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 Project* @author Alexander Y. Kleymenov 19f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project* @version $Revision$ 20f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project*/ 21f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 22f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectpackage javax.crypto.spec; 23f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 24f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport java.security.spec.AlgorithmParameterSpec; 25f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 26f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport org.apache.harmony.crypto.internal.nls.Messages; 27f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 28f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/** 29f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * The algorithm parameter specification for an <i>initialization vector</i>. 30f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 31f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectpublic class IvParameterSpec implements AlgorithmParameterSpec { 32f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 33f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project private final byte[] iv; 34f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 35f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 36f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Creates a new <code>IvParameterSpec</code> instance with the bytes from 37f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the specified buffer <i>iv</i> used as <i>initialization vector</i>. 388207f1e8dbc63916f238f81dc46567c55090e95bJesse Wilson * 39f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param iv 40f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the buffer used as initialization vector. 41f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @throws NullPointerException 42f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * if the specified buffer is null. 43f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 44f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public IvParameterSpec(byte[] iv) { 45f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (iv == null) { 46f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project throw new NullPointerException(Messages.getString("crypto.38")); //$NON-NLS-1$ 47f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 48f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.iv = new byte[iv.length]; 49f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project System.arraycopy(iv, 0, this.iv, 0, iv.length); 50f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 51f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 52f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 53f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Creates a new <code>IvParameterSpec</code> instance with <code>len</code> 54f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * bytes from the specified buffer <code>iv</code> starting at 55f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * <code>offset</code>. 568207f1e8dbc63916f238f81dc46567c55090e95bJesse Wilson * 57f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param iv 58f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the buffer used as initialization vector. 59f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param offset 60f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the offset to start in the buffer. 61f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param len 62f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * the length of the data. 63f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @throws IllegalArgumentException 64f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * if the specified buffer is null or <code>offset</code> and 65f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * <code>len</code> do not specify a valid chunk in the 66f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * specified buffer. 67f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @throws ArrayIndexOutOfBoundsException 68f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * if <code>offset</code> or <code>len</code> are negative. 69f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 70f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public IvParameterSpec(byte[] iv, int offset, int len) { 71f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if ((iv == null) || (iv.length - offset < len)) { 72f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project throw new IllegalArgumentException( 73f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Messages.getString("crypto.39")); //$NON-NLS-1$ 74f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 75f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (offset < 0 || len < 0) { 76f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project throw new ArrayIndexOutOfBoundsException(Messages.getString("crypto.3A")); //$NON-NLS-1$ 77f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 78f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project this.iv = new byte[len]; 79f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project System.arraycopy(iv, offset, this.iv, 0, len); 80f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 81f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 82f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 83f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Returns a copy of the <i>initialization vector</i> data. 848207f1e8dbc63916f238f81dc46567c55090e95bJesse Wilson * 85f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return a copy of the initialization vector data. 86f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 87f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public byte[] getIV() { 88f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project byte[] res = new byte[iv.length]; 89f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project System.arraycopy(iv, 0, res, 0, iv.length); 90f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return res; 91f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 92f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 93f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 94