1adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project/* 2adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Licensed to the Apache Software Foundation (ASF) under one or more 3adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * contributor license agreements. See the NOTICE file distributed with 4adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * this work for additional information regarding copyright ownership. 5adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * The ASF licenses this file to You under the Apache License, Version 2.0 6adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * (the "License"); you may not use this file except in compliance with 7adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * the License. You may obtain a copy of the License at 8adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * 9adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 10adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * 11adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Unless required by applicable law or agreed to in writing, software 12adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 13adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * See the License for the specific language governing permissions and 15adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * limitations under the License. 16adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 17adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 18adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project/** 19adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project* @author Alexander Y. Kleymenov 20adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project* @version $Revision$ 21adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project*/ 22adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 23adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectpackage org.apache.harmony.security.x509; 24adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 25adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport java.util.Arrays; 26adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport org.apache.harmony.security.asn1.ASN1Any; 27adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport org.apache.harmony.security.asn1.ASN1Oid; 28adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport org.apache.harmony.security.asn1.ASN1Sequence; 29adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport org.apache.harmony.security.asn1.ASN1Type; 30adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport org.apache.harmony.security.asn1.BerInputStream; 31adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport org.apache.harmony.security.asn1.ObjectIdentifier; 32adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport org.apache.harmony.security.utils.AlgNameMapper; 33adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 34adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 35adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project/** 36adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * The class encapsulates the ASN.1 DER encoding/decoding work 37adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * with the Algorithm Identifier which is a part of X.509 certificate 38adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * (as specified in RFC 3280 - 39adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Internet X.509 Public Key Infrastructure. 40adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Certificate and Certificate Revocation List (CRL) Profile. 41adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * http://www.ietf.org/rfc/rfc3280.txt): 42adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * 43adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * <pre> 44adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * AlgorithmIdentifier ::= SEQUENCE { 45adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * algorithm OBJECT IDENTIFIER, 46f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes * parameters ANY DEFINED BY algorithm OPTIONAL 47adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * } 48adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * </pre> 49adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 505c27fb80ffd335aa45dc8829ba3ecbc18c01e4e8Jesse Wilsonpublic final class AlgorithmIdentifier { 515c27fb80ffd335aa45dc8829ba3ecbc18c01e4e8Jesse Wilson /** the value of algorithm field */ 52adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project private String algorithm; 535c27fb80ffd335aa45dc8829ba3ecbc18c01e4e8Jesse Wilson /** the name of the algorithm */ 54adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project private String algorithmName; 555c27fb80ffd335aa45dc8829ba3ecbc18c01e4e8Jesse Wilson /** the value of parameters field */ 56adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project private byte[] parameters; 575c27fb80ffd335aa45dc8829ba3ecbc18c01e4e8Jesse Wilson /** the encoding of AlgorithmIdentifier value */ 58adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project private byte[] encoding; 59f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes 60adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public AlgorithmIdentifier(String algorithm) { 61adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project this(algorithm, null, null); 62adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 63f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes 64adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public AlgorithmIdentifier(String algorithm, byte[] parameters) { 65adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project this(algorithm, parameters, null); 66adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 67adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 685c27fb80ffd335aa45dc8829ba3ecbc18c01e4e8Jesse Wilson private AlgorithmIdentifier(String algorithm, byte[] parameters, byte[] encoding) { 69adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project this.algorithm = algorithm; 70adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project this.parameters = parameters; 71adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project this.encoding = encoding; 72adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 73f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes 74adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 750251c5ab1c073ee09ba6673383846d2ccf58abf9Kenny Root * For testing when algorithmName is not known, but algorithm OID is. 760251c5ab1c073ee09ba6673383846d2ccf58abf9Kenny Root */ 770251c5ab1c073ee09ba6673383846d2ccf58abf9Kenny Root public AlgorithmIdentifier(String algorithm, String algorithmName) { 780251c5ab1c073ee09ba6673383846d2ccf58abf9Kenny Root this(algorithm, null, null); 790251c5ab1c073ee09ba6673383846d2ccf58abf9Kenny Root this.algorithmName = algorithmName; 800251c5ab1c073ee09ba6673383846d2ccf58abf9Kenny Root } 810251c5ab1c073ee09ba6673383846d2ccf58abf9Kenny Root 820251c5ab1c073ee09ba6673383846d2ccf58abf9Kenny Root /** 83adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Returns the value of algorithm field of the structure. 84adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 85adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public String getAlgorithm() { 86adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return algorithm; 87adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 88adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 89adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 90adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Returns the name of the algorithm corresponding to 91adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * its OID. If there is no the such correspondence, 92adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * algorithm OID is returned. 93adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 94adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public String getAlgorithmName() { 95adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (algorithmName == null) { 96adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project algorithmName = AlgNameMapper.map2AlgName(algorithm); 97adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (algorithmName == null) { 98adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project algorithmName = algorithm; 99adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 100adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 101adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return algorithmName; 102adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 103adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 104adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 105adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Returns the value of parameters field of the structure. 106adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 107adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public byte[] getParameters() { 108adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return parameters; 109adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 110f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes 111adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 112adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Returns ASN.1 encoded form of this X.509 AlgorithmIdentifier value. 113adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 114adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public byte[] getEncoded() { 115adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (encoding == null) { 116adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project encoding = ASN1.encode(this); 117adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 118adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return encoding; 119adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 120f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes 1215c27fb80ffd335aa45dc8829ba3ecbc18c01e4e8Jesse Wilson @Override public boolean equals(Object ai) { 122adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (!(ai instanceof AlgorithmIdentifier)) { 123adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return false; 124adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 125adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project AlgorithmIdentifier algid = (AlgorithmIdentifier) ai; 126adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return (algorithm.equals(algid.algorithm)) 127adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project && ((parameters == null) 128adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project ? algid.parameters == null 129adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project : Arrays.equals(parameters, algid.parameters)); 130adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 131f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes 1325c27fb80ffd335aa45dc8829ba3ecbc18c01e4e8Jesse Wilson @Override public int hashCode() { 133196f44e24830d0e7fd17eba627704a162eba779eElliott Hughes return algorithm.hashCode() * 37 + (parameters != null ? Arrays.hashCode(parameters) : 0); 1342f9e468ed4985edfd5e351faf2089d91e561e41dElliott Hughes } 135f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes 1368216dc1fd9d31867770439985c3d66570330e4c7Elliott Hughes public void dumpValue(StringBuilder sb) { 1378216dc1fd9d31867770439985c3d66570330e4c7Elliott Hughes sb.append(getAlgorithmName()); 138adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (parameters == null) { 1398216dc1fd9d31867770439985c3d66570330e4c7Elliott Hughes sb.append(", no params, "); 140adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } else { 1418216dc1fd9d31867770439985c3d66570330e4c7Elliott Hughes sb.append(", params unparsed, "); 142adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 1438216dc1fd9d31867770439985c3d66570330e4c7Elliott Hughes sb.append("OID = "); 1448216dc1fd9d31867770439985c3d66570330e4c7Elliott Hughes sb.append(getAlgorithm()); 145adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 146adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 147adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 148adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Custom AlgorithmIdentifier DER encoder/decoder 149adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 150adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public static final ASN1Sequence ASN1 = new ASN1Sequence(new ASN1Type[] { 151adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project ASN1Oid.getInstance(), ASN1Any.getInstance() }) { 152adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project { 153adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project setOptional(1); // parameters are optional 154adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 155adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 1565c27fb80ffd335aa45dc8829ba3ecbc18c01e4e8Jesse Wilson @Override protected Object getDecodedObject(BerInputStream in) { 157adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project Object[] values = (Object[]) in.content; 158adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return new AlgorithmIdentifier(ObjectIdentifier 159adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project .toString((int[]) values[0]), (byte[]) values[1]); 160adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 161adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 1625c27fb80ffd335aa45dc8829ba3ecbc18c01e4e8Jesse Wilson @Override protected void getValues(Object object, Object[] values) { 163adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 164adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project AlgorithmIdentifier aID = (AlgorithmIdentifier) object; 165adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 166adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project values[0] = ObjectIdentifier.toIntArray(aID.getAlgorithm()); 167adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project values[1] = aID.getParameters(); 168adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 169adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project }; 170adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project} 171