24 */ |
24 */ |
25 |
25 |
26 package sun.security.ssl; |
26 package sun.security.ssl; |
27 |
27 |
28 import java.io.IOException; |
28 import java.io.IOException; |
29 import java.util.ArrayList; |
29 import java.nio.ByteBuffer; |
30 import java.util.Collection; |
30 import java.text.MessageFormat; |
31 |
31 import java.util.LinkedList; |
|
32 import java.util.List; |
|
33 import java.util.Locale; |
32 import javax.net.ssl.SSLProtocolException; |
34 import javax.net.ssl.SSLProtocolException; |
33 |
35 import sun.security.ssl.SSLExtension.ExtensionConsumer; |
34 /* |
36 import sun.security.ssl.SSLExtension.SSLExtensionSpec; |
35 * [RFC5246] The client uses the "signature_algorithms" extension to |
37 import sun.security.ssl.SSLHandshake.HandshakeMessage; |
36 * indicate to the server which signature/hash algorithm pairs may be |
38 |
37 * used in digital signatures. The "extension_data" field of this |
39 /** |
38 * extension contains a "supported_signature_algorithms" value. |
40 * Pack of the "signature_algorithms" extensions [RFC 5246]. |
39 * |
|
40 * enum { |
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41 * none(0), md5(1), sha1(2), sha224(3), sha256(4), sha384(5), |
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42 * sha512(6), (255) |
|
43 * } HashAlgorithm; |
|
44 * |
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45 * enum { anonymous(0), rsa(1), dsa(2), ecdsa(3), (255) } |
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46 * SignatureAlgorithm; |
|
47 * |
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48 * struct { |
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49 * HashAlgorithm hash; |
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50 * SignatureAlgorithm signature; |
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51 * } SignatureAndHashAlgorithm; |
|
52 * |
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53 * SignatureAndHashAlgorithm |
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54 * supported_signature_algorithms<2..2^16-2>; |
|
55 */ |
41 */ |
56 final class SignatureAlgorithmsExtension extends HelloExtension { |
42 final class SignatureAlgorithmsExtension { |
57 |
43 static final HandshakeProducer chNetworkProducer = |
58 private Collection<SignatureAndHashAlgorithm> algorithms; |
44 new CHSignatureSchemesProducer(); |
59 private int algorithmsLen; // length of supported_signature_algorithms |
45 static final ExtensionConsumer chOnLoadConcumer = |
60 |
46 new CHSignatureSchemesConsumer(); |
61 SignatureAlgorithmsExtension( |
47 static final HandshakeAbsence chOnLoadAbsence = |
62 Collection<SignatureAndHashAlgorithm> signAlgs) { |
48 new CHSignatureSchemesAbsence(); |
63 |
49 static final HandshakeConsumer chOnTradeConsumer = |
64 super(ExtensionType.EXT_SIGNATURE_ALGORITHMS); |
50 new CHSignatureSchemesUpdate(); |
65 |
51 |
66 algorithms = new ArrayList<SignatureAndHashAlgorithm>(signAlgs); |
52 static final HandshakeProducer crNetworkProducer = |
67 algorithmsLen = |
53 new CRSignatureSchemesProducer(); |
68 SignatureAndHashAlgorithm.sizeInRecord() * algorithms.size(); |
54 static final ExtensionConsumer crOnLoadConcumer = |
69 } |
55 new CRSignatureSchemesConsumer(); |
70 |
56 static final HandshakeAbsence crOnLoadAbsence = |
71 SignatureAlgorithmsExtension(HandshakeInStream s, int len) |
57 new CRSignatureSchemesAbsence(); |
72 throws IOException { |
58 static final HandshakeConsumer crOnTradeConsumer = |
73 super(ExtensionType.EXT_SIGNATURE_ALGORITHMS); |
59 new CRSignatureSchemesUpdate(); |
74 |
60 |
75 algorithmsLen = s.getInt16(); |
61 static final SSLStringize ssStringize = |
76 if (algorithmsLen == 0 || algorithmsLen + 2 != len) { |
62 new SignatureSchemesStringize(); |
77 throw new SSLProtocolException("Invalid " + type + " extension"); |
63 |
78 } |
64 /** |
79 |
65 * The "signature_algorithms" extension. |
80 algorithms = new ArrayList<SignatureAndHashAlgorithm>(); |
66 */ |
81 int remains = algorithmsLen; |
67 static final class SignatureSchemesSpec implements SSLExtensionSpec { |
82 int sequence = 0; |
68 final int[] signatureSchemes; |
83 while (remains > 1) { // needs at least two bytes |
69 |
84 int hash = s.getInt8(); // hash algorithm |
70 SignatureSchemesSpec(List<SignatureScheme> schemes) { |
85 int signature = s.getInt8(); // signature algorithm |
71 if (schemes != null) { |
86 |
72 signatureSchemes = new int[schemes.size()]; |
87 SignatureAndHashAlgorithm algorithm = |
73 int i = 0; |
88 SignatureAndHashAlgorithm.valueOf(hash, signature, ++sequence); |
74 for (SignatureScheme scheme : schemes) { |
89 algorithms.add(algorithm); |
75 signatureSchemes[i++] = scheme.id; |
90 remains -= 2; // one byte for hash, one byte for signature |
76 } |
91 } |
|
92 |
|
93 if (remains != 0) { |
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94 throw new SSLProtocolException("Invalid server_name extension"); |
|
95 } |
|
96 } |
|
97 |
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98 Collection<SignatureAndHashAlgorithm> getSignAlgorithms() { |
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99 return algorithms; |
|
100 } |
|
101 |
|
102 @Override |
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103 int length() { |
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104 return 6 + algorithmsLen; |
|
105 } |
|
106 |
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107 @Override |
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108 void send(HandshakeOutStream s) throws IOException { |
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109 s.putInt16(type.id); |
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110 s.putInt16(algorithmsLen + 2); |
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111 s.putInt16(algorithmsLen); |
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112 |
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113 for (SignatureAndHashAlgorithm algorithm : algorithms) { |
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114 s.putInt8(algorithm.getHashValue()); // HashAlgorithm |
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115 s.putInt8(algorithm.getSignatureValue()); // SignatureAlgorithm |
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116 } |
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117 } |
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118 |
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119 @Override |
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120 public String toString() { |
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121 StringBuilder sb = new StringBuilder(); |
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122 boolean opened = false; |
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123 for (SignatureAndHashAlgorithm signAlg : algorithms) { |
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124 if (opened) { |
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125 sb.append(", " + signAlg.getAlgorithmName()); |
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126 } else { |
77 } else { |
127 sb.append(signAlg.getAlgorithmName()); |
78 this.signatureSchemes = new int[0]; |
128 opened = true; |
79 } |
129 } |
80 } |
130 } |
81 |
131 |
82 SignatureSchemesSpec(ByteBuffer buffer) throws IOException { |
132 return "Extension " + type + ", signature_algorithms: " + sb; |
83 if (buffer.remaining() < 2) { // 2: the length of the list |
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84 throw new SSLProtocolException( |
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85 "Invalid signature_algorithms: insufficient data"); |
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86 } |
|
87 |
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88 byte[] algs = Record.getBytes16(buffer); |
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89 if (buffer.hasRemaining()) { |
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90 throw new SSLProtocolException( |
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91 "Invalid signature_algorithms: unknown extra data"); |
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92 } |
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93 |
|
94 if (algs == null || algs.length == 0 || (algs.length & 0x01) != 0) { |
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95 throw new SSLProtocolException( |
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96 "Invalid signature_algorithms: incomplete data"); |
|
97 } |
|
98 |
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99 int[] schemes = new int[algs.length / 2]; |
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100 for (int i = 0, j = 0; i < algs.length;) { |
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101 byte hash = algs[i++]; |
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102 byte sign = algs[i++]; |
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103 schemes[j++] = ((hash & 0xFF) << 8) | (sign & 0xFF); |
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104 } |
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105 |
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106 this.signatureSchemes = schemes; |
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107 } |
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108 |
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109 @Override |
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110 public String toString() { |
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111 MessageFormat messageFormat = new MessageFormat( |
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112 "\"signature schemes\": '['{0}']'", Locale.ENGLISH); |
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113 |
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114 if (signatureSchemes == null || signatureSchemes.length == 0) { |
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115 Object[] messageFields = { |
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116 "<no supported signature schemes specified>" |
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117 }; |
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118 return messageFormat.format(messageFields); |
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119 } else { |
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120 StringBuilder builder = new StringBuilder(512); |
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121 boolean isFirst = true; |
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122 for (int pv : signatureSchemes) { |
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123 if (isFirst) { |
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124 isFirst = false; |
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125 } else { |
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126 builder.append(", "); |
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127 } |
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128 |
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129 builder.append(SignatureScheme.nameOf(pv)); |
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130 } |
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131 |
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132 Object[] messageFields = { |
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133 builder.toString() |
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134 }; |
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135 |
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136 return messageFormat.format(messageFields); |
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137 } |
|
138 } |
|
139 } |
|
140 |
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141 private static final |
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142 class SignatureSchemesStringize implements SSLStringize { |
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143 @Override |
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144 public String toString(ByteBuffer buffer) { |
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145 try { |
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146 return (new SignatureSchemesSpec(buffer)).toString(); |
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147 } catch (IOException ioe) { |
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148 // For debug logging only, so please swallow exceptions. |
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149 return ioe.getMessage(); |
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150 } |
|
151 } |
|
152 } |
|
153 |
|
154 /** |
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155 * Network data producer of a "signature_algorithms" extension in |
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156 * the ClientHello handshake message. |
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157 */ |
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158 private static final |
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159 class CHSignatureSchemesProducer implements HandshakeProducer { |
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160 // Prevent instantiation of this class. |
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161 private CHSignatureSchemesProducer() { |
|
162 // blank |
|
163 } |
|
164 |
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165 @Override |
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166 public byte[] produce(ConnectionContext context, |
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167 HandshakeMessage message) throws IOException { |
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168 // The producing happens in client side only. |
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169 ClientHandshakeContext chc = (ClientHandshakeContext)context; |
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170 |
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171 // Is it a supported and enabled extension? |
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172 if (!chc.sslConfig.isAvailable( |
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173 SSLExtension.CH_SIGNATURE_ALGORITHMS)) { |
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174 if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
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175 SSLLogger.fine( |
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176 "Ignore unavailable signature_algorithms extension"); |
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177 } |
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178 return null; |
|
179 } |
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180 |
|
181 // Produce the extension. |
|
182 if (chc.localSupportedSignAlgs == null) { |
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183 chc.localSupportedSignAlgs = |
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184 SignatureScheme.getSupportedAlgorithms( |
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185 chc.algorithmConstraints, chc.activeProtocols); |
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186 } |
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187 |
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188 int vectorLen = SignatureScheme.sizeInRecord() * |
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189 chc.localSupportedSignAlgs.size(); |
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190 byte[] extData = new byte[vectorLen + 2]; |
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191 ByteBuffer m = ByteBuffer.wrap(extData); |
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192 Record.putInt16(m, vectorLen); |
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193 for (SignatureScheme ss : chc.localSupportedSignAlgs) { |
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194 Record.putInt16(m, ss.id); |
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195 } |
|
196 |
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197 // Update the context. |
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198 chc.handshakeExtensions.put( |
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199 SSLExtension.CH_SIGNATURE_ALGORITHMS, |
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200 new SignatureSchemesSpec(chc.localSupportedSignAlgs)); |
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201 |
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202 return extData; |
|
203 } |
|
204 } |
|
205 |
|
206 /** |
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207 * Network data consumer of a "signature_algorithms" extension in |
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208 * the ClientHello handshake message. |
|
209 */ |
|
210 private static final |
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211 class CHSignatureSchemesConsumer implements ExtensionConsumer { |
|
212 // Prevent instantiation of this class. |
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213 private CHSignatureSchemesConsumer() { |
|
214 // blank |
|
215 } |
|
216 |
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217 @Override |
|
218 public void consume(ConnectionContext context, |
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219 HandshakeMessage message, ByteBuffer buffer) throws IOException { |
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220 // The comsuming happens in server side only. |
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221 ServerHandshakeContext shc = (ServerHandshakeContext)context; |
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222 |
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223 // Is it a supported and enabled extension? |
|
224 if (!shc.sslConfig.isAvailable( |
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225 SSLExtension.CH_SIGNATURE_ALGORITHMS)) { |
|
226 if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
|
227 SSLLogger.fine( |
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228 "Ignore unavailable signature_algorithms extension"); |
|
229 } |
|
230 return; // ignore the extension |
|
231 } |
|
232 |
|
233 // Parse the extension. |
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234 SignatureSchemesSpec spec; |
|
235 try { |
|
236 spec = new SignatureSchemesSpec(buffer); |
|
237 } catch (IOException ioe) { |
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238 shc.conContext.fatal(Alert.UNEXPECTED_MESSAGE, ioe); |
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239 return; // fatal() always throws, make the compiler happy. |
|
240 } |
|
241 |
|
242 // Update the context. |
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243 shc.handshakeExtensions.put( |
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244 SSLExtension.CH_SIGNATURE_ALGORITHMS, spec); |
|
245 |
|
246 // No impact on session resumption. |
|
247 } |
|
248 } |
|
249 |
|
250 /** |
|
251 * After session creation consuming of a "signature_algorithms" |
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252 * extension in the ClientHello handshake message. |
|
253 */ |
|
254 private static final class CHSignatureSchemesUpdate |
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255 implements HandshakeConsumer { |
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256 // Prevent instantiation of this class. |
|
257 private CHSignatureSchemesUpdate() { |
|
258 // blank |
|
259 } |
|
260 |
|
261 @Override |
|
262 public void consume(ConnectionContext context, |
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263 HandshakeMessage message) throws IOException { |
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264 // The comsuming happens in server side only. |
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265 ServerHandshakeContext shc = (ServerHandshakeContext)context; |
|
266 |
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267 SignatureSchemesSpec spec = |
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268 (SignatureSchemesSpec)shc.handshakeExtensions.get( |
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269 SSLExtension.CH_SIGNATURE_ALGORITHMS); |
|
270 if (spec == null) { |
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271 // Ignore, no "signature_algorithms" extension requested. |
|
272 return; |
|
273 } |
|
274 |
|
275 // update the context |
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276 List<SignatureScheme> shemes = |
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277 SignatureScheme.getSupportedAlgorithms( |
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278 shc.algorithmConstraints, shc.negotiatedProtocol, |
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279 spec.signatureSchemes); |
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280 shc.peerRequestedSignatureSchemes = shemes; |
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281 |
|
282 // If no "signature_algorithms_cert" extension is present, then |
|
283 // the "signature_algorithms" extension also applies to |
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284 // signatures appearing in certificates. |
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285 SignatureSchemesSpec certSpec = |
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286 (SignatureSchemesSpec)shc.handshakeExtensions.get( |
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287 SSLExtension.CH_SIGNATURE_ALGORITHMS_CERT); |
|
288 if (certSpec == null) { |
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289 shc.peerRequestedCertSignSchemes = shemes; |
|
290 } |
|
291 |
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292 shc.handshakeSession.setPeerSupportedSignatureAlgorithms(shemes); |
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293 |
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294 if (!shc.isResumption && shc.negotiatedProtocol.useTLS13PlusSpec()) { |
|
295 if (shc.sslConfig.clientAuthType != |
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296 ClientAuthType.CLIENT_AUTH_NONE) { |
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297 shc.handshakeProducers.putIfAbsent( |
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298 SSLHandshake.CERTIFICATE_REQUEST.id, |
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299 SSLHandshake.CERTIFICATE_REQUEST); |
|
300 } |
|
301 shc.handshakeProducers.put( |
|
302 SSLHandshake.CERTIFICATE.id, |
|
303 SSLHandshake.CERTIFICATE); |
|
304 shc.handshakeProducers.putIfAbsent( |
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305 SSLHandshake.CERTIFICATE_VERIFY.id, |
|
306 SSLHandshake.CERTIFICATE_VERIFY); |
|
307 } |
|
308 } |
|
309 } |
|
310 |
|
311 /** |
|
312 * The absence processing if a "signature_algorithms" extension is |
|
313 * not present in the ClientHello handshake message. |
|
314 */ |
|
315 private static final |
|
316 class CHSignatureSchemesAbsence implements HandshakeAbsence { |
|
317 @Override |
|
318 public void absent(ConnectionContext context, |
|
319 HandshakeMessage message) throws IOException { |
|
320 // The comsuming happens in server side only. |
|
321 ServerHandshakeContext shc = (ServerHandshakeContext)context; |
|
322 |
|
323 // This is a mandatory extension for certificate authentication |
|
324 // in TLS 1.3. |
|
325 // |
|
326 // We may support the server authentication other than X.509 |
|
327 // certificate later. |
|
328 if (shc.negotiatedProtocol.useTLS13PlusSpec()) { |
|
329 shc.conContext.fatal(Alert.MISSING_EXTENSION, |
|
330 "No mandatory signature_algorithms extension in the " + |
|
331 "received CertificateRequest handshake message"); |
|
332 } |
|
333 } |
|
334 } |
|
335 |
|
336 /** |
|
337 * Network data producer of a "signature_algorithms" extension in |
|
338 * the CertificateRequest handshake message. |
|
339 */ |
|
340 private static final |
|
341 class CRSignatureSchemesProducer implements HandshakeProducer { |
|
342 // Prevent instantiation of this class. |
|
343 private CRSignatureSchemesProducer() { |
|
344 // blank |
|
345 } |
|
346 |
|
347 @Override |
|
348 public byte[] produce(ConnectionContext context, |
|
349 HandshakeMessage message) throws IOException { |
|
350 // The producing happens in server side only. |
|
351 ServerHandshakeContext shc = (ServerHandshakeContext)context; |
|
352 |
|
353 // Is it a supported and enabled extension? |
|
354 // |
|
355 // Note that this is a mandatory extension for CertificateRequest |
|
356 // handshake message in TLS 1.3. |
|
357 if (!shc.sslConfig.isAvailable( |
|
358 SSLExtension.CR_SIGNATURE_ALGORITHMS)) { |
|
359 shc.conContext.fatal(Alert.MISSING_EXTENSION, |
|
360 "No available signature_algorithms extension " + |
|
361 "for client certificate authentication"); |
|
362 return null; // make the compiler happy |
|
363 } |
|
364 |
|
365 // Produce the extension. |
|
366 if (shc.localSupportedSignAlgs == null) { |
|
367 shc.localSupportedSignAlgs = |
|
368 SignatureScheme.getSupportedAlgorithms( |
|
369 shc.algorithmConstraints, shc.activeProtocols); |
|
370 } |
|
371 |
|
372 int vectorLen = SignatureScheme.sizeInRecord() * |
|
373 shc.localSupportedSignAlgs.size(); |
|
374 byte[] extData = new byte[vectorLen + 2]; |
|
375 ByteBuffer m = ByteBuffer.wrap(extData); |
|
376 Record.putInt16(m, vectorLen); |
|
377 for (SignatureScheme ss : shc.localSupportedSignAlgs) { |
|
378 Record.putInt16(m, ss.id); |
|
379 } |
|
380 |
|
381 // Update the context. |
|
382 shc.handshakeExtensions.put( |
|
383 SSLExtension.CR_SIGNATURE_ALGORITHMS, |
|
384 new SignatureSchemesSpec(shc.localSupportedSignAlgs)); |
|
385 |
|
386 return extData; |
|
387 } |
|
388 } |
|
389 |
|
390 /** |
|
391 * Network data consumer of a "signature_algorithms" extension in |
|
392 * the CertificateRequest handshake message. |
|
393 */ |
|
394 private static final |
|
395 class CRSignatureSchemesConsumer implements ExtensionConsumer { |
|
396 // Prevent instantiation of this class. |
|
397 private CRSignatureSchemesConsumer() { |
|
398 // blank |
|
399 } |
|
400 @Override |
|
401 public void consume(ConnectionContext context, |
|
402 HandshakeMessage message, ByteBuffer buffer) throws IOException { |
|
403 // The comsuming happens in client side only. |
|
404 ClientHandshakeContext chc = (ClientHandshakeContext)context; |
|
405 |
|
406 // Is it a supported and enabled extension? |
|
407 // |
|
408 // Note that this is a mandatory extension for CertificateRequest |
|
409 // handshake message in TLS 1.3. |
|
410 if (!chc.sslConfig.isAvailable( |
|
411 SSLExtension.CR_SIGNATURE_ALGORITHMS)) { |
|
412 chc.conContext.fatal(Alert.HANDSHAKE_FAILURE, |
|
413 "No available signature_algorithms extension " + |
|
414 "for client certificate authentication"); |
|
415 return; // make the compiler happy |
|
416 } |
|
417 |
|
418 // Parse the extension. |
|
419 SignatureSchemesSpec spec; |
|
420 try { |
|
421 spec = new SignatureSchemesSpec(buffer); |
|
422 } catch (IOException ioe) { |
|
423 chc.conContext.fatal(Alert.UNEXPECTED_MESSAGE, ioe); |
|
424 return; // fatal() always throws, make the compiler happy. |
|
425 } |
|
426 |
|
427 List<SignatureScheme> knownSignatureSchemes = new LinkedList<>(); |
|
428 for (int id : spec.signatureSchemes) { |
|
429 SignatureScheme ss = SignatureScheme.valueOf(id); |
|
430 if (ss != null) { |
|
431 knownSignatureSchemes.add(ss); |
|
432 } |
|
433 } |
|
434 |
|
435 // Update the context. |
|
436 // chc.peerRequestedSignatureSchemes = knownSignatureSchemes; |
|
437 chc.handshakeExtensions.put( |
|
438 SSLExtension.CR_SIGNATURE_ALGORITHMS, spec); |
|
439 |
|
440 // No impact on session resumption. |
|
441 } |
|
442 } |
|
443 |
|
444 /** |
|
445 * After session creation consuming of a "signature_algorithms" |
|
446 * extension in the CertificateRequest handshake message. |
|
447 */ |
|
448 private static final class CRSignatureSchemesUpdate |
|
449 implements HandshakeConsumer { |
|
450 // Prevent instantiation of this class. |
|
451 private CRSignatureSchemesUpdate() { |
|
452 // blank |
|
453 } |
|
454 |
|
455 @Override |
|
456 public void consume(ConnectionContext context, |
|
457 HandshakeMessage message) throws IOException { |
|
458 // The comsuming happens in client side only. |
|
459 ClientHandshakeContext chc = (ClientHandshakeContext)context; |
|
460 |
|
461 SignatureSchemesSpec spec = |
|
462 (SignatureSchemesSpec)chc.handshakeExtensions.get( |
|
463 SSLExtension.CR_SIGNATURE_ALGORITHMS); |
|
464 if (spec == null) { |
|
465 // Ignore, no "signature_algorithms" extension requested. |
|
466 return; |
|
467 } |
|
468 |
|
469 // update the context |
|
470 List<SignatureScheme> shemes = |
|
471 SignatureScheme.getSupportedAlgorithms( |
|
472 chc.algorithmConstraints, chc.negotiatedProtocol, |
|
473 spec.signatureSchemes); |
|
474 chc.peerRequestedSignatureSchemes = shemes; |
|
475 |
|
476 // If no "signature_algorithms_cert" extension is present, then |
|
477 // the "signature_algorithms" extension also applies to |
|
478 // signatures appearing in certificates. |
|
479 SignatureSchemesSpec certSpec = |
|
480 (SignatureSchemesSpec)chc.handshakeExtensions.get( |
|
481 SSLExtension.CH_SIGNATURE_ALGORITHMS_CERT); |
|
482 if (certSpec == null) { |
|
483 chc.peerRequestedCertSignSchemes = shemes; |
|
484 } |
|
485 |
|
486 chc.handshakeSession.setPeerSupportedSignatureAlgorithms(shemes); |
|
487 } |
|
488 } |
|
489 |
|
490 /** |
|
491 * The absence processing if a "signature_algorithms" extension is |
|
492 * not present in the CertificateRequest handshake message. |
|
493 */ |
|
494 private static final |
|
495 class CRSignatureSchemesAbsence implements HandshakeAbsence { |
|
496 @Override |
|
497 public void absent(ConnectionContext context, |
|
498 HandshakeMessage message) throws IOException { |
|
499 // The comsuming happens in client side only. |
|
500 ClientHandshakeContext chc = (ClientHandshakeContext)context; |
|
501 |
|
502 // This is a mandatory extension for CertificateRequest handshake |
|
503 // message in TLS 1.3. |
|
504 chc.conContext.fatal(Alert.MISSING_EXTENSION, |
|
505 "No mandatory signature_algorithms extension in the " + |
|
506 "received CertificateRequest handshake message"); |
|
507 } |
133 } |
508 } |
134 } |
509 } |
135 |
|