File AbstractBcPBKDF2.java
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| AbstractBcPBKDF2 | 38 | 14 | 0% | 7 | 0 |
Contributing tests
This file is covered by 25 tests.
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| 1 | /* | |
| 2 | * See the NOTICE file distributed with this work for additional | |
| 3 | * information regarding copyright ownership. | |
| 4 | * | |
| 5 | * This is free software; you can redistribute it and/or modify it | |
| 6 | * under the terms of the GNU Lesser General Public License as | |
| 7 | * published by the Free Software Foundation; either version 2.1 of | |
| 8 | * the License, or (at your option) any later version. | |
| 9 | * | |
| 10 | * This software is distributed in the hope that it will be useful, | |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | * Lesser General Public License for more details. | |
| 14 | * | |
| 15 | * You should have received a copy of the GNU Lesser General Public | |
| 16 | * License along with this software; if not, write to the Free | |
| 17 | * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
| 18 | * 02110-1301 USA, or see the FSF site: http://www.fsf.org. | |
| 19 | */ | |
| 20 | package org.xwiki.crypto.password.internal.kdf; | |
| 21 | ||
| 22 | import java.io.IOException; | |
| 23 | ||
| 24 | import org.bouncycastle.asn1.x509.AlgorithmIdentifier; | |
| 25 | import org.bouncycastle.crypto.PBEParametersGenerator; | |
| 26 | import org.bouncycastle.crypto.params.KeyParameter; | |
| 27 | import org.bouncycastle.crypto.params.ParametersWithIV; | |
| 28 | import org.xwiki.crypto.params.cipher.symmetric.KeyWithIVParameters; | |
| 29 | import org.xwiki.crypto.password.params.KeyDerivationFunctionParameters; | |
| 30 | import org.xwiki.crypto.password.params.PBKDF2Parameters; | |
| 31 | ||
| 32 | /** | |
| 33 | * Abstract base class implement key derivation function that encapsulate Bouncy Castle PBE generator. | |
| 34 | * | |
| 35 | * @version $Id: 3d70419b2db9be7c81e8b29b28b16d1d5a65f78e $ | |
| 36 | * @since 5.4M1 | |
| 37 | */ | |
| 38 | public abstract class AbstractBcPBKDF2 extends AbstractBcKDF | |
| 39 | { | |
| 40 | private final PBEParametersGenerator generator; | |
| 41 | ||
| 42 | private final PBKDF2Parameters parameters; | |
| 43 | ||
| 44 | private final AlgorithmIdentifier algId; | |
| 45 | ||
| 46 | /** | |
| 47 | * Construct a new derivation function based on the given generator. | |
| 48 | * | |
| 49 | * @param generator the Bouncy Castle generator to use. | |
| 50 | * @param parameters the parameter for initializing the generator. | |
| 51 | * @param algId the algorithm identifier of the pseudo random function used for this key derivation function. | |
| 52 | */ | |
| 53 | 45 |  public AbstractBcPBKDF2(PBEParametersGenerator generator, PBKDF2Parameters parameters, AlgorithmIdentifier algId) |
| 54 | { | |
| 55 | 45 | this.generator = generator; |
| 56 | 45 | this.parameters = parameters; |
| 57 | 45 | this.algId = algId; |
| 58 | } | |
| 59 | ||
| 60 | 82 | @Override |
| 61 | public KeyDerivationFunctionParameters getParameters() | |
| 62 | { | |
| 63 | 82 | return this.parameters; |
| 64 | } | |
| 65 | ||
| 66 | /** | |
| 67 | * @return the algorithm identifier of the pseudo random function used for this key derivation function. | |
| 68 | */ | |
| 69 | 24 | public AlgorithmIdentifier getPRFAlgorithmIdentifier() |
| 70 | { | |
| 71 | 24 | if (this.parameters.getPseudoRandomFuntionHint() != null) { |
| 72 | 12 | return this.algId; |
| 73 | } | |
| 74 | 12 | return null; |
| 75 | } | |
| 76 | ||
| 77 | 34 | @Override |
| 78 | public org.xwiki.crypto.params.cipher.symmetric.KeyParameter derive(byte[] password) | |
| 79 | { | |
| 80 | 34 | this.generator.init(password, this.parameters.getSalt(), this.parameters.getIterationCount()); |
| 81 | 34 | KeyParameter keyParam = (KeyParameter) this.generator.generateDerivedParameters(getKeySize() * 8); |
| 82 | 34 | return new org.xwiki.crypto.params.cipher.symmetric.KeyParameter(keyParam.getKey()); |
| 83 | } | |
| 84 | ||
| 85 | 11 | @Override |
| 86 | public KeyWithIVParameters derive(byte[] password, int ivSize) | |
| 87 | { | |
| 88 | 11 | this.generator.init(password, this.parameters.getSalt(), this.parameters.getIterationCount()); |
| 89 | 11 | ParametersWithIV keyParam = |
| 90 | (ParametersWithIV) this.generator.generateDerivedParameters(getKeySize() * 8, ivSize * 8); | |
| 91 | 11 | return new KeyWithIVParameters(((KeyParameter) keyParam.getParameters()).getKey(), keyParam.getIV()); |
| 92 | } | |
| 93 | ||
| 94 | 2 | @Override |
| 95 | public byte[] getEncoded() throws IOException | |
| 96 | { | |
| 97 | 2 | return getKeyDerivationFunction().getEncoded(); |
| 98 | } | |
| 99 | } |