| /* |
| * Copyright (c) 2005, 2010, 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.internal.spec; |
| |
| import java.security.spec.AlgorithmParameterSpec; |
| |
| import javax.crypto.SecretKey; |
| |
| /** |
| * Parameters for the TLS PRF (pseudo-random function). The PRF function |
| * is defined in RFC 2246. |
| * This class is used to initialize KeyGenerators of the type "TlsPrf". |
| * |
| * <p>Instances of this class are immutable. |
| * |
| * @since 1.6 |
| * @author Andreas Sterbenz |
| * @deprecated Sun JDK internal use only --- WILL BE REMOVED in a future |
| * release. |
| */ |
| @Deprecated |
| public class TlsPrfParameterSpec implements AlgorithmParameterSpec { |
| |
| private final SecretKey secret; |
| private final String label; |
| private final byte[] seed; |
| private final int outputLength; |
| private final String prfHashAlg; |
| private final int prfHashLength; |
| private final int prfBlockSize; |
| |
| /** |
| * Constructs a new TlsPrfParameterSpec. |
| * |
| * @param secret the secret to use in the calculation (or null) |
| * @param label the label to use in the calculation |
| * @param seed the random seed to use in the calculation |
| * @param outputLength the length in bytes of the output key to be produced |
| * @param prfHashAlg the name of the TLS PRF hash algorithm to use. |
| * Used only for TLS 1.2+. TLS1.1 and earlier use a fixed PRF. |
| * @param prfHashLength the output length of the TLS PRF hash algorithm. |
| * Used only for TLS 1.2+. |
| * @param prfBlockSize the input block size of the TLS PRF hash algorithm. |
| * Used only for TLS 1.2+. |
| * |
| * @throws NullPointerException if label or seed is null |
| * @throws IllegalArgumentException if outputLength is negative |
| */ |
| public TlsPrfParameterSpec(SecretKey secret, String label, |
| byte[] seed, int outputLength, |
| String prfHashAlg, int prfHashLength, int prfBlockSize) { |
| if ((label == null) || (seed == null)) { |
| throw new NullPointerException("label and seed must not be null"); |
| } |
| if (outputLength <= 0) { |
| throw new IllegalArgumentException("outputLength must be positive"); |
| } |
| this.secret = secret; |
| this.label = label; |
| this.seed = seed.clone(); |
| this.outputLength = outputLength; |
| this.prfHashAlg = prfHashAlg; |
| this.prfHashLength = prfHashLength; |
| this.prfBlockSize = prfBlockSize; |
| } |
| |
| /** |
| * Returns the secret to use in the PRF calculation, or null if there is no |
| * secret. |
| * |
| * @return the secret to use in the PRF calculation, or null if there is no |
| * secret. |
| */ |
| public SecretKey getSecret() { |
| return secret; |
| } |
| |
| /** |
| * Returns the label to use in the PRF calcuation. |
| * |
| * @return the label to use in the PRF calcuation. |
| */ |
| public String getLabel() { |
| return label; |
| } |
| |
| /** |
| * Returns a copy of the seed to use in the PRF calcuation. |
| * |
| * @return a copy of the seed to use in the PRF calcuation. |
| */ |
| public byte[] getSeed() { |
| return seed.clone(); |
| } |
| |
| /** |
| * Returns the length in bytes of the output key to be produced. |
| * |
| * @return the length in bytes of the output key to be produced. |
| */ |
| public int getOutputLength() { |
| return outputLength; |
| } |
| |
| /** |
| * Obtains the PRF hash algorithm to use in the PRF calculation. |
| * |
| * @return the hash algorithm, or null if no algorithm was specified. |
| */ |
| public String getPRFHashAlg() { |
| return prfHashAlg; |
| } |
| |
| /** |
| * Obtains the length of PRF hash algorithm. |
| * |
| * It would have been preferred to use MessageDigest.getDigestLength(), |
| * but the API does not require implementations to support the method. |
| * |
| * @return the hash algorithm length. |
| */ |
| public int getPRFHashLength() { |
| return prfHashLength; |
| } |
| |
| /** |
| * Obtains the length of PRF hash algorithm. |
| * |
| * @return the hash algorithm length. |
| */ |
| public int getPRFBlockSize() { |
| return prfBlockSize; |
| } |
| } |