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annotate src/ch/ethz/ssh2/packets/PacketKexDHReply.java @ 292:855cdc3b2ced ganymed

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start conversion from trilead to ganymed
author Carl Byington <carl@five-ten-sg.com>
date Fri, 18 Jul 2014 20:36:45 -0700
parents 91a31873c42a
children 071eccdff8ea
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1 /*
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2 * Copyright (c) 2006-2011 Christian Plattner. All rights reserved.
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3 * Please refer to the LICENSE.txt for licensing details.
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4 */
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5 package ch.ethz.ssh2.packets;
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6
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7 import java.io.IOException;
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8 import java.math.BigInteger;
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9
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10 import ch.ethz.ssh2.PacketFormatException;
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11 import ch.ethz.ssh2.PacketTypeException;
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12
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13 /**
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14 * @author Christian Plattner
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15 * @version $Id: PacketKexDHReply.java 160 2014-05-01 14:30:26Z dkocher@sudo.ch $
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16 */
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17 public final class PacketKexDHReply {
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18
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19 private final byte[] payload;
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20
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21 private final byte[] hostKey;
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22 private final BigInteger f;
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23 private final byte[] signature;
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24
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25 public PacketKexDHReply(byte[] hostKey, BigInteger f, byte[] signature) {
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26 this.hostKey = hostKey;
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27 this.f = f;
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28 this.signature = signature;
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29 TypesWriter tw = new TypesWriter();
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30 tw.writeByte(Packets.SSH_MSG_KEXDH_REPLY);
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31 tw.writeString(hostKey, 0, hostKey.length);
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32 tw.writeMPInt(f);
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33 tw.writeString(signature, 0, signature.length);
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34 payload = tw.getBytes();
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35 }
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36
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37 public PacketKexDHReply(byte payload[]) throws IOException {
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38 this.payload = payload;
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39
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40 TypesReader tr = new TypesReader(payload);
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41
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42 int packet_type = tr.readByte();
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43
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44 if(packet_type != Packets.SSH_MSG_KEXDH_REPLY) {
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45 throw new PacketTypeException(packet_type);
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46 }
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47 hostKey = tr.readByteString();
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48 f = tr.readMPINT();
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49 signature = tr.readByteString();
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50
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51 if(tr.remain() != 0) {
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52 throw new PacketFormatException(String.format("Padding in %s", Packets.getMessageName(packet_type)));
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53 }
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54 }
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55
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56 public byte[] getPayload() {
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57 return payload;
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58 }
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59
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60 public BigInteger getF() {
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61 return f;
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62 }
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63
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64 public byte[] getHostKey() {
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65 return hostKey;
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66 }
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67
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68 public byte[] getSignature() {
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69 return signature;
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70 }
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71 }