1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package org.apache.harmony.crypto.tests.javax.crypto.func; 17 18 import javax.crypto.Mac; 19 import javax.crypto.spec.SecretKeySpec; 20 21 public class MacThread extends TestThread { 22 MacThread(String[] names) { 23 super(names); 24 } 25 26 @Override 27 public void test() throws Exception { 28 int size = 256; 29 byte[] src1 = new byte[size]; 30 byte[] src2 = new byte[size]; 31 byte[] src3 = new byte[size]; 32 int i; 33 34 for (i = 0; i < size; i++) { 35 src1[i] = (byte)i; 36 src2[i] = (byte)i; 37 src3[i] = (byte)(size - i - 1); 38 } 39 Mac m = Mac.getInstance(algName); 40 byte[] b = {(byte)0, (byte)0, (byte)0, (byte)0, (byte)0}; 41 SecretKeySpec sks = new SecretKeySpec(b, "SHA1"); 42 m.init(sks); 43 44 byte[] res = m.doFinal(src1); 45 String sign1 = new String(res); 46 m.init(sks); 47 res = m.doFinal(src2); 48 String sign2 = new String(res); 49 m.init(sks); 50 res = m.doFinal(src3); 51 String sign3 = new String(res); 52 if (sign1.compareTo(sign2) != 0 || sign1.compareTo(sign3) == 0 || 53 sign2.compareTo(sign3) == 0) { 54 throw new Exception ("Signature is not correct for algorithm " + algName); 55 } 56 } 57 } 58
