Top Description Fields Constructors Methods
org.bouncycastle.crypto.engines

public Class Zuc256CoreEngine

extends Zuc128CoreEngine
Class Inheritance
Known Direct Subclasses
org.bouncycastle.crypto.engines.Zuc256Engine, org.bouncycastle.crypto.macs.Zuc256Mac.InternalZuc256Engine
Imports
org.bouncycastle.util.Memoable
Zuc256 implementation. Based on https://www.is.cas.cn/ztzl2016/zouchongzhi/201801/W020180126529970733243.pdf

Field Summary

Modifier and TypeField and Description
private static final byte[]
EK_d

Hides org.bouncycastle.crypto.engines.Zuc128CoreEngine.EK_d.

private static final byte[]
EK_d128

private static final byte[]
EK_d32

private static final byte[]
EK_d64

private byte[]
theD

The selected D constants.

Constructor Summary

AccessConstructor and Description
protected
Zuc256CoreEngine()

Constructor for streamCipher.

protected
Zuc256CoreEngine(final int
the Mac length
pLength)

Constructor for Mac.

protected
Zuc256CoreEngine(final Zuc256CoreEngine
the source engine
pSource)

Constructor for Memoable.

Method Summary

Modifier and TypeMethod and Description
public Memoable

Returns:

the copy
copy()

Overrides org.bouncycastle.crypto.engines.Zuc128CoreEngine.copy.

Implements org.bouncycastle.util.Memoable.copy.

Create a copy of the engine.
public String

Returns:

the name
getAlgorithmName()

Overrides org.bouncycastle.crypto.engines.Zuc128CoreEngine.getAlgorithmName.

Implements org.bouncycastle.crypto.StreamCipher.getAlgorithmName.

Obtain Algorithm Name.
protected int

Returns:

the maximum iterations
getMaxIterations()

Overrides org.bouncycastle.crypto.engines.Zuc128CoreEngine.getMaxIterations.

Obtain Max iterations.
private static int

Returns:

the built integer
MAKEU31(byte
part A
a, byte
part B
b, byte
part C
c, byte
part D
d)

Build a 31-bit integer from constituent parts.

public void
reset(final Memoable
the state to restore
pState)

Overrides org.bouncycastle.crypto.engines.Zuc128CoreEngine.reset.

Implements org.bouncycastle.util.Memoable.reset.

Reset from saved engine state.
protected void
setKeyAndIV(final int[]
the LFSR
pLFSR, final byte[]
the key
k, final byte[]
the iv
iv)

Overrides org.bouncycastle.crypto.engines.Zuc128CoreEngine.setKeyAndIV.

Process key and IV into LFSR.
Inherited from org.bouncycastle.crypto.engines.Zuc128CoreEngine:
encode32beFinitmakeKeyStreamWordprocessBytesresetreturnByteROT

Field Detail

EK_dback to summary
private static final byte[] EK_d

Hides org.bouncycastle.crypto.engines.Zuc128CoreEngine.EK_d.

EK_d128back to summary
private static final byte[] EK_d128
EK_d32back to summary
private static final byte[] EK_d32
EK_d64back to summary
private static final byte[] EK_d64
theDback to summary
private byte[] theD

The selected D constants.

Constructor Detail

Zuc256CoreEngineback to summary
protected Zuc256CoreEngine()

Constructor for streamCipher.

Zuc256CoreEngineback to summary
protected Zuc256CoreEngine(final int pLength)

Constructor for Mac.

Parameters
pLength:int

the Mac length

Zuc256CoreEngineback to summary
protected Zuc256CoreEngine(final Zuc256CoreEngine pSource)

Constructor for Memoable.

Parameters
pSource:Zuc256CoreEngine

the source engine

Method Detail

copyback to summary
public Memoable copy()

Overrides org.bouncycastle.crypto.engines.Zuc128CoreEngine.copy.

Implements org.bouncycastle.util.Memoable.copy.

Create a copy of the engine.

Returns:Memoable

the copy

getAlgorithmNameback to summary
public String getAlgorithmName()

Overrides org.bouncycastle.crypto.engines.Zuc128CoreEngine.getAlgorithmName.

Implements org.bouncycastle.crypto.StreamCipher.getAlgorithmName.

Obtain Algorithm Name.

Returns:String

the name

getMaxIterationsback to summary
protected int getMaxIterations()

Overrides org.bouncycastle.crypto.engines.Zuc128CoreEngine.getMaxIterations.

Obtain Max iterations.

Returns:int

the maximum iterations

MAKEU31back to summary
private static int MAKEU31(byte a, byte b, byte c, byte d)

Build a 31-bit integer from constituent parts.

Parameters
a:byte

part A

b:byte

part B

c:byte

part C

d:byte

part D

Returns:int

the built integer

resetback to summary
public void reset(final Memoable pState)

Overrides org.bouncycastle.crypto.engines.Zuc128CoreEngine.reset.

Implements org.bouncycastle.util.Memoable.reset.

Reset from saved engine state.

Parameters
pState:Memoable

the state to restore

setKeyAndIVback to summary
protected void setKeyAndIV(final int[] pLFSR, final byte[] k, final byte[] iv)

Overrides org.bouncycastle.crypto.engines.Zuc128CoreEngine.setKeyAndIV.

Process key and IV into LFSR.

Parameters
pLFSR:int[]

the LFSR

k:byte[]

the key

iv:byte[]

the iv