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annotate src/ch/ethz/ssh2/transport/KexManager.java @ 360:7eb24880b111

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add help files to the web documentation
author Carl Byington <carl@five-ten-sg.com>
date Mon, 04 Aug 2014 08:10:12 -0700
parents 37f4a3b506d9
children b82713cd787d
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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.transport;
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6
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7 import java.io.IOException;
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8 import java.io.InterruptedIOException;
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9 import java.security.DigestException;
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10 import java.security.KeyPair;
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11 import java.security.PrivateKey;
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12 import java.security.SecureRandom;
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13 import java.security.interfaces.DSAPrivateKey;
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14 import java.security.interfaces.RSAPrivateKey;
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15 import java.security.interfaces.ECPrivateKey;
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16 import java.util.Arrays;
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17 import java.util.ArrayList;
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18
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19 import ch.ethz.ssh2.ConnectionInfo;
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20 import ch.ethz.ssh2.DHGexParameters;
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21 import ch.ethz.ssh2.compression.CompressionFactory;
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22 import ch.ethz.ssh2.compression.Compressor;
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23 import ch.ethz.ssh2.crypto.CryptoWishList;
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24 import ch.ethz.ssh2.crypto.KeyMaterial;
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25 import ch.ethz.ssh2.crypto.cipher.BlockCipher;
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26 import ch.ethz.ssh2.crypto.cipher.BlockCipherFactory;
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27 import ch.ethz.ssh2.crypto.digest.MAC;
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28 import ch.ethz.ssh2.log.Logger;
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29 import ch.ethz.ssh2.packets.PacketKexInit;
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30 import ch.ethz.ssh2.packets.PacketNewKeys;
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31 import java.security.interfaces.DSAPrivateKey;
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32 import java.security.interfaces.RSAPrivateKey;
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33 import java.security.interfaces.ECPrivateKey;
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34
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35 /**
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36 * @version $Id: KexManager.java 152 2014-04-28 11:02:23Z dkocher@sudo.ch $
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37 */
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38 public abstract class KexManager implements MessageHandler {
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39 protected static final Logger log = Logger.getLogger(KexManager.class);
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40
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41 private static final ArrayList<String> HOSTKEY_ALGS = new ArrayList<String>();
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42 static {
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43 HOSTKEY_ALGS.add("ssh-rsa");
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44 HOSTKEY_ALGS.add("ssh-dss");
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45 HOSTKEY_ALGS.add("ecdsa-sha2-nistp256");
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46 HOSTKEY_ALGS.add("ecdsa-sha2-nistp384");
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47 HOSTKEY_ALGS.add("ecdsa-sha2-nistp521");
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48 }
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49
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50 private static final ArrayList<String> KEX_ALGS = new ArrayList<String>();
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51 static {
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52 KEX_ALGS.add("diffie-hellman-group-exchange-sha256");
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53 KEX_ALGS.add("diffie-hellman-group-exchange-sha1");
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54 KEX_ALGS.add("diffie-hellman-group14-sha1");
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55 KEX_ALGS.add("diffie-hellman-group1-sha1");
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56 KEX_ALGS.add("ecdh-sha2-nistp256");
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57 KEX_ALGS.add("ecdh-sha2-nistp384");
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58 KEX_ALGS.add("ecdh-sha2-nistp521");
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59 }
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60
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61 KexState kxs;
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62 int kexCount = 0;
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63 KeyMaterial km;
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64 byte[] sessionId;
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65 ClientServerHello csh;
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66
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67 final Object accessLock = new Object();
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68 ConnectionInfo lastConnInfo = null;
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69
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70 boolean connectionClosed = false;
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71
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72 boolean ignore_next_kex_packet = false;
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73
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74 final TransportManager tm;
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75
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76 CryptoWishList nextKEXcryptoWishList;
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77 DHGexParameters nextKEXdhgexParameters;
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78 KeyPair nextKEXdsakey;
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79 KeyPair nextKEXrsakey;
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80 KeyPair nextKEXeckey;
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81
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82 final SecureRandom rnd;
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83
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84 public KexManager(TransportManager tm, ClientServerHello csh, CryptoWishList initialCwl, SecureRandom rnd) {
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85 this.tm = tm;
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86 this.csh = csh;
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87 this.nextKEXcryptoWishList = initialCwl;
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88 this.nextKEXdhgexParameters = new DHGexParameters();
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89 this.rnd = rnd;
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90 }
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91
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92 public ConnectionInfo getOrWaitForConnectionInfo(int minKexCount) throws IOException {
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93 synchronized (accessLock) {
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94 while (true) {
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95 if ((lastConnInfo != null) && (lastConnInfo.keyExchangeCounter >= minKexCount)) {
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96 return lastConnInfo;
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97 }
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98
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99 if (connectionClosed) {
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100 throw(IOException) new IOException("Key exchange was not finished, connection is closed.").initCause(tm.getReasonClosedCause());
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101 }
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102
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103 try {
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104 accessLock.wait();
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105 }
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106 catch (InterruptedException e) {
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107 throw new InterruptedIOException(e.getMessage());
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108 }
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109 }
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110 }
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111 }
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112
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113 private String getFirstMatch(String[] client, String[] server) throws NegotiateException {
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114 if (client == null || server == null) {
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115 throw new IllegalArgumentException();
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116 }
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117
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118 for (String c : client) {
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119 for (String s : server) {
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120 if (c.equals(s)) {
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121 return c;
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122 }
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123 }
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124 }
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125
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126 throw new NegotiateException(String.format("Negotiation failed for %s", Arrays.toString(server)));
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127 }
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128
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129 private boolean compareFirstOfNameList(String[] a, String[] b) {
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130 if (a == null || b == null) {
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131 throw new IllegalArgumentException();
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132 }
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133
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134 if ((a.length == 0) && (b.length == 0)) {
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135 return true;
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136 }
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137
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138 if ((a.length == 0) || (b.length == 0)) {
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139 return false;
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140 }
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141
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142 return (a[0].equals(b[0]));
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143 }
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
144
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
145 private boolean isGuessOK(KexParameters cpar, KexParameters spar) {
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
146 if (cpar == null || spar == null) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
147 throw new IllegalArgumentException();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
148 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
149
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
150 if (!compareFirstOfNameList(cpar.kex_algorithms, spar.kex_algorithms)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
151 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
152 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
153
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
154 if (!compareFirstOfNameList(cpar.server_host_key_algorithms, spar.server_host_key_algorithms)) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
155 return false;
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
156 }
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
157
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
158 /*
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
159 * We do NOT check here if the other algorithms can be agreed on, this
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
160 * is just a check if kex_algorithms and server_host_key_algorithms were
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
161 * guessed right!
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
162 */
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
163 return true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
164 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
165
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
166 protected NegotiatedParameters mergeKexParameters(KexParameters client, KexParameters server)
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
167 throws NegotiateException {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
168 NegotiatedParameters np = new NegotiatedParameters();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
169 np.kex_algo = getFirstMatch(client.kex_algorithms, server.kex_algorithms);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
170 log.info("kex_algo=" + np.kex_algo);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
171 np.server_host_key_algo = getFirstMatch(client.server_host_key_algorithms,
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
172 server.server_host_key_algorithms);
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
173 log.info("server_host_key_algo=" + np.server_host_key_algo);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
174 np.enc_algo_client_to_server = getFirstMatch(client.encryption_algorithms_client_to_server,
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
175 server.encryption_algorithms_client_to_server);
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
176 np.enc_algo_server_to_client = getFirstMatch(client.encryption_algorithms_server_to_client,
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
177 server.encryption_algorithms_server_to_client);
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
178 log.info("enc_algo_client_to_server=" + np.enc_algo_client_to_server);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
179 log.info("enc_algo_server_to_client=" + np.enc_algo_server_to_client);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
180 np.mac_algo_client_to_server = getFirstMatch(client.mac_algorithms_client_to_server,
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
181 server.mac_algorithms_client_to_server);
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
182 np.mac_algo_server_to_client = getFirstMatch(client.mac_algorithms_server_to_client,
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
183 server.mac_algorithms_server_to_client);
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
184 log.info("mac_algo_client_to_server=" + np.mac_algo_client_to_server);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
185 log.info("mac_algo_server_to_client=" + np.mac_algo_server_to_client);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
186 np.comp_algo_client_to_server = getFirstMatch(client.compression_algorithms_client_to_server,
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
187 server.compression_algorithms_client_to_server);
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
188 np.comp_algo_server_to_client = getFirstMatch(client.compression_algorithms_server_to_client,
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
189 server.compression_algorithms_server_to_client);
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
190 log.info("comp_algo_client_to_server=" + np.comp_algo_client_to_server);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
191 log.info("comp_algo_server_to_client=" + np.comp_algo_server_to_client);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
192 np.lang_client_to_server = getFirstMatch(client.languages_client_to_server,
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
193 server.languages_client_to_server);
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
194 np.lang_server_to_client = getFirstMatch(client.languages_server_to_client,
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
195 server.languages_server_to_client);
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
196
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
197 if (isGuessOK(client, server)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
198 np.guessOK = true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
199 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
200
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
201 return np;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
202 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
203
300
349847b2e318 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 285
diff changeset
204 public synchronized void initiateKEX(CryptoWishList cwl, DHGexParameters dhgex, KeyPair dsa, KeyPair rsa, KeyPair ec)
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
205 throws IOException {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
206 nextKEXcryptoWishList = cwl;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
207 nextKEXdhgexParameters = dhgex;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
208 nextKEXdsakey = dsa;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
209 nextKEXrsakey = rsa;
300
349847b2e318 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 285
diff changeset
210 nextKEXeckey = ec;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
211
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
212 if (kxs == null) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
213 kxs = new KexState();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
214 kxs.local_dsa_key = dsa;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
215 kxs.local_rsa_key = rsa;
300
349847b2e318 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 285
diff changeset
216 kxs.local_ec_key = ec;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
217 kxs.dhgexParameters = nextKEXdhgexParameters;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
218 kxs.localKEX = new PacketKexInit(nextKEXcryptoWishList, rnd);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
219 tm.sendKexMessage(kxs.localKEX.getPayload());
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
220 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
221 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
222
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
223 private boolean establishKeyMaterial() throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
224 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
225 int mac_cs_key_len = MAC.getKeyLen(kxs.np.mac_algo_client_to_server);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
226 int enc_cs_key_len = BlockCipherFactory.getKeySize(kxs.np.enc_algo_client_to_server);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
227 int enc_cs_block_len = BlockCipherFactory.getBlockSize(kxs.np.enc_algo_client_to_server);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
228 int mac_sc_key_len = MAC.getKeyLen(kxs.np.mac_algo_server_to_client);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
229 int enc_sc_key_len = BlockCipherFactory.getKeySize(kxs.np.enc_algo_server_to_client);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
230 int enc_sc_block_len = BlockCipherFactory.getBlockSize(kxs.np.enc_algo_server_to_client);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
231 km = KeyMaterial.create("SHA1", kxs.H, kxs.K, sessionId, enc_cs_key_len, enc_cs_block_len, mac_cs_key_len,
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
232 enc_sc_key_len, enc_sc_block_len, mac_sc_key_len);
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
233 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
234 catch (IllegalArgumentException e) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
235 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
236 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
237
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
238 return true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
239 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
240
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
241 protected void finishKex(boolean clientMode) throws IOException {
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
242 if (sessionId == null) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
243 sessionId = kxs.H;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
244 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
245
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
246 establishKeyMaterial();
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
247 /* Tell the other side that we start using the new material */
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
248 PacketNewKeys ign = new PacketNewKeys();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
249 tm.sendKexMessage(ign.getPayload());
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
250 BlockCipher cbc;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
251 MAC mac;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
252 Compressor comp;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
253
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
254 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
255 cbc = BlockCipherFactory.createCipher(clientMode ? kxs.np.enc_algo_client_to_server
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
256 : kxs.np.enc_algo_server_to_client, true, clientMode ? km.enc_key_client_to_server
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
257 : km.enc_key_server_to_client, clientMode ? km.initial_iv_client_to_server
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
258 : km.initial_iv_server_to_client);
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
259
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
260 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
261 mac = new MAC(clientMode ? kxs.np.mac_algo_client_to_server : kxs.np.mac_algo_server_to_client, clientMode
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
262 ? km.integrity_key_client_to_server : km.integrity_key_server_to_client);
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
263 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
264 catch (DigestException e) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
265 throw new IOException(e);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
266 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
267
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
268 comp = CompressionFactory.createCompressor(kxs.np.comp_algo_client_to_server);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
269 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
270 catch (IllegalArgumentException f) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
271 throw new IOException(String.format("Fatal error initializing ciphers. %s", f.getMessage()));
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
272 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
274 tm.changeSendCipher(cbc, mac);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
275 tm.changeSendCompression(comp);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
276 tm.kexFinished();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
277 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
278
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
279 public static String[] getDefaultServerHostkeyAlgorithmList() {
300
349847b2e318 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 285
diff changeset
280 return HOSTKEY_ALGS.toArray(new String[HOSTKEY_ALGS.size()]);
273
91a31873c42a start conversion from trilead to ganymed
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281 }
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282
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283 public static void checkServerHostkeyAlgorithmsList(String[] algos) {
300
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284 for (final String algo : algos) {
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285 if (!HOSTKEY_ALGS.contains(algo))
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286 throw new IllegalArgumentException("Unknown server host key algorithm '" + algo + "'");
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287 }
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288 }
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289
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290 public static String[] getDefaultClientKexAlgorithmList() {
300
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291 return KEX_ALGS.toArray(new String[KEX_ALGS.size()]);
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292 }
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293
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294 public static String[] getDefaultServerKexAlgorithmList() {
300
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295 return KEX_ALGS.toArray(new String[KEX_ALGS.size()]);
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296 }
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297
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298 public static void checkKexAlgorithmList(String[] algos) {
300
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299 for (final String algo : algos) {
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300 if (!KEX_ALGS.contains(algo))
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301 throw new IllegalArgumentException("Unknown kex algorithm '" + algo + "'");
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302 }
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303 }
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304 }