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| 1 | +/* | |
| 2 | + * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package com.sun.crypto.provider; | |
| 27 | + | |
| 28 | +import java.security.*; | |
| 29 | +import java.security.spec.AlgorithmParameterSpec; | |
| 30 | + | |
| 31 | +import javax.crypto.*; | |
| 32 | + | |
| 33 | +import sun.security.internal.interfaces.TlsMasterSecret; | |
| 34 | +import sun.security.internal.spec.TlsMasterSecretParameterSpec; | |
| 35 | + | |
| 36 | +import static com.sun.crypto.provider.TlsPrfGenerator.*; | |
| 37 | + | |
| 38 | +/** | |
| 39 | + * KeyGenerator implementation for the SSL/TLS master secret derivation. | |
| 40 | + * | |
| 41 | + * @author Andreas Sterbenz | |
| 42 | + * @since 1.6 | |
| 43 | + */ | |
| 44 | +public final class TlsMasterSecretGenerator extends KeyGeneratorSpi { | |
| 45 | + | |
| 46 | + private final static String MSG = "TlsMasterSecretGenerator must be " | |
| 47 | + + "initialized using a TlsMasterSecretParameterSpec"; | |
| 48 | + | |
| 49 | + private TlsMasterSecretParameterSpec spec; | |
| 50 | + | |
| 51 | + private int protocolVersion; | |
| 52 | + | |
| 53 | + public TlsMasterSecretGenerator() { | |
| 54 | + } | |
| 55 | + | |
| 56 | + protected void engineInit(SecureRandom random) { | |
| 57 | + throw new InvalidParameterException(MSG); | |
| 58 | + } | |
| 59 | + | |
| 60 | + protected void engineInit(AlgorithmParameterSpec params, | |
| 61 | + SecureRandom random) throws InvalidAlgorithmParameterException { | |
| 62 | + if (params instanceof TlsMasterSecretParameterSpec == false) { | |
| 63 | + throw new InvalidAlgorithmParameterException(MSG); | |
| 64 | + } | |
| 65 | + this.spec = (TlsMasterSecretParameterSpec)params; | |
| 66 | + if ("RAW".equals(spec.getPremasterSecret().getFormat()) == false) { | |
| 67 | + throw new InvalidAlgorithmParameterException( | |
| 68 | + "Key format must be RAW"); | |
| 69 | + } | |
| 70 | + protocolVersion = (spec.getMajorVersion() << 8) | |
| 71 | + | spec.getMinorVersion(); | |
| 72 | + if ((protocolVersion < 0x0300) || (protocolVersion > 0x0303)) { | |
| 73 | + throw new InvalidAlgorithmParameterException( | |
| 74 | + "Only SSL 3.0, TLS 1.0/1.1/1.2 supported"); | |
| 75 | + } | |
| 76 | + } | |
| 77 | + | |
| 78 | + protected void engineInit(int keysize, SecureRandom random) { | |
| 79 | + throw new InvalidParameterException(MSG); | |
| 80 | + } | |
| 81 | + | |
| 82 | + protected SecretKey engineGenerateKey() { | |
| 83 | + if (spec == null) { | |
| 84 | + throw new IllegalStateException( | |
| 85 | + "TlsMasterSecretGenerator must be initialized"); | |
| 86 | + } | |
| 87 | + SecretKey premasterKey = spec.getPremasterSecret(); | |
| 88 | + byte[] premaster = premasterKey.getEncoded(); | |
| 89 | + | |
| 90 | + int premasterMajor, premasterMinor; | |
| 91 | + if (premasterKey.getAlgorithm().equals("TlsRsaPremasterSecret")) { | |
| 92 | + // RSA | |
| 93 | + premasterMajor = premaster[0] & 0xff; | |
| 94 | + premasterMinor = premaster[1] & 0xff; | |
| 95 | + } else { | |
| 96 | + // DH, KRB5, others | |
| 97 | + premasterMajor = -1; | |
| 98 | + premasterMinor = -1; | |
| 99 | + } | |
| 100 | + | |
| 101 | + try { | |
| 102 | + byte[] master; | |
| 103 | + byte[] clientRandom = spec.getClientRandom(); | |
| 104 | + byte[] serverRandom = spec.getServerRandom(); | |
| 105 | + | |
| 106 | + if (protocolVersion >= 0x0301) { | |
| 107 | + byte[] seed = concat(clientRandom, serverRandom); | |
| 108 | + master = ((protocolVersion >= 0x0303) ? | |
| 109 | + doTLS12PRF(premaster, LABEL_MASTER_SECRET, seed, 48, | |
| 110 | + spec.getPRFHashAlg(), spec.getPRFHashLength(), | |
| 111 | + spec.getPRFBlockSize()) : | |
| 112 | + doTLS10PRF(premaster, LABEL_MASTER_SECRET, seed, 48)); | |
| 113 | + } else { | |
| 114 | + master = new byte[48]; | |
| 115 | + MessageDigest md5 = MessageDigest.getInstance("MD5"); | |
| 116 | + MessageDigest sha = MessageDigest.getInstance("SHA"); | |
| 117 | + | |
| 118 | + byte[] tmp = new byte[20]; | |
| 119 | + for (int i = 0; i < 3; i++) { | |
| 120 | + sha.update(SSL3_CONST[i]); | |
| 121 | + sha.update(premaster); | |
| 122 | + sha.update(clientRandom); | |
| 123 | + sha.update(serverRandom); | |
| 124 | + sha.digest(tmp, 0, 20); | |
| 125 | + | |
| 126 | + md5.update(premaster); | |
| 127 | + md5.update(tmp); | |
| 128 | + md5.digest(master, i << 4, 16); | |
| 129 | + } | |
| 130 | + | |
| 131 | + } | |
| 132 | + | |
| 133 | + return new TlsMasterSecretKey(master, premasterMajor, | |
| 134 | + premasterMinor); | |
| 135 | + } catch (NoSuchAlgorithmException e) { | |
| 136 | + throw new ProviderException(e); | |
| 137 | + } catch (DigestException e) { | |
| 138 | + throw new ProviderException(e); | |
| 139 | + } | |
| 140 | + } | |
| 141 | + | |
| 142 | + private static final class TlsMasterSecretKey implements TlsMasterSecret { | |
| 143 | + | |
| 144 | + private byte[] key; | |
| 145 | + private final int majorVersion, minorVersion; | |
| 146 | + | |
| 147 | + TlsMasterSecretKey(byte[] key, int majorVersion, int minorVersion) { | |
| 148 | + this.key = key; | |
| 149 | + this.majorVersion = majorVersion; | |
| 150 | + this.minorVersion = minorVersion; | |
| 151 | + } | |
| 152 | + | |
| 153 | + public int getMajorVersion() { | |
| 154 | + return majorVersion; | |
| 155 | + } | |
| 156 | + | |
| 157 | + public int getMinorVersion() { | |
| 158 | + return minorVersion; | |
| 159 | + } | |
| 160 | + | |
| 161 | + public String getAlgorithm() { | |
| 162 | + return "TlsMasterSecret"; | |
| 163 | + } | |
| 164 | + | |
| 165 | + public String getFormat() { | |
| 166 | + return "RAW"; | |
| 167 | + } | |
| 168 | + | |
| 169 | + public byte[] getEncoded() { | |
| 170 | + return key.clone(); | |
| 171 | + } | |
| 172 | + | |
| 173 | + } | |
| 174 | + | |
| 175 | +} | |