| /* |
| * Copyright 2010 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| * use this file except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package com.google.gwt.emultest.java.security; |
| |
| import com.google.gwt.emultest.java.util.EmulTestBase; |
| |
| import java.io.UnsupportedEncodingException; |
| import java.security.MessageDigest; |
| |
| /** |
| * Tests the message digest implementations. |
| */ |
| public class MessageDigestTest extends EmulTestBase { |
| |
| /** |
| * Pairs of strings: test data, then MD5 hash. |
| */ |
| private static String[] md5TestData = new String[] { |
| "", |
| "d41d8cd98f00b204e9800998ecf8427e", |
| |
| "a", |
| "0cc175b9c0f1b6a831c399e269772661", |
| |
| "abc", |
| "900150983cd24fb0d6963f7d28e17f72", |
| |
| "message digest", |
| "f96b697d7cb7938d525a2f31aaf161d0", |
| |
| "abcdefghijklmnopqrstuvwxyz", |
| "c3fcd3d76192e4007dfb496cca67e13b", |
| |
| "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789", |
| "d174ab98d277d9f5a5611c2c9f419d9f", |
| |
| "12345678901234567890123456789012345678901234567890123456789012345678901234567890", |
| "57edf4a22be3c955ac49da2e2107b67a", |
| |
| "s nine o'clock at night upon the second of August--the mostterrible August in " |
| + "the history of the world. One might have thoughtalready that God's curse " |
| + "hung heavy over a degenerate world, for therewas an awesome hush and a " |
| + "feeling of vague expectancy in the sultry andstagnant air. The sun had " |
| + "long set, but one blood-red gash like anopen wound lay low in the distant " |
| + "west. Above, the stars were shiningbrightly, and below, the lights of the " |
| + "shipping glimmered in the bay.The two famous Germans stood beside the stone " |
| + "parapet of the gardenwalk, with the long, low, heavily gabled house behind " |
| + "them, and theylooked down upon the broad sweep of the beach at the foot of " |
| + "the greatchalk cliff in which Von Bork, like some wandering eagle, had " |
| + "perchedhimself four years before. They stood with their heads close " |
| + "together,talking in low, confidential tones. From below the two glowing " |
| + "ends oftheir cigars might have been the smouldering eyes of some " |
| + "malignantfiend looking down in the darkness.A remarkable man this Von Bork--a " |
| + "man who could hardly be matched amongall the devoted agents of the Kaiser. " |
| + "It was his talents which hadfirst recommended him for the English mission, " |
| + "the most importantmission of all, but since he had taken it over those " |
| + "talents had becomemore and more manifest to the half-dozen people in the " |
| + "world who werereally in touch with the truth. One of these was his " |
| + "presentcompanion, Baron Von Herling, the chief secretary of the legation,whose " |
| + "huge 100-horse-power Benz car was blocking the country lane as itwaited to " |
| + "waft its owner back to London.'So far as I can judge the trend of events, you " |
| + "will probably be backin Berlin within the week,' the secretary was saying. " |
| + "'When you getthere, my dear Von Bork, I think you will be surprised at the " |
| + "welcomeyou will receive. I happen to know what is thought in the " |
| + "highestquarters of your work in this country.' He was a huge man, " |
| + "thesecretary, deep, broad, and tall, with", |
| "ae610cd119d74e5ac18c111d4a91ef3f", |
| }; |
| |
| private String[] sha256TestData = new String[] { |
| "", |
| "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855", |
| |
| "a", |
| "ca978112ca1bbdcafac231b39a23dc4da786eff8147c4e72b9807785afee48bb", |
| |
| "abc", |
| "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad", |
| |
| "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", |
| "248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1", |
| |
| "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789", |
| "db4bfcbd4da0cd85a60c3c37d3fbd8805c77f15fc6b1fdfe614ee0a7c8fdb4c0", |
| |
| "a1y28pfxfkrb3dc0ysjzkc4ef5510a8fleg5nf7ld911lgl7n4bv09em", |
| "6ebf24d2f4ab987311418f72e5ddcb829bdd9f3e54593b6d22b14fb7fe639e4c", |
| |
| "The SHA (Secure Hash Algorithm) is one of a number of cryptographic hash functions." |
| + " A cryptographic hash is like a signature for a text or a data file." |
| + " SHA-256 algorithm generates an almost-unique, fixed size 256-bit (32-byte) hash." |
| + " Hash is a one way function – it cannot be decrypted back. This makes it suitable for" |
| + " password validation, challenge hash authentication, anti-tamper, digital signatures.", |
| "d37e2b4fab26640551c69abc3bdf1c14534b215c7f3e1d44c0b65029c99147fb" |
| }; |
| |
| private static void assertDigest(String expected, MessageDigest md, |
| String data) throws UnsupportedEncodingException { |
| byte[] bytes = data.getBytes("UTF-8"); |
| byte[] digest = md.digest(bytes); |
| assertEquals(expected, toHexString(digest)); |
| } |
| |
| private static void assertDigestByByte(String expected, MessageDigest md, |
| String data) throws UnsupportedEncodingException { |
| byte[] bytes = data.getBytes("UTF-8"); |
| for (int i = 0; i < bytes.length; ++i) { |
| md.update(bytes[i]); |
| } |
| byte[] digest = md.digest(); |
| assertEquals(expected, toHexString(digest)); |
| } |
| |
| private static String toHexString(byte[] bytes) { |
| StringBuilder buf = new StringBuilder(); |
| for (int i = 0; i < bytes.length; ++i) { |
| String hex = Integer.toHexString(bytes[i] & 255); |
| buf.append("00".substring(hex.length())).append(hex); |
| } |
| return buf.toString(); |
| } |
| |
| public void testMd5() throws Exception { |
| MessageDigest md5 = MessageDigest.getInstance("MD5"); |
| for (int i = 0; i < md5TestData.length; i += 2) { |
| assertDigest(md5TestData[i + 1], md5, md5TestData[i]); |
| } |
| } |
| |
| public void testMd5ByBytes() throws Exception { |
| MessageDigest md5 = MessageDigest.getInstance("MD5"); |
| for (int i = 0; i < md5TestData.length; i += 2) { |
| assertDigestByByte(md5TestData[i + 1], md5, md5TestData[i]); |
| } |
| } |
| |
| public void testSHA256() throws Exception { |
| MessageDigest sha256 = MessageDigest.getInstance("SHA-256"); |
| for (int i = 0; i < sha256TestData.length; i += 2) { |
| assertDigest(sha256TestData[i + 1], sha256, sha256TestData[i]); |
| } |
| } |
| |
| public void testSHA256ByBytes() throws Exception { |
| MessageDigest sha256 = MessageDigest.getInstance("SHA-256"); |
| for (int i = 0; i < sha256TestData.length; i += 2) { |
| assertDigestByByte(sha256TestData[i + 1], sha256, sha256TestData[i]); |
| } |
| } |
| } |