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annotate src/ch/ethz/ssh2/transport/KexManager.java @ 300:349847b2e318 ganymed

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add ecdsa key support everywhere
author Carl Byington <carl@five-ten-sg.com>
date Tue, 29 Jul 2014 18:36:57 -0700
parents 486df527ddc5
children ca5dd224a87b
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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
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18 import ch.ethz.ssh2.ConnectionInfo;
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19 import ch.ethz.ssh2.DHGexParameters;
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20 import ch.ethz.ssh2.compression.CompressionFactory;
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21 import ch.ethz.ssh2.compression.Compressor;
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22 import ch.ethz.ssh2.crypto.CryptoWishList;
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23 import ch.ethz.ssh2.crypto.KeyMaterial;
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24 import ch.ethz.ssh2.crypto.cipher.BlockCipher;
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25 import ch.ethz.ssh2.crypto.cipher.BlockCipherFactory;
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26 import ch.ethz.ssh2.crypto.digest.MAC;
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27 import ch.ethz.ssh2.log.Logger;
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28 import ch.ethz.ssh2.packets.PacketKexInit;
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29 import ch.ethz.ssh2.packets.PacketNewKeys;
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30 import java.security.interfaces.DSAPrivateKey;
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31 import java.security.interfaces.RSAPrivateKey;
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32 import java.security.interfaces.ECPrivateKey;
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33
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34 /**
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35 * @version $Id: KexManager.java 152 2014-04-28 11:02:23Z dkocher@sudo.ch $
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36 */
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37 public abstract class KexManager implements MessageHandler {
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38 protected static final Logger log = Logger.getLogger(KexManager.class);
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39
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40 private static final Set<String> HOSTKEY_ALGS = new TreeSet<String>();
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41 static {
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42 HOSTKEY_ALGS.add("ecdsa-sha2-nistp256");
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43 HOSTKEY_ALGS.add("ecdsa-sha2-nistp384");
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44 HOSTKEY_ALGS.add("ecdsa-sha2-nistp521");
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45 HOSTKEY_ALGS.add("ssh-rsa");
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46 HOSTKEY_ALGS.add("ssh-dss");
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47 }
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48
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49 private static final Set<String> KEX_ALGS = new TreeSet<String>();
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50 static {
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51 KEX_ALGS.add("ecdh-sha2-nistp256");
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52 KEX_ALGS.add("ecdh-sha2-nistp384");
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53 KEX_ALGS.add("ecdh-sha2-nistp521");
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54 KEX_ALGS.add("diffie-hellman-group-exchange-sha256");
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55 KEX_ALGS.add("diffie-hellman-group-exchange-sha1");
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56 KEX_ALGS.add("diffie-hellman-group14-sha1");
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57 KEX_ALGS.add("diffie-hellman-group1-sha1");
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58 }
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59
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60 KexState kxs;
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61 int kexCount = 0;
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62 KeyMaterial km;
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63 byte[] sessionId;
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64 ClientServerHello csh;
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65
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66 final Object accessLock = new Object();
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67 ConnectionInfo lastConnInfo = null;
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68
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69 boolean connectionClosed = false;
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70
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71 boolean ignore_next_kex_packet = false;
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72
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73 final TransportManager tm;
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74
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75 CryptoWishList nextKEXcryptoWishList;
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76 DHGexParameters nextKEXdhgexParameters;
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77 KeyPair nextKEXdsakey;
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78 KeyPair nextKEXrsakey;
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79 KeyPair nextKEXeckey;
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80
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81 final SecureRandom rnd;
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82
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83 public KexManager(TransportManager tm, ClientServerHello csh, CryptoWishList initialCwl, SecureRandom rnd) {
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84 this.tm = tm;
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85 this.csh = csh;
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86 this.nextKEXcryptoWishList = initialCwl;
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87 this.nextKEXdhgexParameters = new DHGexParameters();
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88 this.rnd = rnd;
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89 }
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90
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91 public ConnectionInfo getOrWaitForConnectionInfo(int minKexCount) throws IOException {
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92 synchronized(accessLock) {
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93 while(true) {
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94 if((lastConnInfo != null) && (lastConnInfo.keyExchangeCounter >= minKexCount)) {
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95 return lastConnInfo;
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96 }
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97 if(connectionClosed) {
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98 throw tm.getReasonClosedCause();
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99 }
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100 try {
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101 accessLock.wait();
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102 }
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103 catch(InterruptedException e) {
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104 throw new InterruptedIOException(e.getMessage());
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105 }
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106 }
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107 }
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108 }
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109
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110 private String getFirstMatch(String[] client, String[] server) throws NegotiateException {
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111 if(client == null || server == null) {
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112 throw new IllegalArgumentException();
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113 }
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114 for(String c : client) {
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115 for(String s : server) {
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116 if(c.equals(s)) {
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117 return c;
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118 }
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119 }
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120 }
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121 throw new NegotiateException(String.format("Negotiation failed for %s", Arrays.toString(server)));
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122 }
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123
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124 private boolean compareFirstOfNameList(String[] a, String[] b) {
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125 if(a == null || b == null) {
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126 throw new IllegalArgumentException();
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127 }
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128 if((a.length == 0) && (b.length == 0)) {
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129 return true;
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130 }
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131 if((a.length == 0) || (b.length == 0)) {
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132 return false;
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133 }
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134 return (a[0].equals(b[0]));
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135 }
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136
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137 private boolean isGuessOK(KexParameters cpar, KexParameters spar) {
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138 if(cpar == null || spar == null) {
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139 throw new IllegalArgumentException();
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140 }
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141 if(!compareFirstOfNameList(cpar.kex_algorithms, spar.kex_algorithms)) {
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142 return false;
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diff changeset
143 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
144 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
145 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
146 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
147
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 * 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
150 * 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
151 * guessed right!
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
154 return true;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
157 protected NegotiatedParameters mergeKexParameters(KexParameters client, KexParameters server)
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
158 throws NegotiateException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
159 NegotiatedParameters np = new NegotiatedParameters();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
160
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
161 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
162
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
163 log.info("kex_algo=" + np.kex_algo);
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 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
166 server.server_host_key_algorithms);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
167
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
168 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
169
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
170 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
171 server.encryption_algorithms_client_to_server);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
172 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
173 server.encryption_algorithms_server_to_client);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
174
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
175 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
176 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
177
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
178 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
179 server.mac_algorithms_client_to_server);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
180 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
181 server.mac_algorithms_server_to_client);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
182
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
183 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
184 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
185
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,
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
187 server.compression_algorithms_client_to_server);
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,
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
189 server.compression_algorithms_server_to_client);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
190
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
191 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
192 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
193
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
194 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
195 server.languages_client_to_server);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
196
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
197 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
198 server.languages_server_to_client);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
199
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
200 if(isGuessOK(client, server)) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
201 np.guessOK = true;
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 return np;
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
300
349847b2e318 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 285
diff changeset
206 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
207 throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
208 nextKEXcryptoWishList = cwl;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
209 nextKEXdhgexParameters = dhgex;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
210 nextKEXdsakey = dsa;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
211 nextKEXrsakey = rsa;
300
349847b2e318 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 285
diff changeset
212 nextKEXeckey = ec;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
213
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
214 if(kxs == null) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
215 kxs = new KexState();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
216 kxs.local_dsa_key = dsa;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
217 kxs.local_rsa_key = rsa;
300
349847b2e318 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 285
diff changeset
218 kxs.local_ec_key = ec;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
219 kxs.dhgexParameters = nextKEXdhgexParameters;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
220 kxs.localKEX = new PacketKexInit(nextKEXcryptoWishList, rnd);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
221 tm.sendKexMessage(kxs.localKEX.getPayload());
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 }
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 private boolean establishKeyMaterial() throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
226 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
227 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
228 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
229 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
230
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
231 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
232 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
233 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
234
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
235 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
236 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
237 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
238 catch(IllegalArgumentException e) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
239 return false;
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 return true;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
244 protected void finishKex(boolean clientMode) throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
245 if(sessionId == null) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
246 sessionId = kxs.H;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
247 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
248
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
249 establishKeyMaterial();
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 /* 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
252
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
253 PacketNewKeys ign = new PacketNewKeys();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
254 tm.sendKexMessage(ign.getPayload());
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
255
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
256 BlockCipher cbc;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
257 MAC mac;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
258 Compressor comp;
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 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
262 : 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
263 : 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
264 : km.initial_iv_server_to_client);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
265
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
266 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
267 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
268 ? 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
269 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
270 catch(DigestException e) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
271 throw new IOException(e);
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 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
275 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
276 catch(IllegalArgumentException f) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
277 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
278 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
279
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
280 tm.changeSendCipher(cbc, mac);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
281 tm.changeSendCompression(comp);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
282 tm.kexFinished();
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283 }
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284
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285 public static String[] getDefaultServerHostkeyAlgorithmList() {
300
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286 return HOSTKEY_ALGS.toArray(new String[HOSTKEY_ALGS.size()]);
273
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287 }
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288
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289 public static void checkServerHostkeyAlgorithmsList(String[] algos) {
300
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290 for (final String algo : algos) {
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291 if (!HOSTKEY_ALGS.contains(algo))
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292 throw new IllegalArgumentException("Unknown server host key algorithm '" + algo + "'");
273
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293 }
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294 }
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295
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296 public static String[] getDefaultClientKexAlgorithmList() {
300
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297 return KEX_ALGS.toArray(new String[KEX_ALGS.size()]);
273
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298 }
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299
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300 public static String[] getDefaultServerKexAlgorithmList() {
300
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301 return KEX_ALGS.toArray(new String[KEX_ALGS.size()]);
273
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302 }
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303
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304 public static void checkKexAlgorithmList(String[] algos) {
300
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305 for (final String algo : algos) {
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306 if (!KEX_ALGS.contains(algo))
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307 throw new IllegalArgumentException("Unknown kex algorithm '" + algo + "'");
273
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308 }
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309 }
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310 }