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comparison src/ch/ethz/ssh2/packets/PacketKexDHReply.java @ 273:91a31873c42a ganymed

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start conversion from trilead to ganymed
author Carl Byington <carl@five-ten-sg.com>
date Fri, 18 Jul 2014 11:21:46 -0700
parents
children 071eccdff8ea
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272:ce2f4e397703 273:91a31873c42a
1 /*
2 * Copyright (c) 2006-2011 Christian Plattner. All rights reserved.
3 * Please refer to the LICENSE.txt for licensing details.
4 */
5 package ch.ethz.ssh2.packets;
6
7 import java.io.IOException;
8 import java.math.BigInteger;
9
10 import ch.ethz.ssh2.PacketFormatException;
11 import ch.ethz.ssh2.PacketTypeException;
12
13 /**
14 * @author Christian Plattner
15 * @version $Id: PacketKexDHReply.java 160 2014-05-01 14:30:26Z dkocher@sudo.ch $
16 */
17 public final class PacketKexDHReply {
18
19 private final byte[] payload;
20
21 private final byte[] hostKey;
22 private final BigInteger f;
23 private final byte[] signature;
24
25 public PacketKexDHReply(byte[] hostKey, BigInteger f, byte[] signature) {
26 this.hostKey = hostKey;
27 this.f = f;
28 this.signature = signature;
29 TypesWriter tw = new TypesWriter();
30 tw.writeByte(Packets.SSH_MSG_KEXDH_REPLY);
31 tw.writeString(hostKey, 0, hostKey.length);
32 tw.writeMPInt(f);
33 tw.writeString(signature, 0, signature.length);
34 payload = tw.getBytes();
35 }
36
37 public PacketKexDHReply(byte payload[]) throws IOException {
38 this.payload = payload;
39
40 TypesReader tr = new TypesReader(payload);
41
42 int packet_type = tr.readByte();
43
44 if(packet_type != Packets.SSH_MSG_KEXDH_REPLY) {
45 throw new PacketTypeException(packet_type);
46 }
47 hostKey = tr.readByteString();
48 f = tr.readMPINT();
49 signature = tr.readByteString();
50
51 if(tr.remain() != 0) {
52 throw new PacketFormatException(String.format("Padding in %s", Packets.getMessageName(packet_type)));
53 }
54 }
55
56 public byte[] getPayload() {
57 return payload;
58 }
59
60 public BigInteger getF() {
61 return f;
62 }
63
64 public byte[] getHostKey() {
65 return hostKey;
66 }
67
68 public byte[] getSignature() {
69 return signature;
70 }
71 }