Package org.bouncycastle.crypto.fpe

Class FPEFF1Engine

java.lang.Object

org.bouncycastle.crypto.fpe.FPEEngine

org.bouncycastle.crypto.fpe.FPEFF1Engine

public class FPEFF1Engine
extends FPEEngine

NIST SP 800-38G, FF1 format preserving encryption.

Field Summary

Fields inherited from class org.bouncycastle.crypto.fpe.FPEEngine

baseCipher, forEncryption, fpeParameters

Constructor Summary

Constructors

Constructor	Description
FPEFF1Engine()	Base constructor - the engine will use AES.
FPEFF1Engine(BlockCipher baseCipher)	Build the engine using the specified 128 bit block cipher.

Method Summary

Modifier and Type	Method	Description
protected int	decryptBlock(byte[] inBuf, int inOff, int length, byte[] outBuf, int outOff)
protected int	encryptBlock(byte[] inBuf, int inOff, int length, byte[] outBuf, int outOff)
String	getAlgorithmName()	Return the name of the algorithm the cipher implements.
void	init(boolean forEncryption, CipherParameters parameters)	Initialize the FPE engine for encryption/decryption.

Methods inherited from class org.bouncycastle.crypto.fpe.FPEEngine

processBlock, toByteArray, toShortArray

Methods inherited from class java.lang.Object

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

Constructor Details

FPEFF1Engine

public FPEFF1Engine()

Base constructor - the engine will use AES.

FPEFF1Engine

public FPEFF1Engine(BlockCipher baseCipher)

Build the engine using the specified 128 bit block cipher.

Parameters:

baseCipher - cipher to base the FPE algorithm on.

Method Details

init

public void init(boolean forEncryption,
 CipherParameters parameters)

Description copied from class: FPEEngine

Initialize the FPE engine for encryption/decryption.

Specified by:

init in class FPEEngine

Parameters:

forEncryption - true if initialising for encryption, false otherwise.

parameters - the key and other parameters to use to set the engine up.

getAlgorithmName

public String getAlgorithmName()

Description copied from class: FPEEngine

Return the name of the algorithm the cipher implements.

Specified by:

getAlgorithmName in class FPEEngine

Returns:

the name of the algorithm the cipher implements.

encryptBlock

protected int encryptBlock(byte[] inBuf,
 int inOff,
 int length,
 byte[] outBuf,
 int outOff)

Specified by:

encryptBlock in class FPEEngine

decryptBlock

protected int decryptBlock(byte[] inBuf,
 int inOff,
 int length,
 byte[] outBuf,
 int outOff)

Specified by:

decryptBlock in class FPEEngine