File BcScryptKeyDerivationFunctionFactory.java
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Classes
| Class | Line # | Actions | |||||
|---|---|---|---|---|---|---|---|
| BcScryptKeyDerivationFunctionFactory | 45 | 8 | 0% | 5 | 5 |
Contributing tests
This file is covered by 6 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.factory; | |
| 21 | ||
| 22 | import javax.inject.Singleton; | |
| 23 | ||
| 24 | import org.bouncycastle.asn1.ASN1Encodable; | |
| 25 | import org.bouncycastle.asn1.ASN1ObjectIdentifier; | |
| 26 | import org.bouncycastle.asn1.pkcs.KeyDerivationFunc; | |
| 27 | import org.xwiki.component.annotation.Component; | |
| 28 | import org.xwiki.crypto.password.KeyDerivationFunction; | |
| 29 | import org.xwiki.crypto.password.internal.kdf.BcScryptKDF; | |
| 30 | import org.xwiki.crypto.password.internal.kdf.ScryptKDFParams; | |
| 31 | import org.xwiki.crypto.password.params.KeyDerivationFunctionParameters; | |
| 32 | import org.xwiki.crypto.password.params.ScryptParameters; | |
| 33 | ||
| 34 | /** | |
| 35 | * Implementation of the key derivation function for Scrypt using Bouncy Castle. | |
| 36 | * | |
| 37 | * Functions provided by this factory are conform with http://www.tarsnap.com/scrypt/scrypt.pdf | |
| 38 | * and the IETF expired draft draft-josefsson-scrypt-kdf-01. | |
| 39 | * | |
| 40 | * @version $Id: 091a8b3c7e5126df5fd507a8fe2699d1a6d33298 $ | |
| 41 | * @since 5.4M1 | |
| 42 | */ | |
| 43 | @Component(hints = { "Scrypt", "1.3.6.1.4.1.11591.4.11" }) | |
| 44 | @Singleton | |
| 45 | public class BcScryptKeyDerivationFunctionFactory extends AbstractBcKDFFactory | |
| 46 | { | |
| 47 | /** This OID, part of the GNU space, is not really reserved but suggested byt the IETF expired draft. */ | |
| 48 | private static final ASN1ObjectIdentifier ALG_ID = new ASN1ObjectIdentifier("1.3.6.1.4.1.11591.4.11"); | |
| 49 | ||
| 50 | 9 |  @Override |
| 51 | public KeyDerivationFunction getInstance(KeyDerivationFunctionParameters params) | |
| 52 | { | |
| 53 | 9 | if (!(params instanceof ScryptParameters)) { |
| 54 | 0 | throw new IllegalArgumentException("Invalid parameter used for Scrypt function: " |
| 55 | + params.getClass().getName()); | |
| 56 | } | |
| 57 | ||
| 58 | 9 | return new BcScryptKDF((ScryptParameters) params); |
| 59 | } | |
| 60 | ||
| 61 | 3 | @Override |
| 62 | public KeyDerivationFunction getInstance(ASN1Encodable parameters) | |
| 63 | { | |
| 64 | 3 | KeyDerivationFunc kdf = KeyDerivationFunc.getInstance(parameters); |
| 65 | ||
| 66 | 3 | if (!kdf.getAlgorithm().equals(ALG_ID)) { |
| 67 | 0 | throw new IllegalArgumentException("Illegal algorithm identifier for Scrypt: " |
| 68 | + kdf.getAlgorithm().getId()); | |
| 69 | } | |
| 70 | ||
| 71 | 3 | ScryptKDFParams params = ScryptKDFParams.getInstance(kdf.getParameters()); |
| 72 | ||
| 73 | 3 | return getInstance( |
| 74 | 3 | new ScryptParameters((params.getKeyLength() != null) ? params.getKeyLength().intValue() : -1, |
| 75 | params.getCostParameter().intValue(), params.getParallelizationParameter().intValue(), | |
| 76 | params.getBlockSize().intValue(), params.getSalt())); | |
| 77 | } | |
| 78 | } |