Added import/export to the demo app

- discovered private key length was wrong - fixed
- as things are broken anyway, refactored flyway migrations - you'll need to delete ~/jabit.*.db

demo/build.gradle

@@ -22,6 +22,7 @@ dependencies {
     compile project(':domain')
     compile project(':networking')
     compile project(':repositories')
+    compile project(':wif')
     compile 'org.slf4j:slf4j-simple:1.7.12'
     compile 'args4j:args4j:2.32'
     testCompile 'junit:junit:4.11'

demo/src/main/java/ch/dissem/bitmessage/demo/Main.java

@@ -16,6 +16,16 @@
 
 package ch.dissem.bitmessage.demo;
 
+import ch.dissem.bitmessage.BitmessageContext;
+import ch.dissem.bitmessage.networking.NetworkNode;
+import ch.dissem.bitmessage.repository.*;
+import ch.dissem.bitmessage.wif.WifExporter;
+import ch.dissem.bitmessage.wif.WifImporter;
+import org.kohsuke.args4j.CmdLineException;
+import org.kohsuke.args4j.CmdLineParser;
+import org.kohsuke.args4j.Option;
+
+import java.io.File;
 import java.io.IOException;
 
 public class Main {
@@ -25,6 +35,40 @@ public class Main {
         if (System.getProperty("org.slf4j.simpleLogger.logFile") == null)
             System.setProperty("org.slf4j.simpleLogger.logFile", "./jabit.log");
 
-        new Application();
+        CmdLineOptions options = new CmdLineOptions();
+        CmdLineParser parser = new CmdLineParser(options);
+        try {
+            parser.parseArgument(args);
+        } catch (CmdLineException e) {
+            parser.printUsage(System.err);
+        }
+        if (options.exportWIF != null || options.importWIF != null) {
+            JdbcConfig jdbcConfig = new JdbcConfig();
+            BitmessageContext ctx = new BitmessageContext.Builder()
+                    .addressRepo(new JdbcAddressRepository(jdbcConfig))
+                    .inventory(new JdbcInventory(jdbcConfig))
+                    .nodeRegistry(new MemoryNodeRegistry())
+                    .messageRepo(new JdbcMessageRepository(jdbcConfig))
+                    .networkHandler(new NetworkNode())
+                    .port(48444)
+                    .build();
+
+            if (options.exportWIF != null) {
+                new WifExporter(ctx).addAll().write(options.exportWIF);
+            }
+            if (options.importWIF != null) {
+                new WifImporter(ctx, options.importWIF).importAll();
+            }
+        } else {
+            new Application();
+        }
+    }
+
+    private static class CmdLineOptions {
+        @Option(name = "-import", usage = "Import from keys.dat or other WIF file.")
+        private File importWIF;
+
+        @Option(name = "-export", usage = "Export to WIF file.")
+        private File exportWIF;
     }
 }

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

@@ -17,6 +17,7 @@
 package ch.dissem.bitmessage.entity.payload;
 
 import ch.dissem.bitmessage.entity.Streamable;
+import ch.dissem.bitmessage.entity.valueobject.PrivateKey;
 import ch.dissem.bitmessage.exception.DecryptionFailedException;
 import ch.dissem.bitmessage.utils.*;
 import org.bouncycastle.crypto.BufferedBlockCipher;
@@ -37,6 +38,8 @@ import java.io.*;
 import java.math.BigInteger;
 import java.util.Arrays;
 
+import static ch.dissem.bitmessage.entity.valueobject.PrivateKey.PRIVATE_KEY_SIZE;
+
 
 public class CryptoBox implements Streamable {
     private static final Logger LOG = LoggerFactory.getLogger(CryptoBox.class);
@@ -59,7 +62,7 @@ public class CryptoBox implements Streamable {
         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(64);
+        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.
         ECPoint P = K.multiply(Security.keyToBigInt(r)).normalize();

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

@@ -32,8 +32,9 @@ import java.io.*;
  * Created by chris on 18.04.15.
  */
 public class PrivateKey implements Streamable {
-    private final byte[] privateSigningKey; // 32 bytes
+    public static final int PRIVATE_KEY_SIZE = 32;
-    private final byte[] privateEncryptionKey; // 32 bytes
+    private final byte[] privateSigningKey;
+    private final byte[] privateEncryptionKey;
 
     private final Pubkey pubkey;
 
@@ -44,8 +45,8 @@ public class PrivateKey implements Streamable {
         byte[] pubEK;
         byte[] ripe;
         do {
-            privSK = Security.randomBytes(64);
+            privSK = Security.randomBytes(PRIVATE_KEY_SIZE);
-            privEK = Security.randomBytes(64);
+            privEK = Security.randomBytes(PRIVATE_KEY_SIZE);
             pubSK = Security.createPublicKey(privSK).getEncoded(false);
             pubEK = Security.createPublicKey(privEK).getEncoded(false);
             ripe = Pubkey.getRipe(pubSK, pubEK);

repositories/src/main/resources/db/migration/V1.0__Create_node_table.sql

@@ -1,9 +0,0 @@
-CREATE TABLE Node (
-  ip       BINARY(16) NOT NULL,
-  port     INT        NOT NULL,
-  stream   BIGINT     NOT NULL,
-  services BIGINT     NOT NULL,
-  time     BIGINT     NOT NULL,
-
-  PRIMARY KEY (ip, port, stream)
-);

repositories/src/main/resources/db/migration/V1.2__Create_table_message.sql

@@ -34,7 +34,7 @@ CREATE TABLE Message_Label (
 );
 
 INSERT INTO Label(label, type, color, ord) VALUES ('Inbox', 'INBOX', X'FF0000FF', 0);
-INSERT INTO Label(label, type, color, ord) VALUES ('Drafts', 'DRAFTS', X'FFFF9900', 10);
+INSERT INTO Label(label, type, color, ord) VALUES ('Drafts', 'DRAFT', X'FFFF9900', 10);
 INSERT INTO Label(label, type, color, ord) VALUES ('Sent', 'SENT', X'FFFFFF00', 20);
 INSERT INTO Label(label, type, ord) VALUES ('Unread', 'UNREAD', 90);
 INSERT INTO Label(label, type, ord) VALUES ('Trash', 'TRASH', 100);

repositories/src/main/resources/db/migration/V2.0__Update_label.sql

@@ -1 +0,0 @@
-UPDATE Label SET type = 'DRAFT' WHERE type = 'DRAFTS';

repositories/src/main/resources/db/migration/V3.0__Drop_node_table.sql

@@ -1 +0,0 @@
-DROP TABLE Node;

wif/src/main/java/ch/dissem/bitmessage/wif/WifExporter.java

@@ -26,6 +26,8 @@ import org.ini4j.Profile;
 import java.io.*;
 import java.util.Collection;
 
+import static ch.dissem.bitmessage.entity.valueobject.PrivateKey.PRIVATE_KEY_SIZE;
+
 /**
  * @author Christian Basler
  */
@@ -38,19 +40,21 @@ public class WifExporter {
         this.ini = new Ini();
     }
 
-    public void addAll() {
+    public WifExporter addAll() {
         for (BitmessageAddress identity : ctx.addresses().getIdentities()) {
             addIdentity(identity);
         }
+        return this;
     }
 
-    public void addAll(Collection<BitmessageAddress> identities) {
+    public WifExporter addAll(Collection<BitmessageAddress> identities) {
         for (BitmessageAddress identity : identities) {
             addIdentity(identity);
         }
+        return this;
     }
 
-    public void addIdentity(BitmessageAddress identity) {
+    public WifExporter addIdentity(BitmessageAddress identity) {
         Profile.Section section = ini.add(identity.getAddress());
         section.add("label", identity.getAlias());
         section.add("enabled", true);
@@ -59,22 +63,26 @@ public class WifExporter {
         section.add("payloadlengthextrabytes", identity.getPubkey().getExtraBytes());
         section.add("privsigningkey", exportSecret(identity.getPrivateKey().getPrivateSigningKey()));
         section.add("privencryptionkey", exportSecret(identity.getPrivateKey().getPrivateEncryptionKey()));
+        return this;
     }
 
     private String exportSecret(byte[] privateKey) {
-        if (privateKey.length != 32) {
+        if (privateKey.length != PRIVATE_KEY_SIZE) {
             throw new IllegalArgumentException("Private key of length 32 expected, but was " + privateKey.length);
         }
         byte[] result = new byte[37];
         result[0] = (byte) 0x80;
-        System.arraycopy(privateKey, 0, result, 1, 32);
+        System.arraycopy(privateKey, 0, result, 1, PRIVATE_KEY_SIZE);
-        byte[] hash = Security.doubleSha256(result, 33);
+        byte[] hash = Security.doubleSha256(result, PRIVATE_KEY_SIZE + 1);
-        System.arraycopy(hash, 0, result, 33, 4);
+        System.arraycopy(hash, 0, result, PRIVATE_KEY_SIZE + 1, 4);
         return Base58.encode(result);
     }
 
     public void write(File file) throws IOException {
-        write(new FileOutputStream(file));
+        file.createNewFile();
+        try (FileOutputStream out = new FileOutputStream(file)) {
+            write(out);
+        }
     }
 
     public void write(OutputStream out) throws IOException {

wif/src/main/java/ch/dissem/bitmessage/wif/WifImporter.java

@@ -95,19 +95,22 @@ public class WifImporter {
         return identities;
     }
 
-    public void importAll() {
+    public WifImporter importAll() {
         for (BitmessageAddress identity : identities) {
             ctx.addresses().save(identity);
         }
+        return this;
     }
 
-    public void importAll(Collection<BitmessageAddress> identities) {
+    public WifImporter importAll(Collection<BitmessageAddress> identities) {
         for (BitmessageAddress identity : identities) {
             ctx.addresses().save(identity);
         }
+        return this;
     }
 
-    public void importIdentity(BitmessageAddress identity) {
+    public WifImporter importIdentity(BitmessageAddress identity) {
         ctx.addresses().save(identity);
+        return this;
     }
 }

wif/src/test/java/ch/dissem/bitmessage/wif/WifImporterTest.java

@@ -64,6 +64,8 @@ public class WifImporterTest {
         assertEquals(320, identity.getPubkey().getNonceTrialsPerByte());
         assertEquals(14000, identity.getPubkey().getExtraBytes());
         assertNotNull("Private key", identity.getPrivateKey());
+        assertEquals(32, identity.getPrivateKey().getPrivateEncryptionKey().length);
+        assertEquals(32, identity.getPrivateKey().getPrivateSigningKey().length);
     }
 
     @Test