org.jboss.security.negotiation.cipher

Class DesCbcDecoder

java.lang.Object

org.jboss.security.negotiation.cipher.Decoder

org.jboss.security.negotiation.cipher.DesCbcDecoder

Direct Known Subclasses:

DesCbcCrcDecoder, DesCbcMd5Decoder

public abstract class DesCbcDecoder
extends Decoder

Common methods for the DesCbc types.

Version:

$Revision: 1 $

Author:

Marcus Moyses

Constructor Summary

Constructors

Constructor and Description
DesCbcDecoder()

Method Summary

Methods

Modifier and Type	Method and Description
int	blockSize()
protected abstract byte[]	calculateChecksum(byte[] data, int size)
static void	cbc_encrypt(byte[] input, byte[] output, byte[] key, byte[] ivec, boolean encrypt)
int	confounderSize()
byte[]	decrypt(byte[] cipher, byte[] key, byte[] ivec, int usage)
byte[]	decrypt(byte[] cipher, byte[] key, int usage)
protected boolean	isChecksumValid(byte[] data)
int	keySize()

Methods inherited from class org.jboss.security.negotiation.cipher.Decoder

checksumSize, dataSize, decryptedData, getInstace, startOfChecksum, startOfData

Methods inherited from class java.lang.Object

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

Constructor Detail

DesCbcDecoder

public DesCbcDecoder()

Method Detail

calculateChecksum

protected abstract byte[] calculateChecksum(byte[] data,
                       int size)
                                     throws NegotiationException

Throws:

NegotiationException

blockSize

public int blockSize()

Specified by:

blockSize in class Decoder

keySize

public int keySize()

Specified by:

keySize in class Decoder

confounderSize

public int confounderSize()

Specified by:

confounderSize in class Decoder

decrypt

public byte[] decrypt(byte[] cipher,
             byte[] key,
             int usage)
               throws NegotiationException

Specified by:

decrypt in class Decoder

Throws:

NegotiationException

decrypt

public byte[] decrypt(byte[] cipher,
             byte[] key,
             byte[] ivec,
             int usage)
               throws NegotiationException

Throws:

NegotiationException

isChecksumValid

protected boolean isChecksumValid(byte[] data)
                           throws NegotiationException

Throws:

NegotiationException

cbc_encrypt

public static void cbc_encrypt(byte[] input,
               byte[] output,
               byte[] key,
               byte[] ivec,
               boolean encrypt)
                        throws NegotiationException

Throws:

NegotiationException