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comparison src/ch/ethz/ssh2/packets/PacketKexDHInit.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: PacketKexDHInit.java 160 2014-05-01 14:30:26Z dkocher@sudo.ch $
16 */
17 public final class PacketKexDHInit {
18
19 private final byte[] payload;
20
21 private final BigInteger e;
22
23 public PacketKexDHInit(BigInteger e) {
24 this.e = e;
25 TypesWriter tw = new TypesWriter();
26 tw.writeByte(Packets.SSH_MSG_KEXDH_INIT);
27 tw.writeMPInt(e);
28 payload = tw.getBytes();
29 }
30
31 public PacketKexDHInit(byte payload[]) throws IOException {
32 this.payload = payload;
33
34 TypesReader tr = new TypesReader(payload);
35
36 int packet_type = tr.readByte();
37
38 if(packet_type != Packets.SSH_MSG_KEXDH_INIT) {
39 throw new PacketTypeException(packet_type);
40 }
41
42 e = tr.readMPINT();
43
44 if(tr.remain() != 0) {
45 throw new PacketFormatException(String.format("Padding in %s", Packets.getMessageName(packet_type)));
46 }
47 }
48
49 public BigInteger getE() {
50 return e;
51 }
52
53 public byte[] getPayload() {
54 return payload;
55 }
56 }