1f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 2f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Licensed to the Apache Software Foundation (ASF) under one or more 3f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * contributor license agreements. See the NOTICE file distributed with 4f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * this work for additional information regarding copyright ownership. 5f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * The ASF licenses this file to You under the Apache License, Version 2.0 6f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * (the "License"); you may not use this file except in compliance with 7f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the License. You may obtain a copy of the License at 8f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 9f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 10f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 11f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 12f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 13f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * See the License for the specific language governing permissions and 15f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * limitations under the License. 16f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 17f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 18f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectpackage javax.crypto.spec; 19f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 20f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport java.security.spec.AlgorithmParameterSpec; 21f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport java.util.Arrays; 22f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 23f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport org.apache.harmony.crypto.internal.nls.Messages; 24f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 25f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/** 26f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * The algorithm parameter specification for the <a 27f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * href="http://www.ietf.org/rfc/rfc2268.txt">RC2</a> algorithm. 28f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 29f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectpublic class RC2ParameterSpec implements AlgorithmParameterSpec { 30f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 31f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project private final int effectiveKeyBits; 32f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project private final byte[] iv; 33f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 34f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 35f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Creates a new <code>RC2ParameterSpec</code> instance with the specified 36f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * effective key length (in bits), 378207f1e8dbc63916f238f81dc46567c55090e95bJesse Wilson * 38f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param effectiveKeyBits 39f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the effective key length (in bits). 40f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 41f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public RC2ParameterSpec(int effectiveKeyBits) { 42f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.effectiveKeyBits = effectiveKeyBits; 43f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project iv = null; 44f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 45f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 46f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 47f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Creates a new <code>RC2ParameterSpec</code> instance with the specified 48f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * effective key length (in bits) and <i>initialization vector</i>. 49f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * <p> 50f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * The size of the <i>initialization vector</i> must be at least 8 bytes 51f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * which are copied to protect them against modification. 528207f1e8dbc63916f238f81dc46567c55090e95bJesse Wilson * 53f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param effectiveKeyBits 54f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the effective key length (in bits). 55f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param iv 56f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the initialization vector. 57f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @throws IllegalArgumentException 58f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * if the initialization vector is null or shorter than 8 bytes. 59f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 60f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public RC2ParameterSpec(int effectiveKeyBits, byte[] iv) { 61f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (iv == null) { 62f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project throw new IllegalArgumentException(Messages.getString("crypto.31")); //$NON-NLS-1$ 63f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 64f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (iv.length < 8) { 65f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project throw new IllegalArgumentException(Messages.getString("crypto.41")); //$NON-NLS-1$ 66f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 67f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.effectiveKeyBits = effectiveKeyBits; 68f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.iv = new byte[8]; 69f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project System.arraycopy(iv, 0, this.iv, 0, 8); 70f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 71f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 72f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 73f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Creates a new <code>RC2ParameterSpec</code> instance with the specified 74f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * effective key length (in bits) and <i>initialization vector<i>. 75f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * <p> 76f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * The size of the <i>initialization vector</i> starting at 77f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * <code>offset</code> must be at least 8 bytes which are copied to protect 78f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * them against modification. 798207f1e8dbc63916f238f81dc46567c55090e95bJesse Wilson * 80f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param effectiveKeyBits 81f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the effective key length (in bits). 82f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param iv 83f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the initialization vector. 84f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param offset 85f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the offset in the initialization vector to start at. 86f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @throws IllegalArgumentException 87f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * if the initialization vector is null or starting at 88f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * <code>offset</code> is shorter than 8 bytes. 89f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 90f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public RC2ParameterSpec(int effectiveKeyBits, byte[] iv, int offset) { 91f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (iv == null) { 92f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project throw new IllegalArgumentException(Messages.getString("crypto.31")); //$NON-NLS-1$ 93f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 94f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (iv.length - offset < 8) { 95f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project throw new IllegalArgumentException(Messages.getString("crypto.41")); //$NON-NLS-1$ 96f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 97f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.effectiveKeyBits = effectiveKeyBits; 98f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.iv = new byte[8]; 99f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project System.arraycopy(iv, offset, this.iv, 0, 8); 100f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 101f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 102f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 103f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Returns the effective key length (in bits). 1048207f1e8dbc63916f238f81dc46567c55090e95bJesse Wilson * 105f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return the effective key length (in bits). 106f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 107f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public int getEffectiveKeyBits() { 108f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return effectiveKeyBits; 109f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 110f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 111f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 112f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Returns a copy of the initialization vector. 1138207f1e8dbc63916f238f81dc46567c55090e95bJesse Wilson * 114f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return a copy of the initialization vector, or null if none specified. 115f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 116f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public byte[] getIV() { 117f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (iv == null) { 118f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return null; 119f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 120f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project byte[] result = new byte[iv.length]; 121f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project System.arraycopy(iv, 0, result, 0, iv.length); 122f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return result; 123f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 124f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 125f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 126f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Compares the specified object to this <code>RC2ParameterSpec</code> 127f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * instance. 1288207f1e8dbc63916f238f81dc46567c55090e95bJesse Wilson * 129f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param obj 130f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the object to compare. 131f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return true if the effective key length and the initialization vector of 132f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * both objects are equal, otherwise false. 133f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 134f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 135f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public boolean equals(Object obj) { 136f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (obj == this) { 137f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return true; 138f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 139f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!(obj instanceof RC2ParameterSpec)) { 140f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 141f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 142f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project RC2ParameterSpec ps = (RC2ParameterSpec) obj; 143f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return (effectiveKeyBits == ps.effectiveKeyBits) 144f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project && (Arrays.equals(iv, ps.iv)); 145f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 146f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 147f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 148f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Returns the hash code of this <code>RC2ParameterSpec</code> instance. 1498207f1e8dbc63916f238f81dc46567c55090e95bJesse Wilson * 150f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return the hash code. 151f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 152f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 153f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public int hashCode() { 154f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int result = effectiveKeyBits; 155f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (iv == null) { 156f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return result; 157f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 158f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project for (byte element : iv) { 159f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project result += element; 160f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 161f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return result; 162f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 163f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 164f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 165