1 /* 2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 import static java.lang.System.out; 25 26 import java.nio.ByteBuffer; 27 import java.security.MessageDigest; 28 import java.util.Random; 29 30 /** 31 * @test 32 * @bug 8050371 33 * @summary Check md.getDigestLength() equal digest output length with various 34 * algorithm/dataLen/(update,digest methods). 35 * @author Kevin Liu 36 * @key randomness 37 */ 38 39 public class TestSameLength { 40 41 public static void main(String[] args) throws Exception { 42 TestSameLength test = new TestSameLength(); 43 test.run(); 44 } 45 46 private void run() throws Exception { 47 String[] algorithmArr = { 48 "SHA", "Sha", "SHA-1", "sha-1", "SHA1", "sha1", "MD5", "md5", 49 "SHA-224", "SHA-256", "SHA-384", "SHA-512" 50 }; 51 int[] nUpdatesArr = { 52 0, 1, 2, 3 53 }; 54 int[] dataLenArr = { 55 1, 50, 2500, 125000, 6250000 56 }; 57 58 for (String algorithm: algorithmArr) { 59 for (UpdateMethod update: UpdateMethod.values()) { 60 for (int dataLen: dataLenArr) { 61 if (!runTest(algorithm, dataLen, update)) { 62 throw new RuntimeException( 63 "Test failed at algorithm/dataLen/numUpdate:" 64 + algorithm + "/" + dataLen + "/" 65 + update.toString()); 66 } 67 } 68 } 69 } 70 71 out.println("All " + algorithmArr.length * nUpdatesArr.length 72 * dataLenArr.length + " tests Passed"); 73 } 74 75 private boolean runTest(String algo, long dataLen, 76 UpdateMethod whichUpdate) throws Exception { 77 try { 78 // Do initialization 79 byte[] data = new byte[(int) dataLen]; 80 new Random().nextBytes(data); 81 MessageDigest md = MessageDigest.getInstance(algo); 82 int outputLen = md.getDigestLength(); 83 84 // Perform the update using all available/possible update methods 85 whichUpdate.updateDigest(data, md, dataLen); 86 // Get the output 87 byte[] output = md.digest(); 88 89 // Compare input and output 90 return outputLen == output.length; 91 } catch (Exception ex) { 92 System.err.println("Testing: " + algo + "/" + dataLen + "/" 93 + whichUpdate.toString() 94 + " failed with unexpected exception"); 95 ex.printStackTrace(); 96 throw ex; 97 } 98 } 99 100 private static enum UpdateMethod { 101 UPDATE_BYTE { 102 @Override 103 public void updateDigest(byte[] data, 104 MessageDigest md, long dataLen) { 105 106 for (int i = 0; i < dataLen; i++) { 107 md.update(data[i]); 108 } 109 } 110 }, 111 112 UPDATE_BUFFER { 113 @Override 114 public void updateDigest(byte[] data, 115 MessageDigest md, long dataLen) { 116 117 md.update(data); 118 } 119 }, 120 121 UPDATE_BUFFER_LEN { 122 @Override 123 public void updateDigest(byte[] data, 124 MessageDigest md, long dataLen) { 125 126 for (int i = 0; i < dataLen; i++) { 127 md.update(data, i, 1); 128 } 129 } 130 }, 131 132 UPDATE_BYTE_BUFFER { 133 @Override 134 public void updateDigest(byte[] data, 135 MessageDigest md, long dataLen) { 136 137 md.update(ByteBuffer.wrap(data)); 138 } 139 }; 140 141 public abstract void updateDigest(byte[] data, 142 MessageDigest md, long dataLen); 143 } 144 }