J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2005-2007 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.security.pkcs11; |
| 27 | |
| 28 | import java.security.*; |
| 29 | import java.security.spec.AlgorithmParameterSpec; |
| 30 | |
| 31 | import javax.crypto.*; |
| 32 | import javax.crypto.spec.*; |
| 33 | |
| 34 | import sun.security.internal.spec.TlsMasterSecretParameterSpec; |
| 35 | |
| 36 | import static sun.security.pkcs11.TemplateManager.*; |
| 37 | import sun.security.pkcs11.wrapper.*; |
| 38 | import static sun.security.pkcs11.wrapper.PKCS11Constants.*; |
| 39 | |
| 40 | /** |
| 41 | * KeyGenerator for the SSL/TLS master secret. |
| 42 | * |
| 43 | * @author Andreas Sterbenz |
| 44 | * @since 1.6 |
| 45 | */ |
| 46 | public final class P11TlsMasterSecretGenerator extends KeyGeneratorSpi { |
| 47 | |
| 48 | private final static String MSG = "TlsMasterSecretGenerator must be " |
| 49 | + "initialized using a TlsMasterSecretParameterSpec"; |
| 50 | |
| 51 | // token instance |
| 52 | private final Token token; |
| 53 | |
| 54 | // algorithm name |
| 55 | private final String algorithm; |
| 56 | |
| 57 | // mechanism id |
| 58 | private long mechanism; |
| 59 | |
| 60 | private TlsMasterSecretParameterSpec spec; |
| 61 | private P11Key p11Key; |
| 62 | |
| 63 | int version; |
| 64 | |
| 65 | P11TlsMasterSecretGenerator(Token token, String algorithm, long mechanism) |
| 66 | throws PKCS11Exception { |
| 67 | super(); |
| 68 | this.token = token; |
| 69 | this.algorithm = algorithm; |
| 70 | this.mechanism = mechanism; |
| 71 | } |
| 72 | |
| 73 | protected void engineInit(SecureRandom random) { |
| 74 | throw new InvalidParameterException(MSG); |
| 75 | } |
| 76 | |
| 77 | protected void engineInit(AlgorithmParameterSpec params, |
| 78 | SecureRandom random) throws InvalidAlgorithmParameterException { |
| 79 | if (params instanceof TlsMasterSecretParameterSpec == false) { |
| 80 | throw new InvalidAlgorithmParameterException(MSG); |
| 81 | } |
| 82 | this.spec = (TlsMasterSecretParameterSpec)params; |
| 83 | SecretKey key = spec.getPremasterSecret(); |
| 84 | // algorithm should be either TlsRsaPremasterSecret or TlsPremasterSecret, |
| 85 | // but we omit the check |
| 86 | try { |
| 87 | p11Key = P11SecretKeyFactory.convertKey(token, key, null); |
| 88 | } catch (InvalidKeyException e) { |
| 89 | throw new InvalidAlgorithmParameterException("init() failed", e); |
| 90 | } |
| 91 | version = (spec.getMajorVersion() << 8) | spec.getMinorVersion(); |
| 92 | if ((version < 0x0300) || (version > 0x0302)) { |
| 93 | throw new InvalidAlgorithmParameterException |
| 94 | ("Only SSL 3.0, TLS 1.0, and TLS 1.1 supported"); |
| 95 | } |
| 96 | // We assume the token supports the required mechanism. If it does not, |
| 97 | // generateKey() will fail and the failover should take care of us. |
| 98 | } |
| 99 | |
| 100 | protected void engineInit(int keysize, SecureRandom random) { |
| 101 | throw new InvalidParameterException(MSG); |
| 102 | } |
| 103 | |
| 104 | protected SecretKey engineGenerateKey() { |
| 105 | if (spec == null) { |
| 106 | throw new IllegalStateException |
| 107 | ("TlsMasterSecretGenerator must be initialized"); |
| 108 | } |
| 109 | CK_VERSION ckVersion; |
| 110 | if (p11Key.getAlgorithm().equals("TlsRsaPremasterSecret")) { |
| 111 | mechanism = (version == 0x0300) ? CKM_SSL3_MASTER_KEY_DERIVE |
| 112 | : CKM_TLS_MASTER_KEY_DERIVE; |
| 113 | ckVersion = new CK_VERSION(0, 0); |
| 114 | } else { |
| 115 | // Note: we use DH for all non-RSA premaster secrets. That includes |
| 116 | // Kerberos. That should not be a problem because master secret |
| 117 | // calculation is always a straightforward application of the |
| 118 | // TLS PRF (or the SSL equivalent). |
| 119 | // The only thing special about RSA master secret calculation is |
| 120 | // that it extracts the version numbers from the premaster secret. |
| 121 | mechanism = (version == 0x0300) ? CKM_SSL3_MASTER_KEY_DERIVE_DH |
| 122 | : CKM_TLS_MASTER_KEY_DERIVE_DH; |
| 123 | ckVersion = null; |
| 124 | } |
| 125 | byte[] clientRandom = spec.getClientRandom(); |
| 126 | byte[] serverRandom = spec.getServerRandom(); |
| 127 | CK_SSL3_RANDOM_DATA random = |
| 128 | new CK_SSL3_RANDOM_DATA(clientRandom, serverRandom); |
| 129 | CK_SSL3_MASTER_KEY_DERIVE_PARAMS params = |
| 130 | new CK_SSL3_MASTER_KEY_DERIVE_PARAMS(random, ckVersion); |
| 131 | |
| 132 | Session session = null; |
| 133 | try { |
| 134 | session = token.getObjSession(); |
| 135 | CK_ATTRIBUTE[] attributes = token.getAttributes(O_GENERATE, |
| 136 | CKO_SECRET_KEY, CKK_GENERIC_SECRET, new CK_ATTRIBUTE[0]); |
| 137 | long keyID = token.p11.C_DeriveKey(session.id(), |
| 138 | new CK_MECHANISM(mechanism, params), p11Key.keyID, attributes); |
| 139 | int major, minor; |
| 140 | ckVersion = params.pVersion; |
| 141 | if (ckVersion == null) { |
| 142 | major = -1; |
| 143 | minor = -1; |
| 144 | } else { |
| 145 | major = ckVersion.major; |
| 146 | minor = ckVersion.minor; |
| 147 | } |
| 148 | SecretKey key = P11Key.masterSecretKey(session, keyID, |
| 149 | "TlsMasterSecret", 48 << 3, attributes, major, minor); |
| 150 | return key; |
| 151 | } catch (Exception e) { |
| 152 | throw new ProviderException("Could not generate key", e); |
| 153 | } finally { |
| 154 | token.releaseSession(session); |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | } |