1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 /** 19 * @author Vera Y. Petrashkova 20 * @version $Revision$ 21 */ 22 23 package org.apache.harmony.crypto.tests.support; 24 25 import java.security.InvalidAlgorithmParameterException; 26 import java.security.InvalidKeyException; 27 import java.security.Key; 28 import java.security.spec.AlgorithmParameterSpec; 29 30 import javax.crypto.MacSpi; 31 import javax.crypto.spec.SecretKeySpec; 32 33 /** 34 * Additional class for verification of MacGeneratorSpi and MacSpi 35 * 36 */ 37 38 public class MyMacSpi extends MacSpi { 39 40 private int length = 0; 41 @Override engineGetMacLength()42 protected int engineGetMacLength() { 43 return length; 44 } 45 46 @Override engineInit(Key key, AlgorithmParameterSpec params)47 protected void engineInit(Key key, AlgorithmParameterSpec params) 48 throws InvalidKeyException, InvalidAlgorithmParameterException { 49 if (params == null) { 50 if (!(key instanceof SecretKeySpec)) { 51 throw new IllegalArgumentException("params is null and key is SecretKeySpec"); 52 } 53 } 54 } 55 56 @Override engineUpdate(byte input)57 protected void engineUpdate(byte input) { 58 } 59 60 @Override engineUpdate(byte[] input, int offset, int len)61 protected void engineUpdate(byte[] input, int offset, int len) { 62 if (offset >= 0 && len >= 0) { 63 length = len; 64 } 65 } 66 67 @Override engineDoFinal()68 protected byte[] engineDoFinal() { 69 return new byte[length]; 70 } 71 72 @Override engineReset()73 protected void engineReset() { 74 length++; 75 } 76 } 77