File DefaultDigestFactory.java
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Classes
| Class | Line # | Actions | |||||
|---|---|---|---|---|---|---|---|
| DefaultDigestFactory | 50 | 15 | 0% | 11 | 15 |
Contributing tests
This file is covered by 8 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.internal.digest.factory; | |
| 21 | ||
| 22 | import java.io.OutputStream; | |
| 23 | ||
| 24 | import javax.inject.Inject; | |
| 25 | import javax.inject.Singleton; | |
| 26 | ||
| 27 | import org.bouncycastle.asn1.ASN1ObjectIdentifier; | |
| 28 | import org.bouncycastle.asn1.x509.AlgorithmIdentifier; | |
| 29 | import org.bouncycastle.operator.DigestCalculator; | |
| 30 | import org.bouncycastle.operator.DigestCalculatorProvider; | |
| 31 | import org.bouncycastle.operator.OperatorCreationException; | |
| 32 | import org.xwiki.component.annotation.Component; | |
| 33 | import org.xwiki.component.manager.ComponentLookupException; | |
| 34 | import org.xwiki.component.manager.ComponentManager; | |
| 35 | import org.xwiki.crypto.Digest; | |
| 36 | import org.xwiki.crypto.DigestFactory; | |
| 37 | ||
| 38 | /** | |
| 39 | * Default digest factory to create digest from encoded ASN.1 identifiers. | |
| 40 | * | |
| 41 | * This factory could only create digest from previously serialized digest, that use the ASN.1 encoding standard. | |
| 42 | * It delegate the creation operation to the appropriate factory. The factory is requested to the component manager | |
| 43 | * using the algorithm OID as hint. | |
| 44 | * | |
| 45 | * @version $Id: ee77e9480d89e471bd6e7330c4133ce0f4b563d5 $ | |
| 46 | * @since 5.4M1 | |
| 47 | */ | |
| 48 | @Component | |
| 49 | @Singleton | |
| 50 | public class DefaultDigestFactory extends AbstractBcDigestFactory implements DigestCalculatorProvider | |
| 51 | { | |
| 52 | private static final RuntimeException UNSUPPORTED = | |
| 53 | new UnsupportedOperationException("Unexpected internal function call."); | |
| 54 | ||
| 55 | @Inject | |
| 56 | private ComponentManager manager; | |
| 57 | ||
| 58 | 0 |  @Override |
| 59 | public org.bouncycastle.crypto.Digest getDigestInstance() | |
| 60 | { | |
| 61 | 0 | throw UNSUPPORTED; |
| 62 | } | |
| 63 | ||
| 64 | 0 | @Override |
| 65 | public AlgorithmIdentifier getAlgorithmIdentifier() | |
| 66 | { | |
| 67 | 0 | throw UNSUPPORTED; |
| 68 | } | |
| 69 | ||
| 70 | 0 | @Override |
| 71 | public Digest getInstance() | |
| 72 | { | |
| 73 | 0 | throw new UnsupportedOperationException("Sorry, cannot get an instance without a determined algorithm."); |
| 74 | } | |
| 75 | ||
| 76 | 6 | @Override |
| 77 | public Digest getInstance(byte[] encoded) | |
| 78 | { | |
| 79 | 6 | AlgorithmIdentifier algId = AlgorithmIdentifier.getInstance(encoded); |
| 80 | ||
| 81 | 6 | return getFactory(algId.getAlgorithm()).getInstance(); |
| 82 | } | |
| 83 | ||
| 84 | 22 | private DigestFactory getFactory(ASN1ObjectIdentifier algId) |
| 85 | { | |
| 86 | 22 | try { |
| 87 | 22 | return this.manager.getInstance(DigestFactory.class, algId.getId()); |
| 88 | } catch (ComponentLookupException e) { | |
| 89 | 0 | throw new UnsupportedOperationException("Digest algorithm not found.", e); |
| 90 | } | |
| 91 | } | |
| 92 | ||
| 93 | /** | |
| 94 | * {@inheritDoc} | |
| 95 | * | |
| 96 | * @since 6.0M1 | |
| 97 | */ | |
| 98 | 16 | @Override |
| 99 | public DigestCalculator get(final AlgorithmIdentifier algorithmIdentifier) throws OperatorCreationException | |
| 100 | { | |
| 101 | 16 | final Digest digest = getFactory(algorithmIdentifier.getAlgorithm()).getInstance(); |
| 102 | ||
| 103 | 16 | if (digest instanceof DigestCalculator) { |
| 104 | 16 | return (DigestCalculator) digest; |
| 105 | } else { | |
| 106 | 0 | return new DigestCalculator() |
| 107 | { | |
| 108 | 0 | @Override |
| 109 | public AlgorithmIdentifier getAlgorithmIdentifier() | |
| 110 | { | |
| 111 | 0 | return algorithmIdentifier; |
| 112 | } | |
| 113 | ||
| 114 | 0 | @Override |
| 115 | public OutputStream getOutputStream() | |
| 116 | { | |
| 117 | 0 | return digest.getOutputStream(); |
| 118 | } | |
| 119 | ||
| 120 | 0 | @Override |
| 121 | public byte[] getDigest() | |
| 122 | { | |
| 123 | 0 | return digest.digest(); |
| 124 | } | |
| 125 | }; | |
| 126 | } | |
| 127 | } | |
| 128 | } |