net.sf.gridarta.utils

Class Xtea

java.lang.Object

net.sf.gridarta.utils.Xtea

public class Xtea
extends java.lang.Object

Implements the XTEA algorithm.

Constructor Summary

Constructors

Constructor and Description
Xtea(byte[] key) Creates a new instance.

Method Summary

Modifier and Type	Method and Description
void	decrypt(byte[] ciphertext, byte[] plaintext) Decrypts a data block.
void	encrypt(byte[] plaintext, byte[] ciphertext) Encrypts a data block.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Xtea

public Xtea(byte[] key)

Creates a new instance.

Parameters:

key - the key to use; must be 16 bytes

Method Detail

encrypt

public void encrypt(byte[] plaintext,
                    byte[] ciphertext)

Encrypts a data block.

Parameters:

plaintext - the block to encrypt; must be 8 bytes

ciphertext - the encrypted block; must be 8 bytes

decrypt

public void decrypt(byte[] ciphertext,
                    byte[] plaintext)

Decrypts a data block.

Parameters:

ciphertext - the block to decrypt; must be 8 bytes

plaintext - the decrypted block; must be 8 bytes