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annotate app/src/main/java/ch/ethz/ssh2/packets/PacketKexDHInit.java @ 493:0a17c6e7cb0f stable-1.9.4-3

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improve Makefile
author Carl Byington <carl@five-ten-sg.com>
date Tue, 15 Feb 2022 14:07:00 -0800
parents d29cce60f393
children
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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: PacketKexDHInit.java 160 2014-05-01 14:30:26Z dkocher@sudo.ch $
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16 */
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17 public final class PacketKexDHInit {
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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 BigInteger e;
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22
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23 public PacketKexDHInit(BigInteger e) {
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24 this.e = e;
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25 TypesWriter tw = new TypesWriter();
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26 tw.writeByte(Packets.SSH_MSG_KEXDH_INIT);
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27 tw.writeMPInt(e);
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28 payload = tw.getBytes();
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29 }
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31 public PacketKexDHInit(byte payload[]) throws IOException {
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32 this.payload = payload;
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33 TypesReader tr = new TypesReader(payload);
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34 int packet_type = tr.readByte();
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35
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36 if (packet_type != Packets.SSH_MSG_KEXDH_INIT) {
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37 throw new PacketTypeException(packet_type);
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38 }
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40 e = tr.readMPINT();
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42 if (tr.remain() != 0) {
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43 throw new PacketFormatException(String.format("Padding in %s", Packets.getMessageName(packet_type)));
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44 }
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45 }
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46
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47 public BigInteger getE() {
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48 return e;
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49 }
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50
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51 public byte[] getPayload() {
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52 return payload;
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53 }
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54 }