Package javax.crypto

Examples of javax.crypto.Cipher.doFinal()

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    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
    javax.crypto.SecretKey key = keyFactory.generateSecret(dks);
    Cipher cipher = Cipher.getInstance("DES");
    cipher.init(1, key, sr);
    byte data[] = plainText;
    byte encryptedData[] = cipher.doFinal(data);
    return encryptedData;
  }

  private byte desKey[];
}
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      BigInteger n = new BigInteger(secret, 16);
      byte[] encoding = n.toByteArray();
     
      Cipher cipher = Cipher.getInstance("Blowfish");
      cipher.init(Cipher.DECRYPT_MODE, key);
      byte[] decode = cipher.doFinal(encoding);
      return new String(decode);
   }

    private static String decodePBE(MBeanServerConnection server, String password, String jaasSecurityDomain) throws Exception
    {
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    try {
          SecretKeySpec skeySpec = new SecretKeySpec(key, "AES");
          IvParameterSpec ivSpec = new IvParameterSpec(iv);
          Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
          cipher.init(Cipher.DECRYPT_MODE, skeySpec, ivSpec);
          return cipher.doFinal(encrypted);
    } catch(InvalidKeyException e) {
      throw new IllegalArgumentException(
          "if you see 'java.security.InvalidKeyException: Illegal key size', it cause by default JCE does not support 256-aes key for shipping reason.\n" +
          "but you can download those two policy files" +
          "    (US_export_policy.jar,local_policy.jar : Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files) " +
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    protected byte[] encrypt(RSAPublicKey publicKey, byte[] obj) {
        if (publicKey != null) {
            try {
                Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
                cipher.init(Cipher.ENCRYPT_MODE, publicKey);
                return cipher.doFinal(obj);
            } catch (Exception e){
                e.printStackTrace();
            }
        }
        return null;
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        if (privateKey != null) {
                try{
                    Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");

                    cipher.init(Cipher.DECRYPT_MODE, privateKey);
                    return cipher.doFinal(obj);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
   
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      KeySpec keySpec = new DESKeySpec(passPhrase);
      SecretKey key = SecretKeyFactory.getInstance("DES").generateSecret(
          keySpec);
      Cipher cipher = Cipher.getInstance(key.getAlgorithm());
      cipher.init(Cipher.ENCRYPT_MODE, key);
      return toHexString(cipher.doFinal(msg.getBytes()));
    } catch (Exception e) {
      return null;
    }
  }
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      KeySpec keySpec = new DESKeySpec(passPhrase);
      SecretKey key = SecretKeyFactory.getInstance("DES").generateSecret(
          keySpec);
      Cipher cipher = Cipher.getInstance(key.getAlgorithm());
      cipher.init(Cipher.DECRYPT_MODE, key);
      return new String(cipher.doFinal(fromHexString(msg)));
    } catch (Exception e) {
      return null;
    }
  }
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         sm.checkPermission(encodePermission);
      }

      Cipher cipher = Cipher.getInstance(cipherAlgorithm);
      cipher.init(Cipher.ENCRYPT_MODE, cipherKey, cipherSpec);
      byte[] encoding = cipher.doFinal(secret);
      return encoding;
   }

   /*
    * (non-Javadoc)
 
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      if (sm != null)
         sm.checkPermission(decodePermission);

      Cipher cipher = Cipher.getInstance(cipherAlgorithm);
      cipher.init(Cipher.DECRYPT_MODE, cipherKey, cipherSpec);
      byte[] decode = cipher.doFinal(secret);
      return decode;
   }

   /*
    * (non-Javadoc)
 
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                KeySpec keyspec = new DESedeKeySpec(keydata);
                Key key = SecretKeyFactory.getInstance("DESede").generateSecret(keyspec);
                cipher.init(Cipher.DECRYPT_MODE, key,
                    new IvParameterSpec(iv, 0, cipher.getBlockSize()));

                ByteArrayReader data = new ByteArrayReader(cipher.doFinal(
                            keyblob));

                if (data.readInt() == cookie) {
                    keyblob = data.readBinaryString();
                } else {
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