org.bouncycastle.crypto.engines

Class BlowfishEngine

Implemented Interfaces:
BlockCipher

public final class BlowfishEngine
extends java.lang.Object
implements BlockCipher

A class that provides Blowfish key encryption operations, such as encoding data and generating keys. All the algorithms herein are from Applied Cryptography and implement a simplified cryptography interface.

Constructor Summary

BlowfishEngine()

Method Summary

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 Blowfish 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.

Constructor Details

BlowfishEngine

public BlowfishEngine()

Method Details

getAlgorithmName

public String getAlgorithmName()
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()
Return the block size for this cipher (in bytes).
Specified by:
getBlockSize in interface BlockCipher

Returns:
the block size for this cipher in bytes.


init

public void init(boolean encrypting,
                 CipherParameters params)
initialise a Blowfish 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.


processBlock

public final 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.
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()
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