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1 package com.trilead.ssh2.packets;
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2
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3 import java.io.IOException;
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4
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5 import java.math.BigInteger;
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6
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7 /**
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8 * PacketKexDhGexGroup.
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9 *
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10 * @author Christian Plattner, plattner@trilead.com
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11 * @version $Id: PacketKexDhGexGroup.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
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12 */
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13 public class PacketKexDhGexGroup {
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14 byte[] payload;
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15
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16 BigInteger p;
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17 BigInteger g;
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18
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19 public PacketKexDhGexGroup(byte payload[], int off, int len) throws IOException {
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20 this.payload = new byte[len];
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21 System.arraycopy(payload, off, this.payload, 0, len);
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22 TypesReader tr = new TypesReader(payload, off, len);
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23 int packet_type = tr.readByte();
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24
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25 if (packet_type != Packets.SSH_MSG_KEX_DH_GEX_GROUP)
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26 throw new IllegalArgumentException(
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27 "This is not a SSH_MSG_KEX_DH_GEX_GROUP! (" + packet_type
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28 + ")");
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29
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30 p = tr.readMPINT();
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31 g = tr.readMPINT();
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32
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33 if (tr.remain() != 0)
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34 throw new IOException("PADDING IN SSH_MSG_KEX_DH_GEX_GROUP!");
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35 }
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36
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37 public BigInteger getG() {
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38 return g;
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39 }
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40
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41 public BigInteger getP() {
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42 return p;
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43 }
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44 }
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