Package org.bouncycastle.crypto.engines

Class SkipjackEngine

java.lang.Object

org.bouncycastle.crypto.engines.SkipjackEngine

All Implemented Interfaces:

BlockCipher

public class SkipjackEngine
extends Object
implements BlockCipher

a class that provides a basic SKIPJACK engine.

Constructor Summary

Constructors

Constructor	Description
SkipjackEngine()

Method Summary

Modifier and Type	Method	Description
int	decryptBlock(byte[] in, int inOff, byte[] out, int outOff)
int	encryptBlock(byte[] in, int inOff, byte[] out, int outOff)
String	getAlgorithmName()	Return the name of the algorithm the cipher implements.
int	getBlockSize()	Return the block size for this cipher (in bytes).
void	init(boolean encrypting, CipherParameters params)	initialise a SKIPJACK cipher.
int	processBlock(byte[] in, int inOff, byte[] out, int outOff)	Process one block of input from the array in and write it to the out array.
void	reset()	Reset the cipher.

Methods inherited from class java.lang.Object

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

Constructor Details

SkipjackEngine

public SkipjackEngine()

Method Details

init

public void init(boolean encrypting,
 CipherParameters params)

initialise a SKIPJACK cipher.

Specified by:

init in interface BlockCipher

Parameters:

encrypting - whether or not we are for encryption.

params - the parameters required to set up the cipher.

Throws:

IllegalArgumentException - if the params argument is inappropriate.

getAlgorithmName

public String getAlgorithmName()

Description copied from interface: BlockCipher

Return the name of the algorithm the cipher implements.

Specified by:

getAlgorithmName in interface BlockCipher

Returns:

the name of the algorithm the cipher implements.

getBlockSize

public int getBlockSize()

Description copied from interface: BlockCipher

Return the block size for this cipher (in bytes).

Specified by:

getBlockSize in interface BlockCipher

Returns:

the block size for this cipher in bytes.

processBlock

public int processBlock(byte[] in,
 int inOff,
 byte[] out,
 int outOff)

Description copied from interface: BlockCipher

Process one block of input from the array in and write it to the out array.

Specified by:

processBlock in interface BlockCipher

Parameters:

in - the array containing the input data.

inOff - offset into the in array the data starts at.

out - the array the output data will be copied into.

outOff - the offset into the out array the output will start at.

Returns:

the number of bytes processed and produced.

reset

public void reset()

Description copied from interface: BlockCipher

Reset the cipher. After resetting the cipher is in the same state as it was after the last init (if there was one).

Specified by:

reset in interface BlockCipher

encryptBlock

public int encryptBlock(byte[] in,
 int inOff,
 byte[] out,
 int outOff)

decryptBlock

public int decryptBlock(byte[] in,
 int inOff,
 byte[] out,
 int outOff)