com.maverick.ssh.components.standalone
Class AES256Cbc

java.lang.Object
  com.maverick.ssh.components.SshCipher
      com.maverick.ssh.components.standalone.CbcBlockCipher
          com.maverick.ssh.components.standalone.AES256Cbc

public class AES256Cbc

extends com.maverick.ssh.components.standalone.CbcBlockCipher

This cipher can optionally be added to the J2SSH Maverick API. To add the ciphers from this package simply add them to the com.maverick.ssh2.Ssh2Context using the following code.

  import com.sshtools.cipher.*;

 SshConnector con = SshConnector.getInstance();
 Ssh2Context context = (Ssh2Context)con.getContext(SshConnector.SSH2);

 // Add AES
 context.supportedCiphers().add(AES128Cbc.AES128_CBC, AES128Cbc.class);
 context.supportedCiphers().add(AES192Cbc.AES192_CBC, AES192Cbc.class);
 context.supportedCiphers().add(AES256Cbc.AES256_CBC, AES256Cbc.class);

 // Add Twofish - note the 256 bit cipher has two different entries to maintain backwards compatibility
 context.supportedCiphers().add(Twofish128Cbc.TWOFISH128_CBC, Twofish128Cbc.class);
 context.supportedCiphers().add(Twofish192Cbc.TWOFISH192_CBC, Twofish192Cbc.class);
 context.supportedCiphers().add(Twofish256Cbc.TWOFISH256_CBC, Twofish256Cbc.class);
 context.supportedCiphers().add(Twofish256Cbc.TWOFISH_CBC, Twofish256Cbc.class);

 // Add CAST
  context.supportedCiphers().add(CAST128Cbc.CAST128_CBC, CAST128Cbc.class);

 

Field Summary

static java.lang.String

AES256_CBC

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

DECRYPT_MODE, ENCRYPT_MODE

Constructor Summary

AES256Cbc()

Method Summary

int	getBlockSize() Get the block size of the cipher
void	init(int mode, byte[] iv, byte[] keydata) Initialize the CBC block cipher.
void	transform(byte[] in, int start, byte[] output, int offset, int length) Transform the data

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

AES256_CBC

public static final java.lang.String AES256_CBC

See Also:

Constant Field Values

Constructor Detail

AES256Cbc

public AES256Cbc()

Method Detail

init

public void init(int mode,
                 byte[] iv,
                 byte[] keydata)

Initialize the CBC block cipher.

Specified by:

init in class SshCipher

Parameters:

mode - the mode to operate in

iv - the initialization vector

keydata - the key

Throws:

java.io.IOException

getBlockSize

public int getBlockSize()

Get the block size of the cipher

Specified by:

getBlockSize in class SshCipher

Returns:

the block size in bytes

transform

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

Transform the data

Specified by:

transform in class SshCipher

Parameters:

in - input byte[]

start -

output - byte[]

offset -

length -

Throws:

java.io.IOException