Package com.authlete.common.util.security

Class CodecCipher

  • Direct Known Subclasses:
    AESCipher
    public class CodecCipher
extends Object
    Cipher with encoder and decoder. 
     // This example shows encryption/decryption using "AES/CBC/PKCS5Padding",
 // but AESCipher is much easier to use for "AES/CBC/PKCS5Padding".

 // Prepare cipher initialization parameters.
 Key key
     = new SecretKeySpec("1234567890123456".getBytes("UTF-8"), "AES");
 AlgorithmParameterSpec spec
     = new IvParameterSpec("abcdefghijklmnop".getBytes("UTF-8"));

 // Create a cipher using "AES/CBC/PKCS5Padding".
 String transformation = StandardCipherTransformations.AES_CBC_PKCS5PADDING;
 CodecCipher cipher = new CodecCipher(transformation);

 // Set initialization parameters.
 cipher.setInit(key, spec);

 // Encryption & decryption.
 // 'plaintext' and 'decrypted' have the same value.
 String plaintext = "plain text";
 String encrypted = cipher.encrypt(plaintext);
 String decrypted = cipher.decrypt(encrypted);

 // In the above example, 'encrypted' is encoded by Base64 (default).
 // If you want to change the format, use setCoder method.
 // For example, to change the format to hexadecimal:
 Hex hex = new org.apache.commons.codec.binary.Hex();
 cipher.setCoder(hex);

 // Binary representation (only "0"s and "1"s) also can be used.
 BinaryCodec binary = new org.apache.commons.codec.BinaryCodec();
 cipher.setCoder(binary);

 // Coder can be specified as a parameter of some constructors.
 cipher = new CodecCipher("AES/CBC/PKCS5Padding", hex);

 // If you want, an encoder and a decoder can be set separately.
 cipher.setEncoder(hex);
 cipher.setDecoder(hex);
    Since:
    4.23
    Author:
    Takahiko Kawasaki
    See Also:
    javax.crypto.Cipher