File DefaultKeyDerivationFunctionFactory.java
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Classes
| Class | Line # | Actions | |||||
|---|---|---|---|---|---|---|---|
| DefaultKeyDerivationFunctionFactory | 47 | 15 | 0% | 8 | 5 |
Contributing tests
This file is covered by 15 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.Inject; | |
| 23 | import javax.inject.Singleton; | |
| 24 | ||
| 25 | import org.bouncycastle.asn1.ASN1Encodable; | |
| 26 | import org.bouncycastle.asn1.ASN1Sequence; | |
| 27 | import org.bouncycastle.asn1.pkcs.KeyDerivationFunc; | |
| 28 | import org.xwiki.component.annotation.Component; | |
| 29 | import org.xwiki.component.manager.ComponentLookupException; | |
| 30 | import org.xwiki.component.manager.ComponentManager; | |
| 31 | import org.xwiki.crypto.password.KeyDerivationFunction; | |
| 32 | import org.xwiki.crypto.password.KeyDerivationFunctionFactory; | |
| 33 | import org.xwiki.crypto.password.params.KeyDerivationFunctionParameters; | |
| 34 | ||
| 35 | /** | |
| 36 | * Default key derivation factory to create derivation function from encoded ASN.1 identifiers and parameters. | |
| 37 | * | |
| 38 | * This factory could only create key derivation function from previously serialized function, that use the ASN.1 | |
| 39 | * encoding standard. It delegate the creation operation to the appropriate factory. The factory is requested | |
| 40 | * to the component manager using the algorithm OID as hint. | |
| 41 | * | |
| 42 | * @version $Id: 424b9af2d3b64010def60390345eee0c5396ba2b $ | |
| 43 | * @since 5.4M1 | |
| 44 | */ | |
| 45 | @Component | |
| 46 | @Singleton | |
| 47 | public class DefaultKeyDerivationFunctionFactory extends AbstractBcKDFFactory | |
| 48 | { | |
| 49 | @Inject | |
| 50 | private ComponentManager manager; | |
| 51 | ||
| 52 | 15 |  @Override |
| 53 | public KeyDerivationFunction getInstance(KeyDerivationFunctionParameters params) | |
| 54 | { | |
| 55 | 15 | return getFactory(params.getAlgorithmName()).getInstance(params); |
| 56 | } | |
| 57 | ||
| 58 | 2 | @Override |
| 59 | public KeyDerivationFunction getInstance(byte[] encoded) | |
| 60 | { | |
| 61 | 2 | KeyDerivationFunc func = KeyDerivationFunc.getInstance(ASN1Sequence.getInstance(encoded)); |
| 62 | 2 | KeyDerivationFunctionFactory factory = getFactory(func.getAlgorithm().getId()); |
| 63 | 2 | KeyDerivationFunction kdf = getBcInstance(factory, func); |
| 64 | 2 | if (kdf == null) { |
| 65 | 0 | kdf = factory.getInstance(encoded); |
| 66 | } | |
| 67 | 2 | return kdf; |
| 68 | } | |
| 69 | ||
| 70 | 13 | @Override |
| 71 | public KeyDerivationFunction getInstance(ASN1Encodable parameters) | |
| 72 | { | |
| 73 | 13 | KeyDerivationFunc func = KeyDerivationFunc.getInstance(parameters); |
| 74 | 13 | return getBcInstance(getFactory(func.getAlgorithm().getId()), func); |
| 75 | } | |
| 76 | ||
| 77 | 15 | private KeyDerivationFunction getBcInstance(KeyDerivationFunctionFactory factory, KeyDerivationFunc func) |
| 78 | { | |
| 79 | 15 | if (factory instanceof AbstractBcKDFFactory) { |
| 80 | 15 | return ((AbstractBcKDFFactory) factory).getInstance(func); |
| 81 | } | |
| 82 | 0 | return null; |
| 83 | } | |
| 84 | ||
| 85 | 30 | private KeyDerivationFunctionFactory getFactory(String hint) |
| 86 | { | |
| 87 | 30 | try { |
| 88 | 30 | return this.manager.getInstance(KeyDerivationFunctionFactory.class, hint); |
| 89 | } catch (ComponentLookupException e) { | |
| 90 | 0 | throw new UnsupportedOperationException("Key derivation function algorithm not found.", e); |
| 91 | } | |
| 92 | } | |
| 93 | } |