92 lines
3.2 KiB
Java
92 lines
3.2 KiB
Java
/*
|
|
* Copyright (c) 2005, 2014, 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 com.sun.crypto.provider;
|
|
|
|
import java.security.*;
|
|
import java.security.spec.AlgorithmParameterSpec;
|
|
|
|
import javax.crypto.*;
|
|
import javax.crypto.spec.SecretKeySpec;
|
|
|
|
import sun.security.internal.spec.TlsRsaPremasterSecretParameterSpec;
|
|
|
|
/**
|
|
* KeyGenerator implementation for the SSL/TLS RSA premaster secret.
|
|
*
|
|
* @author Andreas Sterbenz
|
|
* @since 1.6
|
|
*/
|
|
public final class TlsRsaPremasterSecretGenerator extends KeyGeneratorSpi {
|
|
|
|
private final static String MSG = "TlsRsaPremasterSecretGenerator must be "
|
|
+ "initialized using a TlsRsaPremasterSecretParameterSpec";
|
|
|
|
private TlsRsaPremasterSecretParameterSpec spec;
|
|
private SecureRandom random;
|
|
|
|
public TlsRsaPremasterSecretGenerator() {
|
|
}
|
|
|
|
protected void engineInit(SecureRandom random) {
|
|
throw new InvalidParameterException(MSG);
|
|
}
|
|
|
|
protected void engineInit(AlgorithmParameterSpec params,
|
|
SecureRandom random) throws InvalidAlgorithmParameterException {
|
|
if (!(params instanceof TlsRsaPremasterSecretParameterSpec)) {
|
|
throw new InvalidAlgorithmParameterException(MSG);
|
|
}
|
|
this.spec = (TlsRsaPremasterSecretParameterSpec)params;
|
|
this.random = random;
|
|
}
|
|
|
|
protected void engineInit(int keysize, SecureRandom random) {
|
|
throw new InvalidParameterException(MSG);
|
|
}
|
|
|
|
// Only can be used in client side to generate TLS RSA premaster secret.
|
|
protected SecretKey engineGenerateKey() {
|
|
if (spec == null) {
|
|
throw new IllegalStateException(
|
|
"TlsRsaPremasterSecretGenerator must be initialized");
|
|
}
|
|
|
|
byte[] b = spec.getEncodedSecret();
|
|
if (b == null) {
|
|
if (random == null) {
|
|
random = new SecureRandom();
|
|
}
|
|
b = new byte[48];
|
|
random.nextBytes(b);
|
|
}
|
|
b[0] = (byte)spec.getMajorVersion();
|
|
b[1] = (byte)spec.getMinorVersion();
|
|
|
|
return new SecretKeySpec(b, "TlsRsaPremasterSecret");
|
|
}
|
|
|
|
}
|