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annotate src/ch/ethz/ssh2/transport/KexManager.java @ 303:a218d9cd725b ganymed

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add ecdsa key support everywhere
author Carl Byington <carl@five-ten-sg.com>
date Tue, 29 Jul 2014 20:24:24 -0700
parents ca5dd224a87b
children 071eccdff8ea
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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.Set;
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18 import java.util.TreeSet;
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19
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20 import ch.ethz.ssh2.ConnectionInfo;
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21 import ch.ethz.ssh2.DHGexParameters;
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22 import ch.ethz.ssh2.compression.CompressionFactory;
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23 import ch.ethz.ssh2.compression.Compressor;
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24 import ch.ethz.ssh2.crypto.CryptoWishList;
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25 import ch.ethz.ssh2.crypto.KeyMaterial;
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26 import ch.ethz.ssh2.crypto.cipher.BlockCipher;
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27 import ch.ethz.ssh2.crypto.cipher.BlockCipherFactory;
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28 import ch.ethz.ssh2.crypto.digest.MAC;
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29 import ch.ethz.ssh2.log.Logger;
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30 import ch.ethz.ssh2.packets.PacketKexInit;
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31 import ch.ethz.ssh2.packets.PacketNewKeys;
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32 import java.security.interfaces.DSAPrivateKey;
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33 import java.security.interfaces.RSAPrivateKey;
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34 import java.security.interfaces.ECPrivateKey;
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35
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36 /**
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37 * @version $Id: KexManager.java 152 2014-04-28 11:02:23Z dkocher@sudo.ch $
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38 */
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39 public abstract class KexManager implements MessageHandler {
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40 protected static final Logger log = Logger.getLogger(KexManager.class);
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41
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42 private static final Set<String> HOSTKEY_ALGS = new TreeSet<String>();
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43 static {
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44 HOSTKEY_ALGS.add("ecdsa-sha2-nistp256");
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45 HOSTKEY_ALGS.add("ecdsa-sha2-nistp384");
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46 HOSTKEY_ALGS.add("ecdsa-sha2-nistp521");
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47 HOSTKEY_ALGS.add("ssh-rsa");
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48 HOSTKEY_ALGS.add("ssh-dss");
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49 }
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50
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51 private static final Set<String> KEX_ALGS = new TreeSet<String>();
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52 static {
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53 KEX_ALGS.add("ecdh-sha2-nistp256");
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54 KEX_ALGS.add("ecdh-sha2-nistp384");
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55 KEX_ALGS.add("ecdh-sha2-nistp521");
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56 KEX_ALGS.add("diffie-hellman-group-exchange-sha256");
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57 KEX_ALGS.add("diffie-hellman-group-exchange-sha1");
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58 KEX_ALGS.add("diffie-hellman-group14-sha1");
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59 KEX_ALGS.add("diffie-hellman-group1-sha1");
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60 }
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61
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62 KexState kxs;
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63 int kexCount = 0;
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64 KeyMaterial km;
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65 byte[] sessionId;
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66 ClientServerHello csh;
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67
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68 final Object accessLock = new Object();
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69 ConnectionInfo lastConnInfo = null;
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70
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71 boolean connectionClosed = false;
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72
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73 boolean ignore_next_kex_packet = false;
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74
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75 final TransportManager tm;
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76
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77 CryptoWishList nextKEXcryptoWishList;
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78 DHGexParameters nextKEXdhgexParameters;
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79 KeyPair nextKEXdsakey;
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80 KeyPair nextKEXrsakey;
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81 KeyPair nextKEXeckey;
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82
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83 final SecureRandom rnd;
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84
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85 public KexManager(TransportManager tm, ClientServerHello csh, CryptoWishList initialCwl, SecureRandom rnd) {
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86 this.tm = tm;
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87 this.csh = csh;
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88 this.nextKEXcryptoWishList = initialCwl;
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89 this.nextKEXdhgexParameters = new DHGexParameters();
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90 this.rnd = rnd;
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91 }
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92
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93 public ConnectionInfo getOrWaitForConnectionInfo(int minKexCount) throws IOException {
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94 synchronized(accessLock) {
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95 while(true) {
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96 if((lastConnInfo != null) && (lastConnInfo.keyExchangeCounter >= minKexCount)) {
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97 return lastConnInfo;
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98 }
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99 if(connectionClosed) {
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100 throw tm.getReasonClosedCause();
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101 }
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102 try {
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103 accessLock.wait();
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104 }
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105 catch(InterruptedException e) {
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106 throw new InterruptedIOException(e.getMessage());
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107 }
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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 private String getFirstMatch(String[] client, String[] server) throws NegotiateException {
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113 if(client == null || server == null) {
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114 throw new IllegalArgumentException();
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115 }
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116 for(String c : client) {
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117 for(String s : server) {
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118 if(c.equals(s)) {
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119 return c;
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120 }
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121 }
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122 }
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123 throw new NegotiateException(String.format("Negotiation failed for %s", Arrays.toString(server)));
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124 }
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125
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126 private boolean compareFirstOfNameList(String[] a, String[] b) {
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127 if(a == null || b == null) {
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128 throw new IllegalArgumentException();
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129 }
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130 if((a.length == 0) && (b.length == 0)) {
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131 return true;
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132 }
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133 if((a.length == 0) || (b.length == 0)) {
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134 return false;
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135 }
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136 return (a[0].equals(b[0]));
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137 }
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138
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139 private boolean isGuessOK(KexParameters cpar, KexParameters spar) {
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140 if(cpar == null || spar == null) {
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141 throw new IllegalArgumentException();
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142 }
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parents:
diff changeset
143 if(!compareFirstOfNameList(cpar.kex_algorithms, spar.kex_algorithms)) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
144 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
145 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
146 if(!compareFirstOfNameList(cpar.server_host_key_algorithms, spar.server_host_key_algorithms)) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
147 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
148 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
149
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
150 /*
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
151 * We do NOT check here if the other algorithms can be agreed on, this
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
152 * is just a check if kex_algorithms and server_host_key_algorithms were
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
153 * guessed right!
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
154 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
155
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
156 return true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
157 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
158
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
159 protected NegotiatedParameters mergeKexParameters(KexParameters client, KexParameters server)
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
160 throws NegotiateException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
161 NegotiatedParameters np = new NegotiatedParameters();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
162
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
163 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
164
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
165 log.info("kex_algo=" + np.kex_algo);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
166
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
167 np.server_host_key_algo = getFirstMatch(client.server_host_key_algorithms,
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
168 server.server_host_key_algorithms);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
169
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
170 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
171
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
172 np.enc_algo_client_to_server = getFirstMatch(client.encryption_algorithms_client_to_server,
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
173 server.encryption_algorithms_client_to_server);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
174 np.enc_algo_server_to_client = getFirstMatch(client.encryption_algorithms_server_to_client,
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
175 server.encryption_algorithms_server_to_client);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
176
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
177 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
178 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
179
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,
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
181 server.mac_algorithms_client_to_server);
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,
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
183 server.mac_algorithms_server_to_client);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
184
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
185 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
186 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
187
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
188 np.comp_algo_client_to_server = getFirstMatch(client.compression_algorithms_client_to_server,
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
189 server.compression_algorithms_client_to_server);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
190 np.comp_algo_server_to_client = getFirstMatch(client.compression_algorithms_server_to_client,
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
191 server.compression_algorithms_server_to_client);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
192
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
193 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
194 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
195
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
196 np.lang_client_to_server = getFirstMatch(client.languages_client_to_server,
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
197 server.languages_client_to_server);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
198
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
199 np.lang_server_to_client = getFirstMatch(client.languages_server_to_client,
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
200 server.languages_server_to_client);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
201
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
202 if(isGuessOK(client, server)) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
203 np.guessOK = true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
204 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
205 return np;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
206 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
207
300
349847b2e318 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 285
diff changeset
208 public synchronized void initiateKEX(CryptoWishList cwl, DHGexParameters dhgex, KeyPair dsa, KeyPair rsa, KeyPair ec)
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
209 throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
210 nextKEXcryptoWishList = cwl;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
211 nextKEXdhgexParameters = dhgex;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
212 nextKEXdsakey = dsa;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
213 nextKEXrsakey = rsa;
300
349847b2e318 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 285
diff changeset
214 nextKEXeckey = ec;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
215
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
216 if(kxs == null) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
217 kxs = new KexState();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
218 kxs.local_dsa_key = dsa;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
219 kxs.local_rsa_key = rsa;
300
349847b2e318 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 285
diff changeset
220 kxs.local_ec_key = ec;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
221 kxs.dhgexParameters = nextKEXdhgexParameters;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
222 kxs.localKEX = new PacketKexInit(nextKEXcryptoWishList, rnd);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
223 tm.sendKexMessage(kxs.localKEX.getPayload());
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
224 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
225 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
226
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
227 private boolean establishKeyMaterial() throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
228 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
229 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
230 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
231 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
232
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
233 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
234 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
235 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
236
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
237 km = KeyMaterial.create("SHA1", kxs.H, kxs.K, sessionId, enc_cs_key_len, enc_cs_block_len, mac_cs_key_len,
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
238 enc_sc_key_len, enc_sc_block_len, mac_sc_key_len);
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 catch(IllegalArgumentException e) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
241 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
242 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
243 return true;
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 protected void finishKex(boolean clientMode) throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
247 if(sessionId == null) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
248 sessionId = kxs.H;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
249 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
250
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
251 establishKeyMaterial();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
252
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
253 /* Tell the other side that we start using the new material */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
254
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
255 PacketNewKeys ign = new PacketNewKeys();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
256 tm.sendKexMessage(ign.getPayload());
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
257
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
258 BlockCipher cbc;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
259 MAC mac;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
260 Compressor comp;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
261
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
262 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
263 cbc = BlockCipherFactory.createCipher(clientMode ? kxs.np.enc_algo_client_to_server
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
264 : kxs.np.enc_algo_server_to_client, true, clientMode ? km.enc_key_client_to_server
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
265 : km.enc_key_server_to_client, clientMode ? km.initial_iv_client_to_server
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
266 : km.initial_iv_server_to_client);
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 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
269 mac = new MAC(clientMode ? kxs.np.mac_algo_client_to_server : kxs.np.mac_algo_server_to_client, clientMode
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
270 ? km.integrity_key_client_to_server : km.integrity_key_server_to_client);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
271 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
272 catch(DigestException e) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
273 throw new IOException(e);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
274 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
275
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
276 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
277 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
278 catch(IllegalArgumentException f) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
279 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
280 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
281
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
282 tm.changeSendCipher(cbc, mac);
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283 tm.changeSendCompression(comp);
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284 tm.kexFinished();
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285 }
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286
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287 public static String[] getDefaultServerHostkeyAlgorithmList() {
300
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288 return HOSTKEY_ALGS.toArray(new String[HOSTKEY_ALGS.size()]);
273
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289 }
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290
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291 public static void checkServerHostkeyAlgorithmsList(String[] algos) {
300
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292 for (final String algo : algos) {
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293 if (!HOSTKEY_ALGS.contains(algo))
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294 throw new IllegalArgumentException("Unknown server host key algorithm '" + algo + "'");
273
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295 }
91a31873c42a start conversion from trilead to ganymed
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parents:
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296 }
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297
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298 public static String[] getDefaultClientKexAlgorithmList() {
300
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299 return KEX_ALGS.toArray(new String[KEX_ALGS.size()]);
273
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300 }
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301
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302 public static String[] getDefaultServerKexAlgorithmList() {
300
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303 return KEX_ALGS.toArray(new String[KEX_ALGS.size()]);
273
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304 }
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parents:
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305
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306 public static void checkKexAlgorithmList(String[] algos) {
300
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diff changeset
307 for (final String algo : algos) {
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308 if (!KEX_ALGS.contains(algo))
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diff changeset
309 throw new IllegalArgumentException("Unknown kex algorithm '" + algo + "'");
273
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310 }
91a31873c42a start conversion from trilead to ganymed
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parents:
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311 }
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parents:
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312 }