com.maverick.ssh.components.standalone
Class AES128Ctr

java.lang.Object
  com.maverick.ssh.components.SshCipher
      com.maverick.ssh.components.standalone.CtrBlockCipher
          com.maverick.ssh.components.standalone.AES128Ctr

public class AES128Ctr

extends com.maverick.ssh.components.standalone.CtrBlockCipher

128 bit Counter Mode AES cipher

Author:

Lee David Painter

Field Summary

static java.lang.String

AES128_CTR

Fields inherited from class com.maverick.ssh.components.SshCipher

DECRYPT_MODE, ENCRYPT_MODE

Constructor Summary

AES128Ctr()

Method Summary

int	getBlockSize() Get the cipher block size.
void	init(int mode, byte[] iv, byte[] keydata) Initialize the cipher with up to 40 bytes of iv and key data.
int	processBlock(byte[] in, int inOff, byte[] out, int outOff)
void	transform(byte[] in, int start, byte[] output, int offset, int len) Transform the byte array according to the cipher mode; it is legal for the source and destination arrays to reference the same physical array so care should be taken in the transformation process to safeguard this rule.

Methods inherited from class com.maverick.ssh.components.SshCipher

getAlgorithm, transform

Methods inherited from class java.lang.Object

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

Field Detail

AES128_CTR

public static final java.lang.String AES128_CTR

See Also:

Constant Field Values

Constructor Detail

AES128Ctr

public AES128Ctr()

Method Detail

transform

public void transform(byte[] in,
                      int start,
                      byte[] output,
                      int offset,
                      int len)
               throws java.io.IOException

Description copied from class: SshCipher

Transform the byte array according to the cipher mode; it is legal for the source and destination arrays to reference the same physical array so care should be taken in the transformation process to safeguard this rule.

Specified by:

transform in class SshCipher

Parameters:

in -

start -

output -

offset -

len -

Throws:

java.io.IOException

init

public void init(int mode,
                 byte[] iv,
                 byte[] keydata)
          throws java.io.IOException

Description copied from class: SshCipher

Initialize the cipher with up to 40 bytes of iv and key data. Each implementation should take as much data from the initialization as it needs ignoring any data that it does not require.

Specified by:

init in class SshCipher

Parameters:

mode - the mode to operate

iv - the initiaization vector

keydata - the key data

Throws:

java.io.IOException

getBlockSize

public int getBlockSize()

Description copied from class: SshCipher

Get the cipher block size.

Specified by:

getBlockSize in class SshCipher

Returns:

the block size in bytes.

processBlock

public int processBlock(byte[] in,
                        int inOff,
                        byte[] out,
                        int outOff)
                 throws java.io.IOException

Throws:

java.io.IOException