content: /**
   * Copyright 2013 Bruno Oliveira, and individual contributors
   * <p/>
   * 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
   * <p/>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p/>
   * 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.abstractj.kalium.crypto;
  
  import org.junit.Test;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotEquals;
  
  public class AdvancedTest {
  
      @Test
      public void testXsalsa20HappyFlow() {
          Random random = new Random();
          Advanced advanced = new Advanced();
          byte[] nonce = random.randomBytes(24);
          byte[] key = random.randomBytes(32);
          String pwd = "This is a test message :-)...";
          byte[] plaintext = pwd.getBytes();
          byte[] ciphertext = advanced.crypto_stream_xsalsa20_xor(plaintext, nonce, key); // encrypt
          plaintext = advanced.crypto_stream_xsalsa20_xor(ciphertext, nonce, key); // decrypt
          assertEquals(pwd, new String(plaintext));
      }
  
      @Test
      public void testXsalsa20IncorrectNonce() {
          Random random = new Random();
          Advanced advanced = new Advanced();
          byte[] nonce = random.randomBytes(24);
          byte[] incorrectNonce = random.randomBytes(24);
          byte[] key = random.randomBytes(32);
          String pwd = "This is a test message :-)...";
          byte[] plaintext = pwd.getBytes();
          byte[] ciphertext = advanced.crypto_stream_xsalsa20_xor(plaintext, nonce, key); // encrypt
          plaintext = advanced.crypto_stream_xsalsa20_xor(ciphertext, incorrectNonce, key); // decrypt
          assertNotEquals(pwd, new String(plaintext));
      }
  
      @Test
      public void testXsalsa20IncorrectKey() {
          Random random = new Random();
          Advanced advanced = new Advanced();
          byte[] nonce = random.randomBytes(24);
          byte[] key = random.randomBytes(32);
          byte[] incorrectKey = random.randomBytes(32);
          String pwd = "This is a test message :-)...";
          byte[] plaintext = pwd.getBytes();
          byte[] ciphertext = advanced.crypto_stream_xsalsa20_xor(plaintext, nonce, key); // encrypt
          plaintext = advanced.crypto_stream_xsalsa20_xor(ciphertext, nonce, incorrectKey); // decrypt
          assertNotEquals(pwd, new String(plaintext));
      }
  
      @Test
      public void testXsalsa20IncorrectKeyAndIncorrectNonce() {
          Random random = new Random();
          Advanced advanced = new Advanced();
          byte[] nonce = random.randomBytes(24);
          byte[] incorrectNonce = random.randomBytes(24);
          byte[] key = random.randomBytes(32);
          byte[] incorrectKey = random.randomBytes(32);
          String pwd = "This is a test message :-)...";
          byte[] plaintext = pwd.getBytes();
          byte[] ciphertext = advanced.crypto_stream_xsalsa20_xor(plaintext, nonce, key); // encrypt
          plaintext = advanced.crypto_stream_xsalsa20_xor(ciphertext, incorrectNonce, incorrectKey); // decrypt
          assertNotEquals(pwd, new String(plaintext));
      }
  
  }
  