream stream, int length) {
-        try {
-            return V3MessageFactory.readObject(stream, length);
-        } catch (IOException e) {
-            LOG.error(e.getMessage(), e);
-            return null;
-        }
-    }
-
-    public static Pubkey createPubkey(long version, long stream, byte[] publicSigningKey, byte[] publicEncryptionKey,
-                                      long nonceTrialsPerByte, long extraBytes, Pubkey.Feature... features) {
-        return createPubkey(version, stream, publicSigningKey, publicEncryptionKey, nonceTrialsPerByte, extraBytes,
-                Pubkey.Feature.bitfield(features));
-    }
-
-    public static Pubkey createPubkey(long version, long stream, byte[] publicSigningKey, byte[] publicEncryptionKey,
-                                      long nonceTrialsPerByte, long extraBytes, int behaviourBitfield) {
-        if (publicSigningKey.length != 64 && publicSigningKey.length != 65)
-            throw new IllegalArgumentException("64 bytes signing key expected, but it was "
-                    + publicSigningKey.length + " bytes long.");
-        if (publicEncryptionKey.length != 64 && publicEncryptionKey.length != 65)
-            throw new IllegalArgumentException("64 bytes encryption key expected, but it was "
-                    + publicEncryptionKey.length + " bytes long.");
-
-        switch ((int) version) {
-            case 2:
-                return new V2Pubkey.Builder()
-                        .stream(stream)
-                        .publicSigningKey(publicSigningKey)
-                        .publicEncryptionKey(publicEncryptionKey)
-                        .behaviorBitfield(behaviourBitfield)
-                        .build();
-            case 3:
-                return new V3Pubkey.Builder()
-                        .stream(stream)
-                        .publicSigningKey(publicSigningKey)
-                        .publicEncryptionKey(publicEncryptionKey)
-                        .behaviorBitfield(behaviourBitfield)
-                        .nonceTrialsPerByte(nonceTrialsPerByte)
-                        .extraBytes(extraBytes)
-                        .build();
-            case 4:
-                return new V4Pubkey(
-                        new V3Pubkey.Builder()
-                                .stream(stream)
-                                .publicSigningKey(publicSigningKey)
-                                .publicEncryptionKey(publicEncryptionKey)
-                                .behaviorBitfield(behaviourBitfield)
-                                .nonceTrialsPerByte(nonceTrialsPerByte)
-                                .extraBytes(extraBytes)
-                                .build()
-                );
-            default:
-                throw new IllegalArgumentException("Unexpected pubkey version " + version);
-        }
-    }
-
-    public static BitmessageAddress createIdentityFromPrivateKey(String address,
-                                                                 byte[] privateSigningKey, byte[] privateEncryptionKey,
-                                                                 long nonceTrialsPerByte, long extraBytes,
-                                                                 int behaviourBitfield) {
-        BitmessageAddress temp = new BitmessageAddress(address);
-        PrivateKey privateKey = new PrivateKey(privateSigningKey, privateEncryptionKey,
-                createPubkey(temp.getVersion(), temp.getStream(),
-                        security().createPublicKey(privateSigningKey),
-                        security().createPublicKey(privateEncryptionKey),
-                        nonceTrialsPerByte, extraBytes, behaviourBitfield));
-        BitmessageAddress result = new BitmessageAddress(privateKey);
-        if (!result.getAddress().equals(address)) {
-            throw new IllegalArgumentException("Address not matching private key. Address: " + address
-                    + "; Address derived from private key: " + result.getAddress());
-        }
-        return result;
-    }
-
-    public static BitmessageAddress generatePrivateAddress(boolean shorter,
-                                                           long stream,
-                                                           Pubkey.Feature... features) {
-        return new BitmessageAddress(new PrivateKey(shorter, stream, 1000, 1000, features));
-    }
-
-    static ObjectPayload getObjectPayload(long objectType,
-                                          long version,
-                                          long streamNumber,
-                                          InputStream stream,
-                                          int length) throws IOException {
-        ObjectType type = ObjectType.fromNumber(objectType);
-        if (type != null) {
-            switch (type) {
-                case GET_PUBKEY:
-                    return parseGetPubkey(version, streamNumber, stream, length);
-                case PUBKEY:
-                    return parsePubkey(version, streamNumber, stream, length);
-                case MSG:
-                    return parseMsg(version, streamNumber, stream, length);
-                case BROADCAST:
-                    return parseBroadcast(version, streamNumber, stream, length);
-                default:
-                    LOG.error("This should not happen, someone broke something in the code!");
-            }
-        }
-        // fallback: just store the message - we don't really care what it is
-        LOG.trace("Unexpected object type: " + objectType);
-        return GenericPayload.read(version, stream, streamNumber, length);
-    }
-
-    private static ObjectPayload parseGetPubkey(long version, long streamNumber, InputStream stream, int length) throws IOException {
-        return GetPubkey.read(stream, streamNumber, length, version);
-    }
-
-    public static Pubkey readPubkey(long version, long stream, InputStream is, int length, boolean encrypted) throws IOException {
-        switch ((int) version) {
-            case 2:
-                return V2Pubkey.read(is, stream);
-            case 3:
-                return V3Pubkey.read(is, stream);
-            case 4:
-                return V4Pubkey.read(is, stream, length, encrypted);
-        }
-        LOG.debug("Unexpected pubkey version " + version + ", handling as generic payload object");
-        return null;
-    }
-
-    private static ObjectPayload parsePubkey(long version, long streamNumber, InputStream stream, int length) throws IOException {
-        Pubkey pubkey = readPubkey(version, streamNumber, stream, length, true);
-        return pubkey != null ? pubkey : GenericPayload.read(version, stream, streamNumber, length);
-    }
-
-    private static ObjectPayload parseMsg(long version, long streamNumber, InputStream stream, int length) throws IOException {
-        return Msg.read(stream, streamNumber, length);
-    }
-
-    private static ObjectPayload parseBroadcast(long version, long streamNumber, InputStream stream, int length) throws IOException {
-        switch ((int) version) {
-            case 4:
-                return V4Broadcast.read(stream, streamNumber, length);
-            case 5:
-                return V5Broadcast.read(stream, streamNumber, length);
-            default:
-                LOG.debug("Encountered unknown broadcast version " + version);
-                return GenericPayload.read(version, stream, streamNumber, length);
-        }
-    }
-
-    public static ObjectPayload getBroadcast(BitmessageAddress sendingAddress, Plaintext plaintext) {
-        if (sendingAddress.getVersion() < 4) {
-            return new V4Broadcast(sendingAddress, plaintext);
-        } else {
-            return new V5Broadcast(sendingAddress, plaintext);
-        }
-    }
-}

core/src/main/java/ch/dissem/bitmessage/factory/V3MessageFactory.java

@@ -1,226 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.factory;
-
-import ch.dissem.bitmessage.entity.*;
-import ch.dissem.bitmessage.entity.payload.GenericPayload;
-import ch.dissem.bitmessage.entity.payload.ObjectPayload;
-import ch.dissem.bitmessage.entity.valueobject.InventoryVector;
-import ch.dissem.bitmessage.entity.valueobject.NetworkAddress;
-import ch.dissem.bitmessage.exception.NodeException;
-import ch.dissem.bitmessage.utils.AccessCounter;
-import ch.dissem.bitmessage.utils.Decode;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import java.io.ByteArrayInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-
-import static ch.dissem.bitmessage.entity.NetworkMessage.MAGIC_BYTES;
-import static ch.dissem.bitmessage.utils.Singleton.security;
-
-/**
- * Creates protocol v3 network messages from {@link InputStream InputStreams}
- */
-class V3MessageFactory {
-    private static Logger LOG = LoggerFactory.getLogger(V3MessageFactory.class);
-
-    public static NetworkMessage read(InputStream in) throws IOException {
-        findMagic(in);
-        String command = getCommand(in);
-        int length = (int) Decode.uint32(in);
-        if (length > 1600003) {
-            throw new NodeException("Payload of " + length + " bytes received, no more than 1600003 was expected.");
-        }
-        byte[] checksum = Decode.bytes(in, 4);
-
-        byte[] payloadBytes = Decode.bytes(in, length);
-
-        if (testChecksum(checksum, payloadBytes)) {
-            MessagePayload payload = getPayload(command, new ByteArrayInputStream(payloadBytes), length);
-            if (payload != null)
-                return new NetworkMessage(payload);
-            else
-                return null;
-        } else {
-            throw new IOException("Checksum failed for message '" + command + "'");
-        }
-    }
-
-    private static MessagePayload getPayload(String command, InputStream stream, int length) throws IOException {
-        switch (command) {
-            case "version":
-                return parseVersion(stream);
-            case "verack":
-                return new VerAck();
-            case "addr":
-                return parseAddr(stream);
-            case "inv":
-                return parseInv(stream);
-            case "getdata":
-                return parseGetData(stream);
-            case "object":
-                return readObject(stream, length);
-            case "custom":
-                return readCustom(stream, length);
-            default:
-                LOG.debug("Unknown command: " + command);
-                return null;
-        }
-    }
-
-    private static MessagePayload readCustom(InputStream in, int length) throws IOException {
-        return CustomMessage.read(in, length);
-    }
-
-    public static ObjectMessage readObject(InputStream in, int length) throws IOException {
-        AccessCounter counter = new AccessCounter();
-        byte nonce[] = Decode.bytes(in, 8, counter);
-        long expiresTime = Decode.int64(in, counter);
-        long objectType = Decode.uint32(in, counter);
-        long version = Decode.varInt(in, counter);
-        long stream = Decode.varInt(in, counter);
-
-        byte[] data = Decode.bytes(in, length - counter.length());
-        ObjectPayload payload;
-        try {
-            ByteArrayInputStream dataStream = new ByteArrayInputStream(data);
-            payload = Factory.getObjectPayload(objectType, version, stream, dataStream, data.length);
-        } catch (Exception e) {
-            LOG.trace("Could not parse object payload - using generic payload instead", e);
-            payload = new GenericPayload(version, stream, data);
-        }
-
-        return new ObjectMessage.Builder()
-                .nonce(nonce)
-                .expiresTime(expiresTime)
-                .objectType(objectType)
-                .stream(stream)
-                .payload(payload)
-                .build();
-    }
-
-    private static GetData parseGetData(InputStream stream) throws IOException {
-        long count = Decode.varInt(stream);
-        GetData.Builder builder = new GetData.Builder();
-        for (int i = 0; i < count; i++) {
-            builder.addInventoryVector(parseInventoryVector(stream));
-        }
-        return builder.build();
-    }
-
-    private static Inv parseInv(InputStream stream) throws IOException {
-        long count = Decode.varInt(stream);
-        Inv.Builder builder = new Inv.Builder();
-        for (int i = 0; i < count; i++) {
-            builder.addInventoryVector(parseInventoryVector(stream));
-        }
-        return builder.build();
-    }
-
-    private static Addr parseAddr(InputStream stream) throws IOException {
-        long count = Decode.varInt(stream);
-        Addr.Builder builder = new Addr.Builder();
-        for (int i = 0; i < count; i++) {
-            builder.addAddress(parseAddress(stream, false));
-        }
-        return builder.build();
-    }
-
-    private static Version parseVersion(InputStream stream) throws IOException {
-        int version = Decode.int32(stream);
-        long services = Decode.int64(stream);
-        long timestamp = Decode.int64(stream);
-        NetworkAddress addrRecv = parseAddress(stream, true);
-        NetworkAddress addrFrom = parseAddress(stream, true);
-        long nonce = Decode.int64(stream);
-        String userAgent = Decode.varString(stream);
-        long[] streamNumbers = Decode.varIntList(stream);
-
-        return new Version.Builder()
-                .version(version)
-                .services(services)
-                .timestamp(timestamp)
-                .addrRecv(addrRecv).addrFrom(addrFrom)
-                .nonce(nonce)
-                .userAgent(userAgent)
-                .streams(streamNumbers).build();
-    }
-
-    private static InventoryVector parseInventoryVector(InputStream stream) throws IOException {
-        return new InventoryVector(Decode.bytes(stream, 32));
-    }
-
-    private static NetworkAddress parseAddress(InputStream stream, boolean light) throws IOException {
-        long time;
-        long streamNumber;
-        if (!light) {
-            time = Decode.int64(stream);
-            streamNumber = Decode.uint32(stream); // This isn't consistent, not sure if this is correct
-        } else {
-            time = 0;
-            streamNumber = 0;
-        }
-        long services = Decode.int64(stream);
-        byte[] ipv6 = Decode.bytes(stream, 16);
-        int port = Decode.uint16(stream);
-        return new NetworkAddress.Builder().time(time).stream(streamNumber).services(services).ipv6(ipv6).port(port).build();
-    }
-
-    private static boolean testChecksum(byte[] checksum, byte[] payload) {
-        byte[] payloadChecksum = security().sha512(payload);
-        for (int i = 0; i < checksum.length; i++) {
-            if (checksum[i] != payloadChecksum[i]) {
-                return false;
-            }
-        }
-        return true;
-    }
-
-    private static String getCommand(InputStream stream) throws IOException {
-        byte[] bytes = new byte[12];
-        int end = bytes.length;
-        for (int i = 0; i < bytes.length; i++) {
-            bytes[i] = (byte) stream.read();
-            if (end == bytes.length) {
-                if (bytes[i] == 0) end = i;
-            } else {
-                if (bytes[i] != 0) throw new IOException("'\\0' padding expected for command");
-            }
-        }
-        return new String(bytes, 0, end, "ASCII");
-    }
-
-    private static void findMagic(InputStream in) throws IOException {
-        int pos = 0;
-        for (int i = 0; i < 1620000; i++) {
-            byte b = (byte) in.read();
-            if (b == MAGIC_BYTES[pos]) {
-                if (pos + 1 == MAGIC_BYTES.length) {
-                    return;
-                }
-            } else if (pos > 0 && b == MAGIC_BYTES[0]) {
-                pos = 1;
-            } else {
-                pos = 0;
-            }
-            pos++;
-        }
-        throw new NodeException("Failed to find MAGIC bytes in stream");
-    }
-}

core/src/main/java/ch/dissem/bitmessage/ports/AbstractCryptography.java

@@ -1,183 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.ports;
-
-import ch.dissem.bitmessage.InternalContext;
-import ch.dissem.bitmessage.entity.ObjectMessage;
-import ch.dissem.bitmessage.entity.payload.Pubkey;
-import ch.dissem.bitmessage.exception.InsufficientProofOfWorkException;
-import ch.dissem.bitmessage.factory.Factory;
-import ch.dissem.bitmessage.utils.Bytes;
-import ch.dissem.bitmessage.utils.UnixTime;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import javax.crypto.Mac;
-import javax.crypto.spec.SecretKeySpec;
-import java.io.IOException;
-import java.math.BigInteger;
-import java.security.GeneralSecurityException;
-import java.security.MessageDigest;
-import java.security.SecureRandom;
-
-import static ch.dissem.bitmessage.utils.Numbers.max;
-
-/**
- * Implements everything that isn't directly dependent on either Spongy- or Bouncycastle.
- */
-public abstract class AbstractCryptography implements Cryptography, InternalContext.ContextHolder {
-    public static final Logger LOG = LoggerFactory.getLogger(Cryptography.class);
-    private static final SecureRandom RANDOM = new SecureRandom();
-    private static final BigInteger TWO = BigInteger.valueOf(2);
-    private static final BigInteger TWO_POW_64 = TWO.pow(64);
-    private static final BigInteger TWO_POW_16 = TWO.pow(16);
-
-    private final String provider;
-    private InternalContext context;
-
-    protected AbstractCryptography(String provider) {
-        this.provider = provider;
-    }
-
-    @Override
-    public void setContext(InternalContext context) {
-        this.context = context;
-    }
-
-    public byte[] sha512(byte[]... data) {
-        return hash("SHA-512", data);
-    }
-
-    public byte[] doubleSha512(byte[]... data) {
-        MessageDigest mda = md("SHA-512");
-        for (byte[] d : data) {
-            mda.update(d);
-        }
-        return mda.digest(mda.digest());
-    }
-
-    public byte[] doubleSha512(byte[] data, int length) {
-        MessageDigest mda = md("SHA-512");
-        mda.update(data, 0, length);
-        return mda.digest(mda.digest());
-    }
-
-    public byte[] ripemd160(byte[]... data) {
-        return hash("RIPEMD160", data);
-    }
-
-    public byte[] doubleSha256(byte[] data, int length) {
-        MessageDigest mda = md("SHA-256");
-        mda.update(data, 0, length);
-        return mda.digest(mda.digest());
-    }
-
-    public byte[] sha1(byte[]... data) {
-        return hash("SHA-1", data);
-    }
-
-    public byte[] randomBytes(int length) {
-        byte[] result = new byte[length];
-        RANDOM.nextBytes(result);
-        return result;
-    }
-
-    public void doProofOfWork(ObjectMessage object, long nonceTrialsPerByte,
-                              long extraBytes, ProofOfWorkEngine.Callback callback) {
-        nonceTrialsPerByte = max(nonceTrialsPerByte, context.getNetworkNonceTrialsPerByte());
-        extraBytes = max(extraBytes, context.getNetworkExtraBytes());
-
-        byte[] initialHash = getInitialHash(object);
-
-        byte[] target = getProofOfWorkTarget(object, nonceTrialsPerByte, extraBytes);
-
-        context.getProofOfWorkEngine().calculateNonce(initialHash, target, callback);
-    }
-
-    public void checkProofOfWork(ObjectMessage object, long nonceTrialsPerByte, long extraBytes)
-            throws IOException {
-        byte[] target = getProofOfWorkTarget(object, nonceTrialsPerByte, extraBytes);
-        byte[] value = doubleSha512(object.getNonce(), getInitialHash(object));
-        if (Bytes.lt(target, value, 8)) {
-            throw new InsufficientProofOfWorkException(target, value);
-        }
-    }
-
-    @Override
-    public byte[] getInitialHash(ObjectMessage object) {
-        return sha512(object.getPayloadBytesWithoutNonce());
-    }
-
-    @Override
-    public byte[] getProofOfWorkTarget(ObjectMessage object, long nonceTrialsPerByte, long extraBytes) {
-        if (nonceTrialsPerByte == 0) nonceTrialsPerByte = context.getNetworkNonceTrialsPerByte();
-        if (extraBytes == 0) extraBytes = context.getNetworkExtraBytes();
-
-        BigInteger TTL = BigInteger.valueOf(object.getExpiresTime() - UnixTime.now());
-        BigInteger numerator = TWO_POW_64;
-        BigInteger powLength = BigInteger.valueOf(object.getPayloadBytesWithoutNonce().length + extraBytes);
-        BigInteger denominator = BigInteger.valueOf(nonceTrialsPerByte)
-                .multiply(
-                        powLength.add(
-                                powLength.multiply(TTL).divide(TWO_POW_16)
-                        )
-                );
-        return Bytes.expand(numerator.divide(denominator).toByteArray(), 8);
-    }
-
-    private byte[] hash(String algorithm, byte[]... data) {
-        MessageDigest mda = md(algorithm);
-        for (byte[] d : data) {
-            mda.update(d);
-        }
-        return mda.digest();
-    }
-
-    private MessageDigest md(String algorithm) {
-        try {
-            return MessageDigest.getInstance(algorithm, provider);
-        } catch (GeneralSecurityException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    public byte[] mac(byte[] key_m, byte[] data) {
-        try {
-            Mac mac = Mac.getInstance("HmacSHA256", provider);
-            mac.init(new SecretKeySpec(key_m, "HmacSHA256"));
-            return mac.doFinal(data);
-        } catch (GeneralSecurityException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    public Pubkey createPubkey(long version, long stream, byte[] privateSigningKey, byte[] privateEncryptionKey,
-                               long nonceTrialsPerByte, long extraBytes, Pubkey.Feature... features) {
-        return Factory.createPubkey(version, stream,
-                createPublicKey(privateSigningKey),
-                createPublicKey(privateEncryptionKey),
-                nonceTrialsPerByte, extraBytes, features);
-    }
-
-    public BigInteger keyToBigInt(byte[] privateKey) {
-        return new BigInteger(1, privateKey);
-    }
-
-    public long randomNonce() {
-        return RANDOM.nextLong();
-    }
-}

core/src/main/java/ch/dissem/bitmessage/ports/AddressRepository.java

@@ -1,47 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.ports;
-
-import ch.dissem.bitmessage.entity.BitmessageAddress;
-
-import java.util.List;
-
-public interface AddressRepository {
-    BitmessageAddress findContact(byte[] ripeOrTag);
-
-    BitmessageAddress findIdentity(byte[] ripeOrTag);
-
-    /**
-     * @return all Bitmessage addresses that belong to this user, i.e. have a private key.
-     */
-    List<BitmessageAddress> getIdentities();
-
-    List<BitmessageAddress> getSubscriptions();
-
-    List<BitmessageAddress> getSubscriptions(long broadcastVersion);
-
-    /**
-     * @return all Bitmessage addresses that have no private key.
-     */
-    List<BitmessageAddress> getContacts();
-
-    void save(BitmessageAddress address);
-
-    void remove(BitmessageAddress address);
-
-    BitmessageAddress getAddress(String address);
-}

core/src/main/java/ch/dissem/bitmessage/ports/Cryptography.java

@@ -1,210 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License. 
- */
-
-package ch.dissem.bitmessage.ports;
-
-import ch.dissem.bitmessage.entity.ObjectMessage;
-import ch.dissem.bitmessage.entity.payload.Pubkey;
-import ch.dissem.bitmessage.exception.InsufficientProofOfWorkException;
-
-import java.io.IOException;
-import java.math.BigInteger;
-import java.security.MessageDigest;
-import java.security.SecureRandom;
-
-/**
- * Provides some methods to help with hashing and encryption. All randoms are created using {@link SecureRandom},
- * which should be secure enough.
- */
-public interface Cryptography {
-    /**
-     * A helper method to calculate SHA-512 hashes. Please note that a new {@link MessageDigest} object is created at
-     * each call (to ensure thread safety), so you shouldn't use this if you need to do many hash calculations in
-     * success on the same thread.
-     *
-     * @param data to get hashed
-     * @return SHA-512 hash of data
-     */
-    byte[] sha512(byte[]... data);
-
-    /**
-     * A helper method to calculate doubleSHA-512 hashes. Please note that a new {@link MessageDigest} object is created
-     * at each call (to ensure thread safety), so you shouldn't use this if you need to do many hash calculations in
-     * success on the same thread.
-     *
-     * @param data to get hashed
-     * @return SHA-512 hash of data
-     */
-    byte[] doubleSha512(byte[]... data);
-
-    /**
-     * A helper method to calculate double SHA-512 hashes. This method allows to only use a part of the available bytes
-     * to use for the hash calculation.
-     * <p>
-     * Please note that a new {@link MessageDigest} object is created at each call (to ensure thread safety), so you
-     * shouldn't use this if you need to do many hash calculations in short order on the same thread.
-     * </p>
-     *
-     * @param data   to get hashed
-     * @param length number of bytes to be taken into account
-     * @return SHA-512 hash of data
-     */
-    byte[] doubleSha512(byte[] data, int length);
-
-    /**
-     * A helper method to calculate RIPEMD-160 hashes. Supplying multiple byte arrays has the same result as a
-     * concatenation of all arrays, but might perform better.
-     * <p>
-     * Please note that a new {@link MessageDigest} object is created at
-     * each call (to ensure thread safety), so you shouldn't use this if you need to do many hash calculations in short
-     * order on the same thread.
-     * </p>
-     *
-     * @param data to get hashed
-     * @return RIPEMD-160 hash of data
-     */
-    byte[] ripemd160(byte[]... data);
-
-    /**
-     * A helper method to calculate double SHA-256 hashes. This method allows to only use a part of the available bytes
-     * to use for the hash calculation.
-     * <p>
-     * Please note that a new {@link MessageDigest} object is created at
-     * each call (to ensure thread safety), so you shouldn't use this if you need to do many hash calculations in short
-     * order on the same thread.
-     * </p>
-     *
-     * @param data   to get hashed
-     * @param length number of bytes to be taken into account
-     * @return SHA-256 hash of data
-     */
-    byte[] doubleSha256(byte[] data, int length);
-
-    /**
-     * A helper method to calculate SHA-1 hashes. Supplying multiple byte arrays has the same result as a
-     * concatenation of all arrays, but might perform better.
-     * <p>
-     * Please note that a new {@link MessageDigest} object is created at
-     * each call (to ensure thread safety), so you shouldn't use this if you need to do many hash calculations in short
-     * order on the same thread.
-     * </p>
-     *
-     * @param data to get hashed
-     * @return SHA hash of data
-     */
-    byte[] sha1(byte[]... data);
-
-    /**
-     * @param length number of bytes to return
-     * @return an array of the given size containing random bytes
-     */
-    byte[] randomBytes(int length);
-
-    /**
-     * Calculates the proof of work. This might take a long time, depending on the hardware, message size and time to
-     * live.
-     *
-     * @param object             to do the proof of work for
-     * @param nonceTrialsPerByte difficulty
-     * @param extraBytes         bytes to add to the object size (makes it more difficult to send small messages)
-     * @param callback           to handle nonce once it's calculated
-     */
-    void doProofOfWork(ObjectMessage object, long nonceTrialsPerByte,
-                       long extraBytes, ProofOfWorkEngine.Callback callback);
-
-    /**
-     * @param object             to be checked
-     * @param nonceTrialsPerByte difficulty
-     * @param extraBytes         bytes to add to the object size
-     * @throws InsufficientProofOfWorkException if proof of work doesn't check out (makes it more difficult to send small messages)
-     */
-    void checkProofOfWork(ObjectMessage object, long nonceTrialsPerByte, long extraBytes)
-            throws IOException;
-
-    byte[] getInitialHash(ObjectMessage object);
-
-    byte[] getProofOfWorkTarget(ObjectMessage object, long nonceTrialsPerByte, long extraBytes);
-
-    /**
-     * Calculates the MAC for a message (data)
-     *
-     * @param key_m the symmetric key used
-     * @param data  the message data to calculate the MAC for
-     * @return the MAC
-     */
-    byte[] mac(byte[] key_m, byte[] data);
-
-    /**
-     * @param encrypt if true, encrypts data, otherwise tries to decrypt it.
-     * @param data
-     * @param key_e
-     * @return
-     */
-    byte[] crypt(boolean encrypt, byte[] data, byte[] key_e, byte[] initializationVector);
-
-    /**
-     * Create a new public key fom given private keys.
-     *
-     * @param version              of the public key / address
-     * @param stream               of the address
-     * @param privateSigningKey    private key used for signing
-     * @param privateEncryptionKey private key used for encryption
-     * @param nonceTrialsPerByte   proof of work difficulty
-     * @param extraBytes           bytes to add for the proof of work (make it harder for small messages)
-     * @param features             of the address
-     * @return a public key object
-     */
-    Pubkey createPubkey(long version, long stream, byte[] privateSigningKey, byte[] privateEncryptionKey,
-                        long nonceTrialsPerByte, long extraBytes, Pubkey.Feature... features);
-
-    /**
-     * @param privateKey private key as byte array
-     * @return a public key corresponding to the given private key
-     */
-    byte[] createPublicKey(byte[] privateKey);
-
-    /**
-     * @param privateKey private key as byte array
-     * @return a big integer representation (unsigned) of the given bytes
-     */
-    BigInteger keyToBigInt(byte[] privateKey);
-
-    /**
-     * @param data      to check
-     * @param signature the signature of the message
-     * @param pubkey    the sender's public key
-     * @return true if the signature is valid, false otherwise
-     */
-    boolean isSignatureValid(byte[] data, byte[] signature, Pubkey pubkey);
-
-    /**
-     * Calculate the signature of data, using the given private key.
-     *
-     * @param data       to be signed
-     * @param privateKey to be used for signing
-     * @return the signature
-     */
-    byte[] getSignature(byte[] data, ch.dissem.bitmessage.entity.valueobject.PrivateKey privateKey);
-
-    /**
-     * @return a random number of type long
-     */
-    long randomNonce();
-
-    byte[] multiply(byte[] k, byte[] r);
-
-    byte[] createPoint(byte[] x, byte[] y);
-}

core/src/main/java/ch/dissem/bitmessage/ports/CustomCommandHandler.java

@@ -1,27 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.ports;
-
-import ch.dissem.bitmessage.entity.CustomMessage;
-import ch.dissem.bitmessage.entity.MessagePayload;
-
-/**
- * @author Christian Basler
- */
-public interface CustomCommandHandler {
-    MessagePayload handle(CustomMessage request);
-}

core/src/main/java/ch/dissem/bitmessage/ports/Inventory.java

@@ -1,57 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.ports;
-
-import ch.dissem.bitmessage.entity.ObjectMessage;
-import ch.dissem.bitmessage.entity.payload.ObjectType;
-import ch.dissem.bitmessage.entity.valueobject.InventoryVector;
-
-import java.util.List;
-
-/**
- * The Inventory stores and retrieves objects, cleans up outdated objects and can tell which objects are still missing.
- */
-public interface Inventory {
-    /**
-     * Returns the IVs of all valid objects we have for the given streams
-     */
-    List<InventoryVector> getInventory(long... streams);
-
-    /**
-     * Returns the IVs of all objects in the offer that we don't have already. Implementations are allowed to
-     * ignore the streams parameter, but it must be set when calling this method.
-     */
-    List<InventoryVector> getMissing(List<InventoryVector> offer, long... streams);
-
-    ObjectMessage getObject(InventoryVector vector);
-
-    /**
-     * This method is mainly used to search for public keys to newly added addresses or broadcasts from new
-     * subscriptions.
-     */
-    List<ObjectMessage> getObjects(long stream, long version, ObjectType... types);
-
-    void storeObject(ObjectMessage object);
-
-    boolean contains(ObjectMessage object);
-
-    /**
-     * Deletes all objects that expired 5 minutes ago or earlier
-     * (so we don't accidentally request objects we just deleted)
-     */
-    void cleanup();
-}

core/src/main/java/ch/dissem/bitmessage/ports/MemoryNodeRegistry.java

@@ -1,128 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.ports;
-
-import ch.dissem.bitmessage.entity.valueobject.NetworkAddress;
-import ch.dissem.bitmessage.utils.UnixTime;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.net.InetAddress;
-import java.util.*;
-import java.util.concurrent.ConcurrentHashMap;
-
-import static ch.dissem.bitmessage.utils.Collections.selectRandom;
-import static ch.dissem.bitmessage.utils.UnixTime.HOUR;
-import static java.util.Collections.newSetFromMap;
-
-public class MemoryNodeRegistry implements NodeRegistry {
-    private static final Logger LOG = LoggerFactory.getLogger(MemoryNodeRegistry.class);
-
-    private final Map<Long, Set<NetworkAddress>> stableNodes = new ConcurrentHashMap<>();
-    private final Map<Long, Set<NetworkAddress>> knownNodes = new ConcurrentHashMap<>();
-
-    private void loadStableNodes() {
-        try (InputStream in = getClass().getClassLoader().getResourceAsStream("nodes.txt")) {
-            Scanner scanner = new Scanner(in);
-            long stream = 0;
-            Set<NetworkAddress> streamSet = null;
-            while (scanner.hasNext()) {
-                try {
-                    String line = scanner.nextLine().trim();
-                    if (line.startsWith("#") || line.isEmpty()) {
-                        // Ignore
-                        continue;
-                    }
-                    if (line.startsWith("[stream")) {
-                        stream = Long.parseLong(line.substring(8, line.lastIndexOf(']')));
-                        streamSet = new HashSet<>();
-                        stableNodes.put(stream, streamSet);
-                    } else if (streamSet != null) {
-                        int portIndex = line.lastIndexOf(':');
-                        InetAddress[] inetAddresses = InetAddress.getAllByName(line.substring(0, portIndex));
-                        int port = Integer.valueOf(line.substring(portIndex + 1));
-                        for (InetAddress inetAddress : inetAddresses) {
-                            streamSet.add(new NetworkAddress.Builder().ip(inetAddress).port(port).stream(stream).build());
-                        }
-                    }
-                } catch (IOException e) {
-                    LOG.warn(e.getMessage(), e);
-                }
-            }
-            if (LOG.isDebugEnabled()) {
-                for (Map.Entry<Long, Set<NetworkAddress>> e : stableNodes.entrySet()) {
-                    LOG.debug("Stream " + e.getKey() + ": loaded " + e.getValue().size() + " bootstrap nodes.");
-                }
-            }
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    @Override
-    public List<NetworkAddress> getKnownAddresses(int limit, long... streams) {
-        List<NetworkAddress> result = new LinkedList<>();
-        for (long stream : streams) {
-            Set<NetworkAddress> known = knownNodes.get(stream);
-            if (known != null && !known.isEmpty()) {
-                for (NetworkAddress node : known) {
-                    if (node.getTime() > UnixTime.now(-3 * HOUR)) {
-                        result.add(node);
-                    } else {
-                        known.remove(node);
-                    }
-                }
-            } else {
-                Set<NetworkAddress> nodes = stableNodes.get(stream);
-                if (nodes == null || nodes.isEmpty()) {
-                    loadStableNodes();
-                    nodes = stableNodes.get(stream);
-                }
-                if (nodes != null && !nodes.isEmpty()) {
-                    // To reduce load on stable nodes, only return one
-                    result.add(selectRandom(nodes));
-                }
-            }
-        }
-        return selectRandom(limit, result);
-    }
-
-    @Override
-    public void offerAddresses(List<NetworkAddress> addresses) {
-        for (NetworkAddress node : addresses) {
-            if (node.getTime() <= UnixTime.now()) {
-                if (!knownNodes.containsKey(node.getStream())) {
-                    synchronized (knownNodes) {
-                        if (!knownNodes.containsKey(node.getStream())) {
-                            knownNodes.put(
-                                    node.getStream(),
-                                    newSetFromMap(new ConcurrentHashMap<NetworkAddress, Boolean>())
-                            );
-                        }
-                    }
-                }
-                if (node.getTime() <= UnixTime.now()) {
-                    // TODO: This isn't quite correct
-                    // If the node is already known, the one with the more recent time should be used
-                    knownNodes.get(node.getStream()).add(node);
-                }
-            }
-        }
-    }
-}

core/src/main/java/ch/dissem/bitmessage/ports/MessageRepository.java

@@ -1,46 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.ports;
-
-import ch.dissem.bitmessage.entity.BitmessageAddress;
-import ch.dissem.bitmessage.entity.Plaintext;
-import ch.dissem.bitmessage.entity.Plaintext.Status;
-import ch.dissem.bitmessage.entity.valueobject.Label;
-
-import java.util.List;
-
-public interface MessageRepository {
-    List<Label> getLabels();
-
-    List<Label> getLabels(Label.Type... types);
-
-    int countUnread(Label label);
-
-    Plaintext getMessage(byte[] initialHash);
-
-    List<Plaintext> findMessages(Label label);
-
-    List<Plaintext> findMessages(Status status);
-
-    List<Plaintext> findMessages(Status status, BitmessageAddress recipient);
-
-    List<Plaintext> findMessages(BitmessageAddress sender);
-
-    void save(Plaintext message);
-
-    void remove(Plaintext message);
-}

core/src/main/java/ch/dissem/bitmessage/ports/MultiThreadedPOWEngine.java

@@ -1,141 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.ports;
-
-import ch.dissem.bitmessage.utils.Bytes;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import java.security.MessageDigest;
-import java.security.NoSuchAlgorithmException;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.concurrent.Semaphore;
-
-import static ch.dissem.bitmessage.utils.Bytes.inc;
-
-/**
- * A POW engine using all available CPU cores.
- */
-public class MultiThreadedPOWEngine implements ProofOfWorkEngine {
-    private static final Logger LOG = LoggerFactory.getLogger(MultiThreadedPOWEngine.class);
-    private static final Semaphore semaphore = new Semaphore(1, true);
-
-    /**
-     * This method will block until all pending nonce calculations are done, but not wait for its own calculation
-     * to finish.
-     * (This implementation becomes very inefficient if multiple nonce are calculated at the same time.)
-     *
-     * @param initialHash the SHA-512 hash of the object to send, sans nonce
-     * @param target      the target, representing an unsigned long
-     * @param callback    called with the calculated nonce as argument. The ProofOfWorkEngine implementation must make
-     */
-    @Override
-    public void calculateNonce(byte[] initialHash, byte[] target, Callback callback) {
-        try {
-            semaphore.acquire();
-        } catch (InterruptedException e) {
-            throw new RuntimeException(e);
-        }
-        callback = new CallbackWrapper(callback);
-        int cores = Runtime.getRuntime().availableProcessors();
-        if (cores > 255) cores = 255;
-        LOG.info("Doing POW using " + cores + " cores");
-        List<Worker> workers = new ArrayList<>(cores);
-        for (int i = 0; i < cores; i++) {
-            Worker w = new Worker(workers, (byte) cores, i, initialHash, target, callback);
-            workers.add(w);
-        }
-        for (Worker w : workers) {
-            // Doing this in the previous loop might cause a ConcurrentModificationException in the worker
-            // if a worker finds a nonce while new ones are still being added.
-            w.start();
-        }
-    }
-
-    private static class Worker extends Thread {
-        private final Callback callback;
-        private final byte numberOfCores;
-        private final List<Worker> workers;
-        private final byte[] initialHash;
-        private final byte[] target;
-        private final MessageDigest mda;
-        private final byte[] nonce = new byte[8];
-
-        public Worker(List<Worker> workers, byte numberOfCores, int core, byte[] initialHash, byte[] target,
-                      Callback callback) {
-            this.callback = callback;
-            this.numberOfCores = numberOfCores;
-            this.workers = workers;
-            this.initialHash = initialHash;
-            this.target = target;
-            this.nonce[7] = (byte) core;
-            try {
-                mda = MessageDigest.getInstance("SHA-512");
-            } catch (NoSuchAlgorithmException e) {
-                LOG.error(e.getMessage(), e);
-                throw new RuntimeException(e);
-            }
-        }
-
-        @Override
-        public void run() {
-            do {
-                inc(nonce, numberOfCores);
-                mda.update(nonce);
-                mda.update(initialHash);
-                if (!Bytes.lt(target, mda.digest(mda.digest()), 8)) {
-                    synchronized (callback) {
-                        if (!Thread.interrupted()) {
-                            for (Worker w : workers) {
-                                w.interrupt();
-                            }
-                            // Clear interrupted flag for callback
-                            Thread.interrupted();
-                            callback.onNonceCalculated(initialHash, nonce);
-                        }
-                    }
-                    return;
-                }
-            } while (!Thread.interrupted());
-        }
-    }
-
-    public static class CallbackWrapper implements Callback {
-        private final Callback callback;
-        private final long startTime;
-        private boolean waiting = true;
-
-        public CallbackWrapper(Callback callback) {
-            this.startTime = System.currentTimeMillis();
-            this.callback = callback;
-        }
-
-        @Override
-        public void onNonceCalculated(byte[] initialHash, byte[] nonce) {
-            // Prevents the callback from being called twice if two nonces are found simultaneously
-            synchronized (this) {
-                if (waiting) {
-                    semaphore.release();
-                    LOG.info("Nonce calculated in " + ((System.currentTimeMillis() - startTime) / 1000) + " seconds");
-                    waiting = false;
-                    callback.onNonceCalculated(initialHash, nonce);
-                }
-            }
-        }
-    }
-}

core/src/main/java/ch/dissem/bitmessage/ports/NetworkHandler.java

@@ -1,73 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.ports;
-
-import ch.dissem.bitmessage.entity.CustomMessage;
-import ch.dissem.bitmessage.entity.ObjectMessage;
-import ch.dissem.bitmessage.entity.valueobject.InventoryVector;
-import ch.dissem.bitmessage.utils.Property;
-
-import java.io.IOException;
-import java.net.InetAddress;
-import java.util.concurrent.Future;
-
-/**
- * Handles incoming messages
- */
-public interface NetworkHandler {
-    /**
-     * Connects to the trusted host, fetches and offers new messages and disconnects afterwards.
-     * <p>
-     * An implementation should disconnect if either the timeout is reached or the returned thread is interrupted.
-     * </p>
-     */
-    Future<?> synchronize(InetAddress server, int port, MessageListener listener, long timeoutInSeconds);
-
-    /**
-     * Send a custom message to a specific node (that should implement handling for this message type) and returns
-     * the response, which in turn is expected to be a {@link CustomMessage}.
-     *
-     * @param server  the node's address
-     * @param port    the node's port
-     * @param request the request
-     * @return the response
-     */
-    CustomMessage send(InetAddress server, int port, CustomMessage request);
-
-    /**
-     * Start a full network node, accepting incoming connections and relaying objects.
-     */
-    void start(MessageListener listener);
-
-    /**
-     * Stop the full network node.
-     */
-    void stop();
-
-    /**
-     * Offer new objects to up to 8 random nodes.
-     */
-    void offer(InventoryVector iv);
-
-    Property getNetworkStatus();
-
-    boolean isRunning();
-
-    interface MessageListener {
-        void receive(ObjectMessage object) throws IOException;
-    }
-}

core/src/main/java/ch/dissem/bitmessage/ports/NodeRegistry.java

@@ -1,30 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.ports;
-
-import ch.dissem.bitmessage.entity.valueobject.NetworkAddress;
-
-import java.util.List;
-
-/**
- * Stores and provides known peers.
- */
-public interface NodeRegistry {
-    List<NetworkAddress> getKnownAddresses(int limit, long... streams);
-
-    void offerAddresses(List<NetworkAddress> addresses);
-}

core/src/main/java/ch/dissem/bitmessage/ports/ProofOfWorkEngine.java

@@ -1,40 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.ports;
-
-/**
- * Does the proof of work necessary to send an object.
- */
-public interface ProofOfWorkEngine {
-    /**
-     * Returns a nonce, such that the first 8 bytes from sha512(sha512(nonce||initialHash)) represent a unsigned long
-     * smaller than target.
-     *
-     * @param initialHash the SHA-512 hash of the object to send, sans nonce
-     * @param target      the target, representing an unsigned long
-     * @param callback    called with the calculated nonce as argument. The ProofOfWorkEngine implementation must make
-     *                    sure this is only called once.
-     */
-    void calculateNonce(byte[] initialHash, byte[] target, Callback callback);
-
-    interface Callback {
-        /**
-         * @param nonce 8 bytes nonce
-         */
-        void onNonceCalculated(byte[] initialHash, byte[] nonce);
-    }
-}

core/src/main/java/ch/dissem/bitmessage/ports/ProofOfWorkRepository.java

@@ -1,32 +0,0 @@
-package ch.dissem.bitmessage.ports;
-
-import ch.dissem.bitmessage.entity.ObjectMessage;
-
-import java.util.List;
-
-/**
- * Objects that proof of work is currently being done for.
- *
- * @author Christian Basler
- */
-public interface ProofOfWorkRepository {
-    Item getItem(byte[] initialHash);
-
-    List<byte[]> getItems();
-
-    void putObject(ObjectMessage object, long nonceTrialsPerByte, long extraBytes);
-
-    void removeObject(byte[] initialHash);
-
-    class Item {
-        public final ObjectMessage object;
-        public final long nonceTrialsPerByte;
-        public final long extraBytes;
-
-        public Item(ObjectMessage object, long nonceTrialsPerByte, long extraBytes) {
-            this.object = object;
-            this.nonceTrialsPerByte = nonceTrialsPerByte;
-            this.extraBytes = extraBytes;
-        }
-    }
-}

core/src/main/java/ch/dissem/bitmessage/ports/SimplePOWEngine.java

@@ -1,49 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.ports;
-
-import ch.dissem.bitmessage.utils.Bytes;
-
-import java.security.MessageDigest;
-
-import static ch.dissem.bitmessage.utils.Bytes.inc;
-
-/**
- * You should really use the MultiThreadedPOWEngine, but this one might help you grok the other one.
- * <p>
- * <strong>Warning:</strong> implementations probably depend on POW being asynchronous, that's
- * another reason not to use this one.
- * </p>
- */
-public class SimplePOWEngine implements ProofOfWorkEngine {
-    @Override
-    public void calculateNonce(byte[] initialHash, byte[] target, Callback callback) {
-        byte[] nonce = new byte[8];
-        MessageDigest mda;
-        try {
-            mda = MessageDigest.getInstance("SHA-512");
-        } catch (Exception e) {
-            throw new RuntimeException(e);
-        }
-        do {
-            inc(nonce);
-            mda.update(nonce);
-            mda.update(initialHash);
-        } while (Bytes.lt(target, mda.digest(mda.digest()), 8));
-        callback.onNonceCalculated(initialHash, nonce);
-    }
-}

core/src/main/java/ch/dissem/bitmessage/utils/AccessCounter.java

@@ -1,61 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.utils;
-
-/**
- * Intended to count the bytes read or written during (de-)serialization.
- */
-public class AccessCounter {
-    private int count;
-
-    /**
-     * Increases the counter by one, if not null.
-     */
-    public static void inc(AccessCounter counter) {
-        if (counter != null) counter.inc();
-    }
-
-    /**
-     * Increases the counter by length, if not null.
-     */
-    public static void inc(AccessCounter counter, int length) {
-        if (counter != null) counter.inc(length);
-    }
-
-    /**
-     * Increases the counter by one.
-     */
-    private void inc() {
-        count++;
-    }
-
-    /**
-     * Increases the counter by length.
-     */
-    private void inc(int length) {
-        count += length;
-    }
-
-    public int length() {
-        return count;
-    }
-
-    @Override
-    public String toString() {
-        return String.valueOf(count);
-    }
-}

core/src/main/java/ch/dissem/bitmessage/utils/Base58.java

@@ -1,167 +0,0 @@
-/*
- * Copyright 2011 Google Inc.
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.utils;
-
-import ch.dissem.bitmessage.exception.AddressFormatException;
-
-import java.io.UnsupportedEncodingException;
-
-import static java.util.Arrays.copyOfRange;
-
-/**
- * Base58 encoder and decoder.
- *
- * @author Christian Basler: I removed some dependencies to the BitcoinJ code so it can be used here more easily.
- */
-public class Base58 {
-    private static final int[] INDEXES = new int[128];
-    private static char[] ALPHABET = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz".toCharArray();
-
-    static {
-        for (int i = 0; i < INDEXES.length; i++) {
-            INDEXES[i] = -1;
-        }
-        for (int i = 0; i < ALPHABET.length; i++) {
-            INDEXES[ALPHABET[i]] = i;
-        }
-    }
-
-    /**
-     * Encodes the given bytes in base58. No checksum is appended.
-     *
-     * @param input to encode
-     * @return base58 encoded input
-     */
-    public static String encode(byte[] input) {
-        if (input.length == 0) {
-            return "";
-        }
-        input = copyOfRange(input, 0, input.length);
-        // Count leading zeroes.
-        int zeroCount = 0;
-        while (zeroCount < input.length && input[zeroCount] == 0) {
-            ++zeroCount;
-        }
-        // The actual encoding.
-        byte[] temp = new byte[input.length * 2];
-        int j = temp.length;
-
-        int startAt = zeroCount;
-        while (startAt < input.length) {
-            byte mod = divmod58(input, startAt);
-            if (input[startAt] == 0) {
-                ++startAt;
-            }
-            temp[--j] = (byte) ALPHABET[mod];
-        }
-
-        // Strip extra '1' if there are some after decoding.
-        while (j < temp.length && temp[j] == ALPHABET[0]) {
-            ++j;
-        }
-        // Add as many leading '1' as there were leading zeros.
-        while (--zeroCount >= 0) {
-            temp[--j] = (byte) ALPHABET[0];
-        }
-
-        byte[] output = copyOfRange(temp, j, temp.length);
-        try {
-            return new String(output, "US-ASCII");
-        } catch (UnsupportedEncodingException e) {
-            throw new RuntimeException(e);  // Cannot happen.
-        }
-    }
-
-    public static byte[] decode(String input) throws AddressFormatException {
-        if (input.length() == 0) {
-            return new byte[0];
-        }
-        byte[] input58 = new byte[input.length()];
-        // Transform the String to a base58 byte sequence
-        for (int i = 0; i < input.length(); ++i) {
-            char c = input.charAt(i);
-
-            int digit58 = -1;
-            if (c >= 0 && c < 128) {
-                digit58 = INDEXES[c];
-            }
-            if (digit58 < 0) {
-                throw new AddressFormatException("Illegal character " + c + " at " + i);
-            }
-
-            input58[i] = (byte) digit58;
-        }
-        // Count leading zeroes
-        int zeroCount = 0;
-        while (zeroCount < input58.length && input58[zeroCount] == 0) {
-            ++zeroCount;
-        }
-        // The encoding
-        byte[] temp = new byte[input.length()];
-        int j = temp.length;
-
-        int startAt = zeroCount;
-        while (startAt < input58.length) {
-            byte mod = divmod256(input58, startAt);
-            if (input58[startAt] == 0) {
-                ++startAt;
-            }
-
-            temp[--j] = mod;
-        }
-        // Do no add extra leading zeroes, move j to first non null byte.
-        while (j < temp.length && temp[j] == 0) {
-            ++j;
-        }
-        return copyOfRange(temp, j - zeroCount, temp.length);
-    }
-
-    //
-    // number -> number / 58, returns number % 58
-    //
-    private static byte divmod58(byte[] number, int startAt) {
-        int remainder = 0;
-        for (int i = startAt; i < number.length; i++) {
-            int digit256 = (int) number[i] & 0xFF;
-            int temp = remainder * 256 + digit256;
-
-            number[i] = (byte) (temp / 58);
-
-            remainder = temp % 58;
-        }
-
-        return (byte) remainder;
-    }
-
-    //
-    // number -> number / 256, returns number % 256
-    //
-    private static byte divmod256(byte[] number58, int startAt) {
-        int remainder = 0;
-        for (int i = startAt; i < number58.length; i++) {
-            int digit58 = (int) number58[i] & 0xFF;
-            int temp = remainder * 58 + digit58;
-
-            number58[i] = (byte) (temp / 256);
-
-            remainder = temp % 256;
-        }
-
-        return (byte) remainder;
-    }
-}

core/src/main/java/ch/dissem/bitmessage/utils/Bytes.java

@@ -1,147 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.utils;
-
-/**
- * A helper class for working with byte arrays interpreted as unsigned big endian integers.
- * This is one part due to the fact that Java doesn't support unsigned numbers, and another
- * part so we don't have to convert between byte arrays and numbers in time critical
- * situations.
- */
-public class Bytes {
-    public static void inc(byte[] nonce) {
-        for (int i = nonce.length - 1; i >= 0; i--) {
-            nonce[i]++;
-            if (nonce[i] != 0) break;
-        }
-    }
-
-    /**
-     * Increases nonce by value, which is used as an unsigned byte value.
-     *
-     * @param nonce an unsigned number
-     * @param value to be added to nonce
-     */
-    public static void inc(byte[] nonce, byte value) {
-        int i = nonce.length - 1;
-        nonce[i] += value;
-        if (value > 0 && (nonce[i] < 0 || nonce[i] >= value))
-            return;
-        if (value < 0 && (nonce[i] < 0 && nonce[i] >= value))
-            return;
-
-        for (i = i - 1; i >= 0; i--) {
-            nonce[i]++;
-            if (nonce[i] != 0) break;
-        }
-    }
-
-    /**
-     * @return true if a &lt; b.
-     */
-    public static boolean lt(byte[] a, byte[] b) {
-        byte[] max = (a.length > b.length ? a : b);
-        byte[] min = (max == a ? b : a);
-        int diff = max.length - min.length;
-
-        for (int i = 0; i < max.length - min.length; i++) {
-            if (max[i] != 0) return a != max;
-        }
-        for (int i = diff; i < max.length; i++) {
-            if (max[i] != min[i - diff]) {
-                return lt(max[i], min[i - diff]) == (a == max);
-            }
-        }
-        return false;
-    }
-
-    /**
-     * @return true if a &lt; b, where the first [size] bytes are used as the numbers to check.
-     */
-    public static boolean lt(byte[] a, byte[] b, int size) {
-        for (int i = 0; i < size; i++) {
-            if (a[i] != b[i]) {
-                return lt(a[i], b[i]);
-            }
-        }
-        return false;
-    }
-
-    private static boolean lt(byte a, byte b) {
-        if (a < 0) return b < 0 && a < b;
-        if (b < 0) return a >= 0 || a < b;
-        return a < b;
-        // This would be easier to understand, but is (slightly) slower:
-        // return (a & 0xff) < (b & 0xff);
-    }
-
-    /**
-     * @return a new byte array of length, left-padded with '0'.
-     */
-    public static byte[] expand(byte[] source, int size) {
-        byte[] result = new byte[size];
-        System.arraycopy(source, 0, result, size - source.length, source.length);
-        return result;
-    }
-
-    /**
-     * @return a new byte array containing the first <em>size</em> bytes of the given array.
-     */
-    public static byte[] truncate(byte[] source, int size) {
-        byte[] result = new byte[size];
-        System.arraycopy(source, 0, result, 0, size);
-        return result;
-    }
-
-    /**
-     * @return the byte array that hex represents. This is meant for test use and should be rewritten if used in
-     * production code.
-     */
-    public static byte[] fromHex(String hex) {
-        if (hex.length() % 2 != 0) throw new IllegalArgumentException("expected even number of characters");
-        byte[] result = new byte[hex.length() / 2];
-        for (int i = 0; i < result.length; i++) {
-            result[i] = (byte) (hexValue(hex.charAt(i * 2)) * 16);
-            result[i] += hexValue(hex.charAt(i * 2 + 1));
-        }
-        return result;
-    }
-
-    private static int hexValue(char c) {
-        if (c >= '0' && c <= '9') {
-            return c - '0';
-        }
-        if (c >= 'a' && c <= 'f') {
-            return 10 + c - 'a';
-        }
-        if (c >= 'A' && c <= 'F') {
-            return 10 + c - 'A';
-        }
-        throw new IllegalArgumentException("'" + c + "' is not a valid hex value");
-    }
-
-    /**
-     * @return the number of leading '0' of a byte array.
-     */
-    public static int numberOfLeadingZeros(byte[] bytes) {
-        int i;
-        for (i = 0; i < bytes.length; i++) {
-            if (bytes[i] != 0) return i;
-        }
-        return i;
-    }
-}

core/src/main/java/ch/dissem/bitmessage/utils/CallbackWaiter.java

@@ -1,48 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.utils;
-
-/**
- * Waits for a value within a callback method to be set.
- */
-public class CallbackWaiter<T> {
-    private final long startTime = System.currentTimeMillis();
-    private volatile boolean isSet;
-    private T value;
-    private long time;
-
-    public void setValue(T value) {
-        synchronized (this) {
-            this.time = System.currentTimeMillis() - startTime;
-            this.value = value;
-            this.isSet = true;
-        }
-    }
-
-    public T waitForValue() throws InterruptedException {
-        while (!isSet) {
-            Thread.sleep(100);
-        }
-        synchronized (this) {
-            return value;
-        }
-    }
-
-    public long getTime() {
-        return time;
-    }
-}

core/src/main/java/ch/dissem/bitmessage/utils/Collections.java

@@ -1,71 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.utils;
-
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.List;
-import java.util.Random;
-
-public class Collections {
-    private final static Random RANDOM = new Random();
-
-    /**
-     * @param count      the number of elements to return (if possible)
-     * @param collection the collection to take samples from
-     * @return a random subset of the given collection, or a copy of the collection if it's not larger than count. The
-     * result is by no means securely random, but should be random enough so not the same objects get selected over
-     * and over again.
-     */
-    public static <T> List<T> selectRandom(int count, Collection<T> collection) {
-        ArrayList<T> result = new ArrayList<>(count);
-        if (collection.size() <= count) {
-            result.addAll(collection);
-        } else {
-            double collectionRest = collection.size();
-            double resultRest = count;
-            int skipMax = (int) Math.ceil(collectionRest / resultRest);
-            int skip = RANDOM.nextInt(skipMax);
-            for (T item : collection) {
-                collectionRest--;
-                if (skip > 0) {
-                    skip--;
-                } else {
-                    result.add(item);
-                    resultRest--;
-                    if (resultRest == 0) {
-                        break;
-                    }
-                    skipMax = (int) Math.ceil(collectionRest / resultRest);
-                    skip = RANDOM.nextInt(skipMax);
-                }
-            }
-        }
-        return result;
-    }
-
-    public static <T> T selectRandom(Collection<T> collection) {
-        int index = RANDOM.nextInt(collection.size());
-        for (T item : collection) {
-            if (index == 0) {
-                return item;
-            }
-            index--;
-        }
-        throw new IllegalArgumentException("Empty collection? Size: " + collection.size());
-    }
-}

core/src/main/java/ch/dissem/bitmessage/utils/DebugUtils.java

@@ -1,48 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.utils;
-
-import ch.dissem.bitmessage.entity.ObjectMessage;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import java.io.File;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.util.Map;
-
-public class DebugUtils {
-    private final static Logger LOG = LoggerFactory.getLogger(DebugUtils.class);
-
-    public static void saveToFile(ObjectMessage objectMessage) {
-        try {
-            File f = new File(System.getProperty("user.home") + "/jabit.error/" + objectMessage.getInventoryVector() + ".inv");
-            f.createNewFile();
-            objectMessage.write(new FileOutputStream(f));
-        } catch (IOException e) {
-            LOG.debug(e.getMessage(), e);
-        }
-    }
-
-    public static <K> void inc(Map<K, Integer> map, K key) {
-        if (map.containsKey(key)) {
-            map.put(key, map.get(key) + 1);
-        } else {
-            map.put(key, 1);
-        }
-    }
-}

core/src/main/java/ch/dissem/bitmessage/utils/Decode.java

@@ -1,142 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.utils;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.nio.ByteBuffer;
-
-import static ch.dissem.bitmessage.utils.AccessCounter.inc;
-
-/**
- * This class handles decoding simple types from byte stream, according to
- * https://bitmessage.org/wiki/Protocol_specification#Common_structures
- */
-public class Decode {
-    public static byte[] shortVarBytes(InputStream stream, AccessCounter counter) throws IOException {
-        int length = uint16(stream, counter);
-        return bytes(stream, length, counter);
-    }
-
-    public static byte[] varBytes(InputStream stream) throws IOException {
-        int length = (int) varInt(stream, null);
-        return bytes(stream, length, null);
-    }
-
-    public static byte[] varBytes(InputStream stream, AccessCounter counter) throws IOException {
-        int length = (int) varInt(stream, counter);
-        return bytes(stream, length, counter);
-    }
-
-    public static byte[] bytes(InputStream stream, int count) throws IOException {
-        return bytes(stream, count, null);
-    }
-
-    public static byte[] bytes(InputStream stream, int count, AccessCounter counter) throws IOException {
-        byte[] result = new byte[count];
-        int off = 0;
-        while (off < count) {
-            int read = stream.read(result, off, count - off);
-            if (read < 0) {
-                throw new IOException("Unexpected end of stream, wanted to read " + count + " bytes but only got " + off);
-            }
-            off += read;
-        }
-        inc(counter, count);
-        return result;
-    }
-
-    public static long[] varIntList(InputStream stream) throws IOException {
-        int length = (int) varInt(stream);
-        long[] result = new long[length];
-
-        for (int i = 0; i < length; i++) {
-            result[i] = varInt(stream);
-        }
-        return result;
-    }
-
-    public static long varInt(InputStream stream) throws IOException {
-        return varInt(stream, null);
-    }
-
-    public static long varInt(InputStream stream, AccessCounter counter) throws IOException {
-        int first = stream.read();
-        inc(counter);
-        switch (first) {
-            case 0xfd:
-                return uint16(stream, counter);
-            case 0xfe:
-                return uint32(stream, counter);
-            case 0xff:
-                return int64(stream, counter);
-            default:
-                return first;
-        }
-    }
-
-    public static int uint8(InputStream stream) throws IOException {
-        return stream.read();
-    }
-
-    public static int uint16(InputStream stream) throws IOException {
-        return uint16(stream, null);
-    }
-
-    public static int uint16(InputStream stream, AccessCounter counter) throws IOException {
-        inc(counter, 2);
-        return stream.read() * 256 + stream.read();
-    }
-
-    public static long uint32(InputStream stream) throws IOException {
-        return uint32(stream, null);
-    }
-
-    public static long uint32(InputStream stream, AccessCounter counter) throws IOException {
-        inc(counter, 4);
-        return stream.read() * 16777216L + stream.read() * 65536L + stream.read() * 256L + stream.read();
-    }
-
-    public static int int32(InputStream stream) throws IOException {
-        return int32(stream, null);
-    }
-
-    public static int int32(InputStream stream, AccessCounter counter) throws IOException {
-        inc(counter, 4);
-        return ByteBuffer.wrap(bytes(stream, 4)).getInt();
-    }
-
-    public static long int64(InputStream stream) throws IOException {
-        return int64(stream, null);
-    }
-
-    public static long int64(InputStream stream, AccessCounter counter) throws IOException {
-        inc(counter, 8);
-        return ByteBuffer.wrap(bytes(stream, 8)).getLong();
-    }
-
-    public static String varString(InputStream stream) throws IOException {
-        return varString(stream, null);
-    }
-
-    public static String varString(InputStream stream, AccessCounter counter) throws IOException {
-        int length = (int) varInt(stream, counter);
-        // FIXME: technically, it says the length in characters, but I think this one might be correct
-        // otherwise it will get complicated, as we'll need to read UTF-8 char by char...
-        return new String(bytes(stream, length, counter), "utf-8");
-    }
-}

core/src/main/java/ch/dissem/bitmessage/utils/Encode.java

@@ -1,150 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.utils;
-
-import ch.dissem.bitmessage.entity.Streamable;
-
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.nio.ByteBuffer;
-
-import static ch.dissem.bitmessage.utils.AccessCounter.inc;
-
-/**
- * This class handles encoding simple types from byte stream, according to
- * https://bitmessage.org/wiki/Protocol_specification#Common_structures
- */
-public class Encode {
-    public static void varIntList(long[] values, OutputStream stream) throws IOException {
-        varInt(values.length, stream);
-        for (long value : values) {
-            varInt(value, stream);
-        }
-    }
-
-    public static void varInt(long value, OutputStream stream) throws IOException {
-        varInt(value, stream, null);
-    }
-
-    public static void varInt(long value, OutputStream stream, AccessCounter counter) throws IOException {
-        if (value < 0) {
-            // This is due to the fact that Java doesn't really support unsigned values.
-            // Please be aware that this might be an error due to a smaller negative value being cast to long.
-            // Normally, negative values shouldn't occur within the protocol, and I large enough longs
-            // to being recognized as negatives aren't realistic.
-            stream.write(0xff);
-            inc(counter);
-            int64(value, stream, counter);
-        } else if (value < 0xfd) {
-            int8(value, stream, counter);
-        } else if (value <= 0xffffL) {
-            stream.write(0xfd);
-            inc(counter);
-            int16(value, stream, counter);
-        } else if (value <= 0xffffffffL) {
-            stream.write(0xfe);
-            inc(counter);
-            int32(value, stream, counter);
-        } else {
-            stream.write(0xff);
-            inc(counter);
-            int64(value, stream, counter);
-        }
-    }
-
-    public static void int8(long value, OutputStream stream) throws IOException {
-        int8(value, stream, null);
-    }
-
-    public static void int8(long value, OutputStream stream, AccessCounter counter) throws IOException {
-        stream.write((int) value);
-        inc(counter);
-    }
-
-    public static void int16(long value, OutputStream stream) throws IOException {
-        int16(value, stream, null);
-    }
-
-    public static void int16(long value, OutputStream stream, AccessCounter counter) throws IOException {
-        stream.write(ByteBuffer.allocate(4).putInt((int) value).array(), 2, 2);
-        inc(counter, 2);
-    }
-
-    public static void int32(long value, OutputStream stream) throws IOException {
-        int32(value, stream, null);
-    }
-
-    public static void int32(long value, OutputStream stream, AccessCounter counter) throws IOException {
-        stream.write(ByteBuffer.allocate(4).putInt((int) value).array());
-        inc(counter, 4);
-    }
-
-    public static void int64(long value, OutputStream stream) throws IOException {
-        int64(value, stream, null);
-    }
-
-    public static void int64(long value, OutputStream stream, AccessCounter counter) throws IOException {
-        stream.write(ByteBuffer.allocate(8).putLong(value).array());
-        inc(counter, 8);
-    }
-
-    public static void varString(String value, OutputStream out) throws IOException {
-        byte[] bytes = value.getBytes("utf-8");
-        // Technically, it says the length in characters, but I think this one might be correct.
-        // It doesn't really matter, as only ASCII characters are being used.
-        // see also Decode#varString()
-        varInt(bytes.length, out);
-        out.write(bytes);
-    }
-
-    public static void varBytes(byte[] data, OutputStream out) throws IOException {
-        varInt(data.length, out);
-        out.write(data);
-    }
-
-    /**
-     * Serializes a {@link Streamable} object and returns the byte array.
-     *
-     * @param streamable the object to be serialized
-     * @return an array of bytes representing the given streamable object.
-     * @throws IOException if an I/O error occurs.
-     */
-    public static byte[] bytes(Streamable streamable) throws IOException {
-        if (streamable == null) return null;
-
-        ByteArrayOutputStream stream = new ByteArrayOutputStream();
-        streamable.write(stream);
-        return stream.toByteArray();
-    }
-
-    /**
-     * @param streamable the object to be serialized
-     * @param padding    the result will be padded such that its length is a multiple of <em>padding</em>
-     * @return the bytes of the given {@link Streamable} object, 0-padded such that the final length is x*padding.
-     * @throws IOException if an I/O error occurs.
-     */
-    public static byte[] bytes(Streamable streamable, int padding) throws IOException {
-        ByteArrayOutputStream stream = new ByteArrayOutputStream();
-        streamable.write(stream);
-        int offset = padding - stream.size() % padding;
-        int length = stream.size() + offset;
-        byte[] result = new byte[length];
-        stream.write(result, offset, stream.size());
-        return result;
-    }
-}

core/src/main/java/ch/dissem/bitmessage/utils/Numbers.java

@@ -1,10 +0,0 @@
-package ch.dissem.bitmessage.utils;
-
-/**
- * @author Christian Basler
- */
-public class Numbers {
-    public static long max(long a, long b) {
-        return a > b ? a : b;
-    }
-}

core/src/main/java/ch/dissem/bitmessage/utils/Points.java

@@ -1,32 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.utils;
-
-import java.util.Arrays;
-
-/**
- * Created by chris on 20.07.15.
- */
-public class Points {
-    public static byte[] getX(byte[] P) {
-        return Arrays.copyOfRange(P, 1, ((P.length - 1) / 2) + 1);
-    }
-
-    public static byte[] getY(byte[] P) {
-        return Arrays.copyOfRange(P, ((P.length - 1) / 2) + 1, P.length);
-    }
-}

core/src/main/java/ch/dissem/bitmessage/utils/Property.java

@@ -1,91 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.utils;
-
-import java.util.Arrays;
-import java.util.Objects;
-
-/**
- * Some property that has a name, a value and/or other properties. This can be used for any purpose, but is for now
- * used to contain different status information. It is by default displayed in some JSON inspired human readable
- * notation, but you might only want to rely on the 'human readable' part.
- * <p>
- * If you need a real JSON representation, please add a method <code>toJson()</code>.
- * </p>
- */
-public class Property {
-    private String name;
-    private Object value;
-    private Property[] properties;
-
-    public Property(String name, Object value, Property... properties) {
-        this.name = name;
-        this.value = value;
-        this.properties = properties;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public Object getValue() {
-        return value;
-    }
-
-    /**
-     * Returns the property if available or <code>null</code> otherwise.
-     * Subproperties can be requested by submitting the sequence of properties.
-     */
-    public Property getProperty(String... name) {
-        if (name == null || name.length == 0) return null;
-
-        for (Property p : properties) {
-            if (Objects.equals(name[0], p.name)) {
-                if (name.length == 1)
-                    return p;
-                else
-                    return p.getProperty(Arrays.copyOfRange(name, 1, name.length));
-            }
-        }
-        return null;
-    }
-
-    public Property[] getProperties() {
-        return properties;
-    }
-
-    @Override
-    public String toString() {
-        return toString("");
-    }
-
-    private String toString(String indentation) {
-        StringBuilder result = new StringBuilder();
-        result.append(indentation).append(name).append(": ");
-        if (value != null || properties.length == 0) {
-            result.append(value);
-        }
-        if (properties.length > 0) {
-            result.append("{\n");
-            for (Property property : properties) {
-                result.append(property.toString(indentation + "  ")).append('\n');
-            }
-            result.append(indentation).append("}");
-        }
-        return result.toString();
-    }
-}

core/src/main/java/ch/dissem/bitmessage/utils/Singleton.java

@@ -1,38 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.utils;
-
-import ch.dissem.bitmessage.ports.Cryptography;
-
-/**
- * Created by chris on 20.07.15.
- */
-public class Singleton {
-    private static Cryptography cryptography;
-
-    public static void initialize(Cryptography cryptography) {
-        synchronized (Singleton.class) {
-            if (Singleton.cryptography == null) {
-                Singleton.cryptography = cryptography;
-            }
-        }
-    }
-
-    public static Cryptography security() {
-        return cryptography;
-    }
-}

core/src/main/java/ch/dissem/bitmessage/utils/Strings.java

@@ -1,42 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.utils;
-
-import ch.dissem.bitmessage.entity.payload.ObjectType;
-
-/**
- * Some utilities to handle strings.
- * TODO: Probably this should be split in a GUI related and an SQL related utility class.
- */
-public class Strings {
-    public static StringBuilder join(Object... objects) {
-        StringBuilder streamList = new StringBuilder();
-        for (int i = 0; i < objects.length; i++) {
-            if (i > 0) streamList.append(", ");
-            streamList.append(objects[i]);
-        }
-        return streamList;
-    }
-
-    public static StringBuilder hex(byte[] bytes) {
-        StringBuilder hex = new StringBuilder(bytes.length + 2);
-        for (byte b : bytes) {
-            hex.append(String.format("%02x", b));
-        }
-        return hex;
-    }
-}

core/src/main/java/ch/dissem/bitmessage/utils/TTL.java

@@ -1,40 +0,0 @@
-package ch.dissem.bitmessage.utils;
-
-import static ch.dissem.bitmessage.utils.UnixTime.DAY;
-
-/**
- * Stores times to live for different object types. Usually this shouldn't be messed with,
- * but for tests it might be a good idea to reduce it to a minimum, and on mobile clients
- * you might want to optimize it as well.
- *
- * @author Christian Basler
- */
-public class TTL {
-    private static long msg = 2 * DAY;
-    private static long getpubkey = 2 * DAY;
-    private static long pubkey = 28 * DAY;
-
-    public static long msg() {
-        return msg;
-    }
-
-    public static void msg(long msg) {
-        TTL.msg = msg;
-    }
-
-    public static long getpubkey() {
-        return getpubkey;
-    }
-
-    public static void getpubkey(long getpubkey) {
-        TTL.getpubkey = getpubkey;
-    }
-
-    public static long pubkey() {
-        return pubkey;
-    }
-
-    public static void pubkey(long pubkey) {
-        TTL.pubkey = pubkey;
-    }
-}

core/src/main/java/ch/dissem/bitmessage/utils/UnixTime.java

@@ -1,52 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.utils;
-
-/**
- * A simple utility class that simplifies using the second based time used in Bitmessage.
- */
-public class UnixTime {
-    /**
-     * Length of a minute in seconds, intended for use with {@link #now(long)}.
-     */
-    public static final int MINUTE = 60;
-    /**
-     * Length of an hour in seconds, intended for use with {@link #now(long)}.
-     */
-    public static final long HOUR = 60 * MINUTE;
-    /**
-     * Length of a day in seconds, intended for use with {@link #now(long)}.
-     */
-    public static final long DAY = 24 * HOUR;
-
-    /**
-     * @return the time in second based Unix time ({@link System#currentTimeMillis()}/1000)
-     */
-    public static long now() {
-        return System.currentTimeMillis() / 1000;
-    }
-
-    /**
-     * Same as {@link #now()} + shiftSeconds, but might be more readable.
-     *
-     * @param shiftSeconds number of seconds from now we're interested in
-     * @return the Unix time in shiftSeconds seconds / shiftSeconds seconds ago
-     */
-    public static long now(long shiftSeconds) {
-        return (System.currentTimeMillis() / 1000) + shiftSeconds;
-    }
-}

core/src/main/resources/nodes.txt

@@ -1,8 +0,0 @@
-[stream 1]
-
-dissem.ch:8444
-bootstrap8080.bitmessage.org:8080
-bootstrap8444.bitmessage.org:8444
-
-[stream 2]
-# none yet

core/src/test/java/ch/dissem/bitmessage/DecryptionTest.java

@@ -1,55 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage;
-
-import ch.dissem.bitmessage.entity.BitmessageAddress;
-import ch.dissem.bitmessage.entity.ObjectMessage;
-import ch.dissem.bitmessage.entity.payload.V4Broadcast;
-import ch.dissem.bitmessage.entity.payload.V5Broadcast;
-import ch.dissem.bitmessage.exception.DecryptionFailedException;
-import ch.dissem.bitmessage.utils.TestBase;
-import ch.dissem.bitmessage.utils.TestUtils;
-import org.junit.Test;
-
-import java.io.IOException;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
-
-public class DecryptionTest extends TestBase {
-    @Test
-    public void ensureV4BroadcastIsDecryptedCorrectly() throws IOException, DecryptionFailedException {
-        BitmessageAddress address = new BitmessageAddress("BM-2D9Vc5rFxxR5vTi53T9gkLfemViHRMVLQZ");
-        TestUtils.loadPubkey(address);
-        ObjectMessage objectMessage = TestUtils.loadObjectMessage(5, "V4Broadcast.payload");
-        V4Broadcast broadcast = (V4Broadcast) objectMessage.getPayload();
-        broadcast.decrypt(address);
-        assertEquals("Test-Broadcast", broadcast.getPlaintext().getSubject());
-        assertTrue(objectMessage.isSignatureValid(address.getPubkey()));
-    }
-
-    @Test
-    public void ensureV5BroadcastIsDecryptedCorrectly() throws IOException, DecryptionFailedException {
-        BitmessageAddress address = new BitmessageAddress("BM-2cXxfcSetKnbHJX2Y85rSkaVpsdNUZ5q9h");
-        TestUtils.loadPubkey(address);
-        ObjectMessage objectMessage = TestUtils.loadObjectMessage(5, "V5Broadcast.payload");
-        V5Broadcast broadcast = (V5Broadcast) objectMessage.getPayload();
-        broadcast.decrypt(address);
-        assertEquals("Test-Broadcast", broadcast.getPlaintext().getSubject());
-        assertTrue(objectMessage.isSignatureValid(address.getPubkey()));
-    }
-}

core/src/test/java/ch/dissem/bitmessage/EncryptionTest.java

@@ -1,64 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage;
-
-import ch.dissem.bitmessage.entity.BitmessageAddress;
-import ch.dissem.bitmessage.entity.ObjectMessage;
-import ch.dissem.bitmessage.entity.Plaintext;
-import ch.dissem.bitmessage.entity.payload.CryptoBox;
-import ch.dissem.bitmessage.entity.payload.GenericPayload;
-import ch.dissem.bitmessage.entity.payload.Msg;
-import ch.dissem.bitmessage.entity.valueobject.PrivateKey;
-import ch.dissem.bitmessage.exception.DecryptionFailedException;
-import ch.dissem.bitmessage.utils.TestBase;
-import ch.dissem.bitmessage.utils.TestUtils;
-import org.junit.Test;
-
-import java.io.IOException;
-
-import static ch.dissem.bitmessage.utils.Singleton.security;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
-
-public class EncryptionTest extends TestBase {
-    @Test
-    public void ensureDecryptedDataIsSameAsBeforeEncryption() throws IOException, DecryptionFailedException {
-        GenericPayload before = new GenericPayload(0, 1, security().randomBytes(100));
-
-        PrivateKey privateKey = new PrivateKey(false, 1, 1000, 1000);
-        CryptoBox cryptoBox = new CryptoBox(before, privateKey.getPubkey().getEncryptionKey());
-
-        GenericPayload after = GenericPayload.read(0, cryptoBox.decrypt(privateKey.getPrivateEncryptionKey()), 1, 100);
-
-        assertEquals(before, after);
-    }
-
-    @Test
-    public void ensureMessageCanBeDecrypted() throws IOException, DecryptionFailedException {
-        PrivateKey privateKey = PrivateKey.read(TestUtils.getResource("BM-2cSqjfJ8xK6UUn5Rw3RpdGQ9RsDkBhWnS8.privkey"));
-        BitmessageAddress identity = new BitmessageAddress(privateKey);
-        assertEquals("BM-2cSqjfJ8xK6UUn5Rw3RpdGQ9RsDkBhWnS8", identity.getAddress());
-
-        ObjectMessage object = TestUtils.loadObjectMessage(3, "V1Msg.payload");
-        Msg msg = (Msg) object.getPayload();
-        msg.decrypt(privateKey.getPrivateEncryptionKey());
-        Plaintext plaintext = msg.getPlaintext();
-        assertNotNull(plaintext);
-        assertEquals("Test", plaintext.getSubject());
-        assertEquals("Hallo, das ist ein Test von der v4-Adresse", plaintext.getText());
-    }
-}

core/src/test/java/ch/dissem/bitmessage/SignatureTest.java

@@ -1,71 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage;
-
-import ch.dissem.bitmessage.entity.BitmessageAddress;
-import ch.dissem.bitmessage.entity.ObjectMessage;
-import ch.dissem.bitmessage.entity.Plaintext;
-import ch.dissem.bitmessage.entity.payload.Msg;
-import ch.dissem.bitmessage.entity.payload.ObjectType;
-import ch.dissem.bitmessage.entity.payload.Pubkey;
-import ch.dissem.bitmessage.entity.payload.V4Pubkey;
-import ch.dissem.bitmessage.entity.valueobject.PrivateKey;
-import ch.dissem.bitmessage.exception.DecryptionFailedException;
-import ch.dissem.bitmessage.utils.TestBase;
-import ch.dissem.bitmessage.utils.TestUtils;
-import org.junit.Test;
-
-import java.io.IOException;
-import java.util.Date;
-
-import static org.junit.Assert.*;
-
-public class SignatureTest extends TestBase {
-    @Test
-    public void ensureValidationWorks() throws IOException {
-        ObjectMessage object = TestUtils.loadObjectMessage(3, "V3Pubkey.payload");
-        Pubkey pubkey = (Pubkey) object.getPayload();
-        assertTrue(object.isSignatureValid(pubkey));
-    }
-
-    @Test
-    public void ensureSigningWorks() throws IOException {
-        PrivateKey privateKey = new PrivateKey(false, 1, 1000, 1000);
-
-        ObjectMessage objectMessage = new ObjectMessage.Builder()
-                .objectType(ObjectType.PUBKEY)
-                .stream(1)
-                .payload(privateKey.getPubkey())
-                .build();
-        objectMessage.sign(privateKey);
-
-        assertTrue(objectMessage.isSignatureValid(privateKey.getPubkey()));
-    }
-
-    @Test
-    public void ensureMessageIsProperlySigned() throws IOException, DecryptionFailedException {
-        BitmessageAddress identity = TestUtils.loadIdentity("BM-2cSqjfJ8xK6UUn5Rw3RpdGQ9RsDkBhWnS8");
-
-        ObjectMessage object = TestUtils.loadObjectMessage(3, "V1Msg.payload");
-        Msg msg = (Msg) object.getPayload();
-        msg.decrypt(identity.getPrivateKey().getPrivateEncryptionKey());
-        Plaintext plaintext = msg.getPlaintext();
-        assertEquals(TestUtils.loadContact().getPubkey(), plaintext.getFrom().getPubkey());
-        assertNotNull(plaintext);
-        assertTrue(object.isSignatureValid(plaintext.getFrom().getPubkey()));
-    }
-}

core/src/test/java/ch/dissem/bitmessage/entity/BitmessageAddressTest.java

@@ -1,143 +0,0 @@
-/*
- * Copyright 2015 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.bitmessage.entity;
-
-import ch.dissem.bitmessage.entity.payload.Pubkey;
-import ch.dissem.bitmessage.entity.payload.V4Pubkey;
-import ch.dissem.bitmessage.entity.valueobject.PrivateKey;
-import ch.dissem.bitmessage.exception.DecryptionFailedException;
-import ch.dissem.bitmessage.utils.*;
-import org.junit.Test;
-
-import java.io.IOException;
-import java.util.Arrays;
-
-import static ch.dissem.bitmessage.entity.payload.Pubkey.Feature.DOES_ACK;
-import static ch.dissem.bitmessage.utils.Singleton.security;
-import static org.junit.Assert.*;
-
-public class BitmessageAddressTest {
-    @Test
-    public void ensureBase58DecodesCorrectly() {
-        assertHexEquals("800C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D507A5B8D",
-                Base58.decode("5HueCGU8rMjxEXxiPuD5BDku4MkFqeZyd4dZ1jvhTVqvbTLvyTJ"));
-    }
-
-    @Test
-    public void ensureAddressStaysSame() {
-        String address = "BM-2D9Vc5rFxxR5vTi53T9gkLfemViHRMVLQZ";
-        assertEquals(address, new BitmessageAddress(address).toString());
-    }
-
-    @Test
-    public void ensureStreamAndVersionAreParsed() {
-        BitmessageAddress address = new BitmessageAddress("BM-2D9Vc5rFxxR5vTi53T9gkLfemViHRMVLQZ");
-        assertEquals(1, address.getStream());
-        assertEquals(3, address.getVersion());
-
-        address = new BitmessageAddress("BM-87hJ99tPAXxtetvnje7Z491YSvbEtBJVc5e");
-        assertEquals(1, address.getStream());
-        assertEquals(4, address.getVersion());
-    }
-
-    @Test
-    public void testCreateAddress() {
-        BitmessageAddress address = new BitmessageAddress(new PrivateKey(false, 1, 1000, 1000, DOES_ACK));
-        assertNotNull(address.getPubkey());
-    }
-
-    @Test
-    public void testV2PubkeyImport() throws IOException {
-        ObjectMessage object = TestUtils.loadObjectMessage(2, "V2Pubkey.payload");
-        Pubkey pubkey = (Pubkey) object.getPayload();
-        BitmessageAddress address = new BitmessageAddress("BM-opWQhvk9xtMFvQA2Kvetedpk8LkbraWHT");
-        address.setPubkey(pubkey);
-    }
-
-    @Test
-    public void testV3PubkeyImport() throws IOException {
-        BitmessageAddress address = new BitmessageAddress("BM-2D9Vc5rFxxR5vTi53T9gkLfemViHRMVLQZ");
-        assertArrayEquals(Bytes.fromHex("007402be6e76c3cb87caa946d0c003a3d4d8e1d5"), address.getRipe());
-
-        ObjectMessage object = TestUtils.loadObjectMessage(3, "V3Pubkey.payload");
-        Pubkey pubkey = (Pubkey) object.getPayload();
-        assertTrue(object.isSignatureValid(pubkey));
-        address.setPubkey(pubkey);
-
-        assertArrayEquals(Bytes.fromHex("007402be6e76c3cb87caa946d0c003a3d4d8e1d5"), pubkey.getRipe());
-    }
-
-    @Test
-    public void testV4PubkeyImport() throws IOException, DecryptionFailedException {
-        BitmessageAddress address = new BitmessageAddress("BM-2cXxfcSetKnbHJX2Y85rSkaVpsdNUZ5q9h");
-        ObjectMessage object = TestUtils.loadObjectMessage(4, "V4Pubkey.payload");
-        object.decrypt(address.getPublicDecryptionKey());
-        V4Pubkey pubkey = (V4Pubkey) object.getPayload();
-        assertTrue(object.isSignatureValid(pubkey));
-        address.setPubkey(pubkey);
-    }
-
-    @Test
-    public void testV3AddressImport() throws IOException {
-        String address_string = "BM-2DAjcCFrqFrp88FUxExhJ9kPqHdunQmiyn";
-        assertEquals(3, new BitmessageAddress(address_string).getVersion());
-        assertEquals(1, new BitmessageAddress(address_string).getStream());
-
-        byte[] privsigningkey = getSecret("5KU2gbe9u4rKJ8PHYb1rvwMnZnAJj4gtV5GLwoYckeYzygWUzB9");
-        byte[] privencryptionkey = getSecret("5KHd4c6cavd8xv4kzo3PwnVaYuBgEfg7voPQ5V97aZKgpYBXGck");
-
-        System.out.println("\n\n" + Strings.hex(privsigningkey) + "\n\n");
-
-        BitmessageAddress address = new BitmessageAddress(new PrivateKey(privsigningkey, privencryptionkey,
-                security().createPubkey(3, 1, privsigningkey, privencryptionkey, 320, 14000)));
-        assertEquals(address_string, address.getAddress());
-    }
-
-    @Test
-    public void testGetSecret() throws IOException {
-        assertHexEquals("0C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D",
-                getSecret("5HueCGU8rMjxEXxiPuD5BDku4MkFqeZyd4dZ1jvhTVqvbTLvyTJ"));
-    }
-
-    private byte[] getSecret(String walletImportFormat) throws IOException {
-        byte[] bytes = Base58.decode(walletImportFormat);
-        if (bytes[0] != (byte) 0x80)
-            throw new IOException("Unknown format: 0x80 expected as first byte, but secret " + walletImportFormat + " was " + bytes[0]);
-        if (bytes.length != 37)
-            throw new IOException("Unknown format: 37 bytes expected, but secret " + walletImportFormat + " was " + bytes.length + " long");
-
-        byte[] hash = security().doubleSha256(bytes, 33);
-        for (int i = 0; i < 4; i++) {
-            if (hash[i] != bytes[33 + i]) throw new IOException("Hash check failed for secret " + walletImportFormat);
-        }
-        return Arrays.copyOfRange(bytes, 1, 33);
-    }
-
-    @Test
-    public void testV4AddressImport() throws IOException {
-        assertEquals(4, new BitmessageAddress("BM-2cV5f9EpzaYARxtoruSpa6pDoucSf9ZNke").getVersion());
-        byte[] privsigningkey = getSecret("5KMWqfCyJZGFgW6QrnPJ6L9Gatz25B51y7ErgqNr1nXUVbtZbdU");
-        byte[] privencryptionkey = getSecret("5JXXWEuhHQEPk414SzEZk1PHDRi8kCuZd895J7EnKeQSahJPxGz");
-        BitmessageAddress address = new BitmessageAddress(new PrivateKey(privsigningkey, privencryptionkey,
-                security().createPubkey(4, 1, privsigningkey, privencryptionkey, 320, 14000)));
-        assertEquals("BM-2cV5f9EpzaYARxtoruSpa6pDoucSf9ZNke", address.getAddress());
-    }
-
-    private void assertHexEquals(String hex, byte[] bytes) {
-        assertEquals(hex.toLowerCase(), Strings.hex(bytes).toString().toLowerCase());
-    }
-}