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/*
* Copyright (c) 2005, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.security.pkcs11;
import java.security.*;
import java.security.spec.AlgorithmParameterSpec;
import javax.crypto.*;
import javax.crypto.spec.*;
import sun.security.internal.spec.TlsMasterSecretParameterSpec;
import static sun.security.pkcs11.TemplateManager.*;
import sun.security.pkcs11.wrapper.*;
import static sun.security.pkcs11.wrapper.PKCS11Constants.*;
/**
* KeyGenerator for the SSL/TLS master secret.
*
* @author Andreas Sterbenz
* @since 1.6
*/
public final class P11TlsMasterSecretGenerator extends KeyGeneratorSpi {
private final static String MSG = "TlsMasterSecretGenerator must be "
+ "initialized using a TlsMasterSecretParameterSpec";
// token instance
private final Token token;
// algorithm name
private final String algorithm;
// mechanism id
private long mechanism;
private TlsMasterSecretParameterSpec spec;
private P11Key p11Key;
int version;
P11TlsMasterSecretGenerator(Token token, String algorithm, long mechanism)
throws PKCS11Exception {
super();
this.token = token;
this.algorithm = algorithm;
this.mechanism = mechanism;
}
protected void engineInit(SecureRandom random) {
throw new InvalidParameterException(MSG);
}
protected void engineInit(AlgorithmParameterSpec params,
SecureRandom random) throws InvalidAlgorithmParameterException {
if (params instanceof TlsMasterSecretParameterSpec == false) {
throw new InvalidAlgorithmParameterException(MSG);
}
this.spec = (TlsMasterSecretParameterSpec)params;
SecretKey key = spec.getPremasterSecret();
// algorithm should be either TlsRsaPremasterSecret or TlsPremasterSecret,
// but we omit the check
try {
p11Key = P11SecretKeyFactory.convertKey(token, key, null);
} catch (InvalidKeyException e) {
throw new InvalidAlgorithmParameterException("init() failed", e);
}
version = (spec.getMajorVersion() << 8) | spec.getMinorVersion();
if ((version < 0x0300) && (version > 0x0303)) {
throw new InvalidAlgorithmParameterException("Only SSL 3.0," +
" TLS 1.0, TLS 1.1, and TLS 1.2 are supported");
}
// We assume the token supports the required mechanism. If it does not,
// generateKey() will fail and the failover should take care of us.
}
protected void engineInit(int keysize, SecureRandom random) {
throw new InvalidParameterException(MSG);
}
protected SecretKey engineGenerateKey() {
if (spec == null) {
throw new IllegalStateException
("TlsMasterSecretGenerator must be initialized");
}
final boolean isTlsRsaPremasterSecret =
p11Key.getAlgorithm().equals("TlsRsaPremasterSecret");
if (version == 0x0300) {
mechanism = isTlsRsaPremasterSecret ?
CKM_SSL3_MASTER_KEY_DERIVE : CKM_SSL3_MASTER_KEY_DERIVE_DH;
} else if (version == 0x0301 || version == 0x0302) {
mechanism = isTlsRsaPremasterSecret ?
CKM_TLS_MASTER_KEY_DERIVE : CKM_TLS_MASTER_KEY_DERIVE_DH;
} else if (version == 0x0303) {
mechanism = isTlsRsaPremasterSecret ?
CKM_TLS12_MASTER_KEY_DERIVE : CKM_TLS12_MASTER_KEY_DERIVE_DH;
}
CK_VERSION ckVersion;
if (isTlsRsaPremasterSecret) {
ckVersion = new CK_VERSION(0, 0);
} else {
// Note: we use DH for all non-RSA premaster secrets. That includes
// Kerberos. That should not be a problem because master secret
// calculation is always a straightforward application of the
// TLS PRF (or the SSL equivalent).
// The only thing special about RSA master secret calculation is
// that it extracts the version numbers from the premaster secret.
ckVersion = null;
}
byte[] clientRandom = spec.getClientRandom();
byte[] serverRandom = spec.getServerRandom();
CK_SSL3_RANDOM_DATA random =
new CK_SSL3_RANDOM_DATA(clientRandom, serverRandom);
CK_MECHANISM ckMechanism = null;
if (version < 0x0303) {
CK_SSL3_MASTER_KEY_DERIVE_PARAMS params =
new CK_SSL3_MASTER_KEY_DERIVE_PARAMS(random, ckVersion);
ckMechanism = new CK_MECHANISM(mechanism, params);
} else if (version == 0x0303) {
CK_TLS12_MASTER_KEY_DERIVE_PARAMS params =
new CK_TLS12_MASTER_KEY_DERIVE_PARAMS(random, ckVersion,
Functions.getHashMechId(spec.getPRFHashAlg()));
ckMechanism = new CK_MECHANISM(mechanism, params);
}
Session session = null;
try {
session = token.getObjSession();
CK_ATTRIBUTE[] attributes = token.getAttributes(O_GENERATE,
CKO_SECRET_KEY, CKK_GENERIC_SECRET, new CK_ATTRIBUTE[0]);
long keyID = token.p11.C_DeriveKey(session.id(),
ckMechanism, p11Key.keyID, attributes);
int major, minor;
if (ckVersion == null) {
major = -1;
minor = -1;
} else {
major = ckVersion.major;
minor = ckVersion.minor;
}
SecretKey key = P11Key.masterSecretKey(session, keyID,
"TlsMasterSecret", 48 << 3, attributes, major, minor);
return key;
} catch (Exception e) {
throw new ProviderException("Could not generate key", e);
} finally {
token.releaseSession(session);
}
}
}
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