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