Class CTRMode

java.lang.Object

com.trilead.ssh2.crypto.cipher.CTRMode

All Implemented Interfaces:

BlockCipher

public class CTRMode
extends Object
implements BlockCipher

This is CTR mode as described in draft-ietf-secsh-newmodes-XY.txt

Version:

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

Field Summary

Fields

Modifier and Type	Field	Description
(package private) BlockCipher	bc
(package private) int	blockSize
(package private) int	count
(package private) boolean	doEncrypt
(package private) byte[]	X
(package private) byte[]	Xenc

Constructor Summary

Constructors

Constructor	Description
CTRMode(BlockCipher tc, byte[] iv, boolean doEnc)

Method Summary

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

Methods inherited from class Object

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

Field Details

X

byte[] X

Xenc

byte[] Xenc

bc

BlockCipher bc

blockSize

int blockSize

doEncrypt

boolean doEncrypt

count

int count

Constructor Details

CTRMode

public CTRMode(BlockCipher tc,
 byte[] iv,
 boolean doEnc)
        throws IllegalArgumentException

Throws:

IllegalArgumentException

Method Details

init

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

Specified by:

init in interface BlockCipher

getBlockSize

public final int getBlockSize()

Specified by:

getBlockSize in interface BlockCipher

transformBlock

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

Specified by:

transformBlock in interface BlockCipher