1/* 2 * Copyright (C) 2009 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 */ 16package tests.targets.security; 17 18import dalvik.annotation.AndroidOnly; 19import java.security.MessageDigest; 20import java.security.NoSuchAlgorithmException; 21import java.security.Provider; 22import java.security.Security; 23import junit.framework.TestCase; 24 25public class MessageDigestTestMD2 extends TestCase { 26 27 @AndroidOnly("Android doesn't include MD2 message digest algorithm") 28 public void testMessageDigest1() throws Exception{ 29 try { 30 MessageDigest digest = MessageDigest.getInstance("MD2"); 31 fail("MD2 MessageDigest algorithm must not be supported"); 32 } catch (NoSuchAlgorithmException e) { 33 // expected 34 } 35 36 try { 37 MessageDigest digest = MessageDigest.getInstance( 38 "1.2.840.113549.2.2"); 39 fail("MD2 MessageDigest algorithm must not be supported"); 40 } catch (NoSuchAlgorithmException e) { 41 // expected 42 } 43 } 44 45 @AndroidOnly("Android allows usage of MD2 in third party providers") 46 public void testMessageDigest2() throws Exception{ 47 48 Provider provider = new MyProvider(); 49 Security.addProvider(provider); 50 51 try { 52 MessageDigest digest = MessageDigest.getInstance("MD2"); 53 54 digest = MessageDigest.getInstance("1.2.840.113549.2.2"); 55 } finally { 56 Security.removeProvider(provider.getName()); 57 } 58 } 59 60 public final class MyProvider extends Provider { 61 public MyProvider() { 62 super("MessageDigestMD2Test", 1.00, "TestProvider"); 63 put("MessageDigest.MD2", 64 "tests.targets.security.MessageDigestTestMD2$MD2"); 65 put("Alg.Alias.MessageDigest.1.2.840.113549.2.2", "MD2"); 66 } 67 } 68 69 public static class MD2 extends MessageDigest { 70 71 public MD2() { 72 super("MD2"); 73 } 74 75 protected MD2(String algorithm) { 76 super(algorithm); 77 } 78 79 @Override 80 protected byte[] engineDigest() { 81 return null; 82 } 83 84 @Override 85 protected void engineReset() { 86 } 87 88 @Override 89 protected void engineUpdate(byte input) { 90 } 91 92 @Override 93 protected void engineUpdate(byte[] input, int offset, int len) { 94 } 95 } 96} 97