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 * TODO 20adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * 1. The class extends the PrivateKeyImpl class in "org.apache.harmony.security" package. 21adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * 22adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * 2. See a compatibility with RI comments 23adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * in the below "DSAPrivateKeyImpl(PKCS8EncodedKeySpec keySpec)" constructor. 24adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 25adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 26adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 27adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectpackage org.apache.harmony.security.provider.crypto; 28adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 29adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport java.io.IOException; 302f9e468ed4985edfd5e351faf2089d91e561e41dElliott Hughesimport java.io.NotActiveException; 31adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport java.math.BigInteger; 32adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport java.security.interfaces.DSAParams; 33adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport java.security.interfaces.DSAPrivateKey; 34adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport java.security.spec.DSAParameterSpec; 35adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport java.security.spec.DSAPrivateKeySpec; 36adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport java.security.spec.InvalidKeySpecException; 37adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport java.security.spec.PKCS8EncodedKeySpec; 38adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport org.apache.harmony.security.PrivateKeyImpl; 39adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport org.apache.harmony.security.asn1.ASN1Integer; 40adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport org.apache.harmony.security.pkcs8.PrivateKeyInfo; 41adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport org.apache.harmony.security.utils.AlgNameMapper; 42adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport org.apache.harmony.security.x509.AlgorithmIdentifier; 43adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 44adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project/** 45adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * The class provides DSAPrivateKey functionality by extending a class implementing PrivateKey 46adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * and implementing methods defined in both interfaces, DSAKey and DSAPrivateKey 47adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 48adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectpublic class DSAPrivateKeyImpl extends PrivateKeyImpl implements DSAPrivateKey { 49adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 50adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 51adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @serial 52adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 53adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project private static final long serialVersionUID = -4716227614104950081L; 54adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 552f9e468ed4985edfd5e351faf2089d91e561e41dElliott Hughes private BigInteger x, g, p, q; 56adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 572f9e468ed4985edfd5e351faf2089d91e561e41dElliott Hughes private transient DSAParams params; 58adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 59adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 60adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Creates object from DSAPrivateKeySpec. 61adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * 62adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @param keySpec - a DSAPrivateKeySpec object 63adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 64adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public DSAPrivateKeyImpl(DSAPrivateKeySpec keySpec) { 65adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 66f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes super("DSA"); 67adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 68adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project PrivateKeyInfo pki; 69adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 702f9e468ed4985edfd5e351faf2089d91e561e41dElliott Hughes g = keySpec.getG(); 712f9e468ed4985edfd5e351faf2089d91e561e41dElliott Hughes p = keySpec.getP(); 722f9e468ed4985edfd5e351faf2089d91e561e41dElliott Hughes q = keySpec.getQ(); 73adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 74adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project ThreeIntegerSequence threeInts = new ThreeIntegerSequence(p 75adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project .toByteArray(), q.toByteArray(), g.toByteArray()); 76adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 77adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project AlgorithmIdentifier ai = new AlgorithmIdentifier(AlgNameMapper 78f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes .map2OID("DSA"), 79adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project threeInts.getEncoded()); 80adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project x = keySpec.getX(); 81adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 82adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project pki = new PrivateKeyInfo(0, ai, ASN1Integer.getInstance().encode( 83adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project x.toByteArray()), null); 84adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 85adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project setEncoding(pki.getEncoded()); 86adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 87adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project params = new DSAParameterSpec(p, q, g); 88adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 89adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 90adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 91adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Creates object from PKCS8EncodedKeySpec. 92adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * 93adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @param keySpec - a XPKCS8EncodedKeySpec object 94adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * 95adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @throws InvalidKeySpecException - if key data cannot be obtain from encoded format 96adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 97adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public DSAPrivateKeyImpl(PKCS8EncodedKeySpec keySpec) 98adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project throws InvalidKeySpecException { 99adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 100f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes super("DSA"); 101adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 102adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project AlgorithmIdentifier ai; 103adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project ThreeIntegerSequence threeInts = null; 104adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 105adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project String alg, algName; 106adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 107171dc20afe5071d5cbfad7103903bfa2c1f8d00fElliott Hughes byte[] encoding = keySpec.getEncoded(); 108adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 109adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project PrivateKeyInfo privateKeyInfo = null; 110adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 111adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project try { 112adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project privateKeyInfo = (PrivateKeyInfo) PrivateKeyInfo.ASN1 113adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project .decode(encoding); 114adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } catch (IOException e) { 115897538a36c18f4db8f9f68ee566aec0bda842e9fElliott Hughes throw new InvalidKeySpecException("Failed to decode keySpec encoding: " + e); 116adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 117adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 118adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project try { 119adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project x = new BigInteger((byte[]) ASN1Integer.getInstance().decode( 120adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project privateKeyInfo.getPrivateKey())); 121adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } catch (IOException e) { 122897538a36c18f4db8f9f68ee566aec0bda842e9fElliott Hughes throw new InvalidKeySpecException("Failed to decode parameters: " + e); 123adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 124adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 125adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project ai = privateKeyInfo.getAlgorithmIdentifier(); 126adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project try { 127adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project threeInts = (ThreeIntegerSequence) ThreeIntegerSequence.ASN1 128adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project .decode(ai.getParameters()); 129adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } catch (IOException e) { 130897538a36c18f4db8f9f68ee566aec0bda842e9fElliott Hughes throw new InvalidKeySpecException("Failed to decode parameters: " + e); 131adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 1322f9e468ed4985edfd5e351faf2089d91e561e41dElliott Hughes p = new BigInteger(threeInts.p); 1332f9e468ed4985edfd5e351faf2089d91e561e41dElliott Hughes q = new BigInteger(threeInts.q); 1342f9e468ed4985edfd5e351faf2089d91e561e41dElliott Hughes g = new BigInteger(threeInts.g); 1352f9e468ed4985edfd5e351faf2089d91e561e41dElliott Hughes params = new DSAParameterSpec(p, q, g); 136adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project setEncoding(encoding); 137adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 138f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes /* 139adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * the following code implements RI behavior 140adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 141adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project alg = ai.getAlgorithm(); 142adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project algName = AlgNameMapper.map2AlgName(alg); 143adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project setAlgorithm(algName == null ? alg : algName); 144adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 145adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 146adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public BigInteger getX() { 147adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return x; 148adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 149adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 150adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public DSAParams getParams() { 151adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project return params; 152adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 153f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes 1542f9e468ed4985edfd5e351faf2089d91e561e41dElliott Hughes private void readObject(java.io.ObjectInputStream in) throws NotActiveException, IOException, ClassNotFoundException { 1559efa300c26865520498c0ed132ff9ebe499e7d84Elliott Hughes in.defaultReadObject(); 1569efa300c26865520498c0ed132ff9ebe499e7d84Elliott Hughes params = new DSAParameterSpec(p, q, g); 1572f9e468ed4985edfd5e351faf2089d91e561e41dElliott Hughes } 158adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 159adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project} 160