com.trilead.ssh2.crypto.cipher

Class BlowFish

java.lang.Object

com.trilead.ssh2.crypto.cipher.BlowFish

All Implemented Interfaces:

BlockCipher

public class BlowFish
extends java.lang.Object
implements BlockCipher

A class that provides Blowfish key encryption operations, such as encoding data and generating keys. All the algorithms herein are from Applied Cryptography and implement a simplified cryptography interface.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	BlowFish.CBC
static class	BlowFish.CTR

Constructor Summary

Constructors

Constructor and Description
BlowFish()

Method Summary

Modifier and Type	Method and Description
java.lang.String	getAlgorithmName()
int	getBlockSize()
void	init(boolean encrypting, byte[] key, byte[] iv) initialise a Blowfish cipher.
void	transformBlock(byte[] in, int inOff, byte[] out, int outOff)

Methods inherited from class java.lang.Object

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

Constructor Detail

BlowFish

public BlowFish()

Method Detail

init

public void init(boolean encrypting,
                 byte[] key,
                 byte[] iv)

initialise a Blowfish cipher.

Specified by:

init in interface BlockCipher

Parameters:

encrypting - whether or not we are for encryption.

key - the key required to set up the cipher.

iv - initial vector; not used for stream ciphers

Throws:

java.lang.IllegalArgumentException - if the params argument is inappropriate.

getAlgorithmName

public java.lang.String getAlgorithmName()

transformBlock

public final void transformBlock(byte[] in,
                                 int inOff,
                                 byte[] out,
                                 int outOff)

Specified by:

transformBlock in interface BlockCipher

getBlockSize

public int getBlockSize()

Specified by:

getBlockSize in interface BlockCipher