File BcPBES2CipherFactory.java
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Classes
| Class | Line # | Actions | |||||
|---|---|---|---|---|---|---|---|
| BcPBES2CipherFactory | 48 | 25 | 0% | 13 | 17 |
Contributing tests
This file is covered by 13 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.pbe.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.EncryptionScheme; | |
| 28 | import org.bouncycastle.asn1.pkcs.KeyDerivationFunc; | |
| 29 | import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers; | |
| 30 | import org.bouncycastle.asn1.x509.AlgorithmIdentifier; | |
| 31 | import org.xwiki.component.annotation.Component; | |
| 32 | import org.xwiki.component.manager.ComponentLookupException; | |
| 33 | import org.xwiki.component.manager.ComponentManager; | |
| 34 | import org.xwiki.crypto.cipher.CipherFactory; | |
| 35 | import org.xwiki.crypto.password.PasswordBasedCipher; | |
| 36 | import org.xwiki.crypto.password.PasswordBasedCipherFactory; | |
| 37 | import org.xwiki.crypto.password.internal.kdf.PBES2Parameters; | |
| 38 | import org.xwiki.crypto.password.internal.pbe.RC5CBCParameter; | |
| 39 | ||
| 40 | /** | |
| 41 | * Implement the parsing of PBES2 encryption scheme. | |
| 42 | * | |
| 43 | * @version $Id: bb875fb78b703ab9c20baa226a0f7b56c55cdd8c $ | |
| 44 | * @since 5.4M1 | |
| 45 | */ | |
| 46 | @Component(hints = { "PBES2", "1.2.840.113549.1.5.13" }) | |
| 47 | @Singleton | |
| 48 | public class BcPBES2CipherFactory extends AbstractBcPBES2CipherFactory | |
| 49 | { | |
| 50 | private static final RuntimeException UNSUPPORTED = | |
| 51 | new UnsupportedOperationException("Unexpected internal function call."); | |
| 52 | ||
| 53 | @Inject | |
| 54 | private ComponentManager manager; | |
| 55 | ||
| 56 | 0 |  @Override |
| 57 | protected CipherFactory getCipherFactory() | |
| 58 | { | |
| 59 | 0 | throw UNSUPPORTED; |
| 60 | } | |
| 61 | ||
| 62 | 6 | @Override |
| 63 | public PasswordBasedCipher getInstance(boolean forEncryption, byte[] password, byte[] encoded) | |
| 64 | { | |
| 65 | 6 | ASN1Sequence seq = ASN1Sequence.getInstance(encoded); |
| 66 | 6 | AlgorithmIdentifier alg = getPBES2AlgorithmIdentifier(seq); |
| 67 | ||
| 68 | 6 | PBES2Parameters params = PBES2Parameters.getInstance(alg.getParameters()); |
| 69 | 6 | PasswordBasedCipherFactory pbecf = getPBES2CipherFactory(params.getEncryptionScheme()); |
| 70 | 6 | PasswordBasedCipher cipher = getBcPBES2PasswordBasedCipher(pbecf, forEncryption, password, seq); |
| 71 | ||
| 72 | 6 | if (cipher != null) { |
| 73 | 6 | return cipher; |
| 74 | } | |
| 75 | 0 | return pbecf.getInstance(forEncryption, password, encoded); |
| 76 | } | |
| 77 | ||
| 78 | 7 | @Override |
| 79 | public PasswordBasedCipher getInstance(boolean forEncryption, byte[] password, ASN1Encodable parameters) | |
| 80 | { | |
| 81 | 7 | return getBcPBES2PasswordBasedCipher( |
| 82 | getPBES2CipherFactory( | |
| 83 | PBES2Parameters.getInstance( | |
| 84 | getPBES2AlgorithmIdentifier(parameters).getParameters()).getEncryptionScheme()), | |
| 85 | forEncryption, password, parameters); | |
| 86 | } | |
| 87 | ||
| 88 | 13 | private AlgorithmIdentifier getPBES2AlgorithmIdentifier(ASN1Encodable parameters) |
| 89 | { | |
| 90 | 13 | AlgorithmIdentifier alg = AlgorithmIdentifier.getInstance(parameters); |
| 91 | ||
| 92 | 13 | if (!alg.getAlgorithm().equals(PKCSObjectIdentifiers.id_PBES2)) { |
| 93 | 0 | throw new IllegalArgumentException("Illegal algorithm identifier for PBES2: " + alg.getAlgorithm().getId()); |
| 94 | } | |
| 95 | 13 | return alg; |
| 96 | } | |
| 97 | ||
| 98 | 13 | private PasswordBasedCipher getBcPBES2PasswordBasedCipher(PasswordBasedCipherFactory pbecf, boolean forEncryption, |
| 99 | byte[] password, ASN1Encodable parameters) | |
| 100 | { | |
| 101 | 13 | if (pbecf instanceof AbstractBcPBES2CipherFactory) { |
| 102 | 13 | return ((AbstractBcPBES2CipherFactory) pbecf).getInstance(forEncryption, password, parameters); |
| 103 | } | |
| 104 | 0 | return null; |
| 105 | } | |
| 106 | ||
| 107 | 0 | @Override |
| 108 | protected PasswordBasedCipher getInstance(boolean forEncryption, byte[] password, KeyDerivationFunc kdfParams, | |
| 109 | EncryptionScheme scheme) | |
| 110 | { | |
| 111 | // Avoid spurious issues, this one should never be called anymore since the above one is overwritten. | |
| 112 | 0 | throw UNSUPPORTED; |
| 113 | } | |
| 114 | ||
| 115 | 13 | private PasswordBasedCipherFactory getPBES2CipherFactory(EncryptionScheme scheme) |
| 116 | { | |
| 117 | 13 | try { |
| 118 | 13 | if (scheme.getAlgorithm().equals(PKCSObjectIdentifiers.encryptionAlgorithm.branch("9"))) { |
| 119 | 0 | RC5CBCParameter rc5Param = RC5CBCParameter.getInstance(scheme.getParameters()); |
| 120 | 0 | if (rc5Param.getBlockSizeInBits().intValue() > 64) { |
| 121 | // RC5-CBC-Pad with a 128bits block size | |
| 122 | 0 | return this.manager.getInstance(PasswordBasedCipherFactory.class, "PBES2-RC5-64-CBC-Pad"); |
| 123 | } | |
| 124 | } | |
| 125 | 13 | return this.manager.getInstance(PasswordBasedCipherFactory.class, scheme.getAlgorithm().getId()); |
| 126 | } catch (ComponentLookupException e) { | |
| 127 | 0 | throw new UnsupportedOperationException("Password based cipher factory not found.", e); |
| 128 | } | |
| 129 | } | |
| 130 | } |