Package com.trilead.ssh2.crypto.cipher

Class CBCMode

java.lang.Object

com.trilead.ssh2.crypto.cipher.CBCMode

All Implemented Interfaces:

BlockCipher

public class CBCMode
extends java.lang.Object
implements BlockCipher

CBCMode.

Version:

$Id: CBCMode.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $

Field Summary

Fields

Modifier and Type	Field	Description
(package private) int	blockSize
(package private) byte[]	cbc_vector
(package private) boolean	doEncrypt
(package private) BlockCipher	tc
(package private) byte[]	tmp_vector

Constructor Summary

Constructors

Constructor	Description
CBCMode(BlockCipher tc, byte[] iv, boolean doEncrypt)

Method Summary

Modifier and Type	Method	Description
private void	decryptBlock(byte[] src, int srcoff, byte[] dst, int dstoff)
private void	encryptBlock(byte[] src, int srcoff, byte[] dst, int dstoff)
int	getBlockSize()
void	init(boolean forEncryption, byte[] key)
void	transformBlock(byte[] src, int srcoff, byte[] dst, int dstoff)

Methods inherited from class java.lang.Object

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

Field Detail

tc

BlockCipher tc

blockSize

int blockSize

doEncrypt

boolean doEncrypt

cbc_vector

byte[] cbc_vector

tmp_vector

byte[] tmp_vector

Constructor Detail

CBCMode

public CBCMode(BlockCipher tc,
               byte[] iv,
               boolean doEncrypt)
        throws java.lang.IllegalArgumentException

Throws:

java.lang.IllegalArgumentException

Method Detail

init

public void init(boolean forEncryption,
                 byte[] key)

Specified by:

init in interface BlockCipher

getBlockSize

public int getBlockSize()

Specified by:

getBlockSize in interface BlockCipher

encryptBlock

private void encryptBlock(byte[] src,
                          int srcoff,
                          byte[] dst,
                          int dstoff)

decryptBlock

private void decryptBlock(byte[] src,
                          int srcoff,
                          byte[] dst,
                          int dstoff)

transformBlock

public void transformBlock(byte[] src,
                           int srcoff,
                           byte[] dst,
                           int dstoff)

Specified by:

transformBlock in interface BlockCipher