Package org.bouncycastle.crypto.engines

Class Zuc256CoreEngine

java.lang.Object

org.bouncycastle.crypto.engines.Zuc128CoreEngine

org.bouncycastle.crypto.engines.Zuc256CoreEngine

All Implemented Interfaces:

StreamCipher, Memoable

Direct Known Subclasses:

Zuc256Engine

public class Zuc256CoreEngine
extends Zuc128CoreEngine

Zuc256 implementation. Based on https://www.is.cas.cn/ztzl2016/zouchongzhi/201801/W020180126529970733243.pdf

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Zuc256CoreEngine()	Constructor for streamCipher.
protected	Zuc256CoreEngine(int pLength)	Constructor for Mac.
protected	Zuc256CoreEngine(Zuc256CoreEngine pSource)	Constructor for Memoable.

Method Summary

Modifier and Type	Method	Description
Memoable	copy()	Create a copy of the engine.
String	getAlgorithmName()	Obtain Algorithm Name.
protected int	getMaxIterations()	Obtain Max iterations.
void	reset(Memoable pState)	Reset from saved engine state.
protected void	setKeyAndIV(int[] pLFSR, byte[] k, byte[] iv)	Process key and IV into LFSR.

Methods inherited from class org.bouncycastle.crypto.engines.Zuc128CoreEngine

encode32be, init, makeKeyStreamWord, processBytes, reset, returnByte

Methods inherited from class java.lang.Object

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

Constructor Details

Zuc256CoreEngine

protected Zuc256CoreEngine()

Constructor for streamCipher.

Zuc256CoreEngine

protected Zuc256CoreEngine(int pLength)

Constructor for Mac.

Parameters:

pLength - the Mac length

Zuc256CoreEngine

protected Zuc256CoreEngine(Zuc256CoreEngine pSource)

Constructor for Memoable.

Parameters:

pSource - the source engine

Method Details

getMaxIterations

protected int getMaxIterations()

Obtain Max iterations.

Overrides:

getMaxIterations in class Zuc128CoreEngine

Returns:

the maximum iterations

getAlgorithmName

public String getAlgorithmName()

Obtain Algorithm Name.

Specified by:

getAlgorithmName in interface StreamCipher

Overrides:

getAlgorithmName in class Zuc128CoreEngine

Returns:

the name

setKeyAndIV

protected void setKeyAndIV(int[] pLFSR,
 byte[] k,
 byte[] iv)

Process key and IV into LFSR.

Overrides:

setKeyAndIV in class Zuc128CoreEngine

Parameters:

pLFSR - the LFSR

k - the key

iv - the iv

copy

public Memoable copy()

Create a copy of the engine.

Specified by:

copy in interface Memoable

Overrides:

copy in class Zuc128CoreEngine

Returns:

the copy

reset

public void reset(Memoable pState)

Reset from saved engine state.

Specified by:

reset in interface Memoable

Overrides:

reset in class Zuc128CoreEngine

Parameters:

pState - the state to restore