/*
    *  Licensed to the Apache Software Foundation (ASF) under one
    *  or more contributor license agreements.  See the NOTICE file
    *  distributed with this work for additional information
    *  regarding copyright ownership.  The ASF licenses this file
    *  to you 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 org.apache.mina.proxy;
  
  import static org.apache.mina.proxy.utils.ByteUtilities.asHex;
  import static org.junit.Assert.assertEquals;
  
  import java.security.MessageDigest;
  import java.security.NoSuchAlgorithmException;
  import java.security.NoSuchProviderException;
  import java.security.Security;
  
  import org.apache.mina.proxy.utils.MD4Provider;
  import org.junit.Before;
  import org.junit.Test;
  
  /**
   * MD4Test.java - JUnit testcase that tests the rfc 1320 test suite.
   * @see <a href="http://www.ietf.org/rfc/rfc1320.txt">RFC 1320</a>
   * 
   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
   * @since MINA 2.0.0-M3
   */
  public class MD4Test {
  
      /**
       * {@inheritDoc}
       */
      @Before
      public void setUp() throws Exception {
          if (Security.getProvider(MD4Provider.PROVIDER_NAME) == null) {
              System.out.print("Adding MINA provider...");
              Security.addProvider(new MD4Provider());
              //System.out.println(" [Ok]");
          }
      }
  
      /**
       * Test suite for the MD4 algorithm. 
       */
      @Test
      public void testRFCVectors() throws NoSuchAlgorithmException,
              NoSuchProviderException {
          MessageDigest md4 = MessageDigest.getInstance("MD4",
                  MD4Provider.PROVIDER_NAME);
          doTest(md4, "31d6cfe0d16ae931b73c59d7e0c089c0", "");
          doTest(md4, "bde52cb31de33e46245e05fbdbd6fb24", "a");
          doTest(md4, "a448017aaf21d8525fc10ae87aa6729d", "abc");
          doTest(md4, "d9130a8164549fe818874806e1c7014b", "message digest");
          doTest(md4, "d79e1c308aa5bbcdeea8ed63df412da9",
                  "abcdefghijklmnopqrstuvwxyz");
          doTest(md4, "043f8582f241db351ce627e153e7f0e4",
                  "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789");
          doTest(
                  md4,
                  "e33b4ddc9c38f2199c3e7b164fcc0536",
                  "12345678901234567890123456789012345678901234567890123456789012345678901234567890");
      }
  
      /**
       * Original test vector found on <a href="http://en.wikipedia.org/wiki/MD4">wikipedia(en)</a>
       * and <a href="http://fr.wikipedia.org/wiki/MD4">wikipedia(fr)</a>
       */
      @Test
      public void testWikipediaVectors() throws NoSuchAlgorithmException,
              NoSuchProviderException {
          MessageDigest md4 = MessageDigest.getInstance("MD4",
                  MD4Provider.PROVIDER_NAME);
          doTest(md4, "b94e66e0817dd34dc7858a0c131d4079",
                  "Wikipedia, l'encyclopedie libre et gratuite");
          doTest(md4, "1bee69a46ba811185c194762abaeae90",
                  "The quick brown fox jumps over the lazy dog");
          doTest(md4, "b86e130ce7028da59e672d56ad0113df",
                  "The quick brown fox jumps over the lazy cog");
      }
  
      /**
       * Performs md4 digesting on the provided test vector and verifies that the
       * result equals to the expected result.
       * 
       * @param md4 the md4 message digester
       * @param expected the expected hex formatted string
      * @param testVector the string message
      */
     private static void doTest(MessageDigest md4, String expected,
             String testVector) {
         String result = asHex(md4.digest(testVector.getBytes()));
         assertEquals(expected, result);
     }
 }