com.maverick.ssh.components.jce

Class Ssh1Des3

java.lang.Object

com.maverick.ssh.components.SshCipher

com.maverick.ssh.components.jce.Ssh1Des3

All Implemented Interfaces:

SshComponent, SecureComponent

public class Ssh1Des3
extends SshCipher

3DES cipher implementation for SSH1 protocol.

Author:

Lee David Painter

Field Summary

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

DECRYPT_MODE, ENCRYPT_MODE

Constructor Summary

Constructors

Constructor and Description
Ssh1Des3()

Method Summary

Modifier and Type	Method and Description
String	getAlgorithm()
int	getBlockSize() Get the cipher block size.
int	getKeyLength() Return the key length required
String	getProviderName()
void	init(int mode, byte[] iv, byte[] keydata) Initialize the cipher with up to 40 bytes of iv and key data.
void	transform(byte[] src, int start, byte[] dest, 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

getMacLength, getPriority, getSecurityLevel, isMAC, transform

Methods inherited from class java.lang.Object

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

Constructor Detail

Ssh1Des3

public Ssh1Des3()
         throws IOException

Throws:

IOException

Method Detail

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.

getAlgorithm

public String getAlgorithm()

Specified by:

getAlgorithm in interface SshComponent

Specified by:

getAlgorithm in interface SecureComponent

Overrides:

getAlgorithm in class SshCipher

init

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

IOException

getKeyLength

public int getKeyLength()

Description copied from class: SshCipher

Return the key length required

Specified by:

getKeyLength in class SshCipher

Returns:

transform

public void transform(byte[] src,
                      int start,
                      byte[] dest,
                      int offset,
                      int len)
               throws 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

Throws:

IOException

getProviderName

public String getProviderName()

Specified by:

getProviderName in class SshCipher