org.bouncycastle.crypto.engines.DESEngine Java Examples

The following examples show how to use org.bouncycastle.crypto.engines.DESEngine. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: BouncycastleTests.java    From super-cloudops with Apache License 2.0 6 votes vote down vote up 
public static void des8Test() {
	byte[] key = new CodecSource("12345678").getBytes();
	byte[] input = new CodecSource("12345678").getBytes();
	byte[] out = new byte[8];

	// 使用DESEngine进行加密
	DESEngine desEngine = new DESEngine();
	desEngine.init(true, new KeyParameter(key));
	desEngine.processBlock(input, 0, out, 0);
	System.out.println("des encrypt=" + new CodecSource(out).toBase64());

	// 使用DESEngine进行解密
	desEngine.init(false, new KeyParameter(key));
	desEngine.processBlock(input, 0, out, 0);
	System.out.println("des decrypt=" + new CodecSource(out).toBase64());
}
Example #2
Source File: UploadEncryptFileController.java    From Spring-MVC-Blueprints with MIT License 6 votes vote down vote up 
private byte[] encryptDESFile(String keys, byte[] plainText) {
BlockCipher engine = new DESEngine();

      byte[] key = keys.getBytes();
      byte[] ptBytes = plainText;
      BufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(engine));
      cipher.init(true, new KeyParameter(key));
      byte[] rv = new byte[cipher.getOutputSize(ptBytes.length)];
      int tam = cipher.processBytes(ptBytes, 0, ptBytes.length, rv, 0);
      try {
          cipher.doFinal(rv, tam);
      } catch (Exception ce) {
          ce.printStackTrace();
      }
      return rv;
  }
Example #3
Source File: DESEncrypter.java    From gocd with Apache License 2.0 6 votes vote down vote up 
private static String decrypt(byte[] key, String cipherText) throws CryptoException {
    try {
        PaddedBufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new DESEngine()));
        cipher.init(false, new KeyParameter(key));
        byte[] cipherTextBytes = DECODER.decode(cipherText);

        byte[] plainTextBytes = new byte[cipher.getOutputSize(cipherTextBytes.length)];
        int outputLength = cipher.processBytes(cipherTextBytes, 0, cipherTextBytes.length, plainTextBytes, 0);
        cipher.doFinal(plainTextBytes, outputLength);
        int paddingStarts = plainTextBytes.length - 1;
        for (; paddingStarts >= 0; paddingStarts--) {
            if (plainTextBytes[paddingStarts] != 0) {
                break;
            }
        }
        return new String(plainTextBytes, 0, paddingStarts + 1);
    } catch (Exception e) {
        throw new CryptoException(e);
    }
}
Example #4
Source File: DownloadDecryptFileController.java    From Spring-MVC-Blueprints with MIT License 5 votes vote down vote up 
public byte[] decryptDESFile(String key, byte[] cipherText) {
BlockCipher engine = new DESEngine();
      byte[] bytes = key.getBytes();
      BufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(engine));
      cipher.init(false, new KeyParameter(bytes));
      byte[] rv = new byte[cipher.getOutputSize(cipherText.length)];
      int tam = cipher.processBytes(cipherText, 0, cipherText.length, rv, 0);
      try {
          cipher.doFinal(rv, tam);
      } catch (Exception ce) {
          ce.printStackTrace();
      }
      return rv;
  }
Example #5
Source File: DESEncrypter.java    From gocd with Apache License 2.0 5 votes vote down vote up 
private static String encrypt(byte[] key, String plainText) throws CryptoException {
    try {
        PaddedBufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new DESEngine()));
        KeyParameter keyParameter = new KeyParameter(key);
        cipher.init(true, keyParameter);
        byte[] plainTextBytes = plainText.getBytes();
        byte[] cipherTextBytes = new byte[cipher.getOutputSize(plainTextBytes.length)];
        int outputLength = cipher.processBytes(plainTextBytes, 0, plainTextBytes.length, cipherTextBytes, 0);
        cipher.doFinal(cipherTextBytes, outputLength);
        return ENCODER.encodeToString(cipherTextBytes).trim();
    } catch (Exception e) {
        throw new CryptoException(e);
    }
}