org.exoplatform.addon.ethereum.wallet.fork

Class KeccakDigest

java.lang.Object

org.exoplatform.addon.ethereum.wallet.fork.KeccakDigest

All Implemented Interfaces:

org.bouncycastle.crypto.Digest, org.bouncycastle.crypto.ExtendedDigest

public class KeccakDigest
extends Object
implements org.bouncycastle.crypto.ExtendedDigest

implementation of Keccak based on following KeccakNISTInterface.c from http://keccak.noekeon.org/

Following the naming conventions used in the C source code to enable easy review of the implementation.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	bitsAvailableForSqueezing
protected int	bitsInQueue
protected byte[]	chunk
protected byte[]	dataQueue
protected int	fixedOutputLength
protected byte[]	oneByte
protected int	rate
protected boolean	squeezing
protected byte[]	state

Constructor Summary

Constructors

Constructor and Description
KeccakDigest()
KeccakDigest(int bitLength)
KeccakDigest(KeccakDigest source)

Method Summary

Modifier and Type	Method and Description
protected void	absorb(byte[] data, int off, long databitlen)
int	doFinal(byte[] out, int outOff)
protected int	doFinal(byte[] out, int outOff, byte partialByte, int partialBits)
String	getAlgorithmName()
int	getByteLength() Return the size of block that the compression function is applied to in bytes.
int	getDigestSize()
void	reset()
protected void	squeeze(byte[] output, int offset, long outputLength)
void	update(byte in)
void	update(byte[] in, int inOff, int len)

Methods inherited from class java.lang.Object

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

Field Detail

state

protected byte[] state

dataQueue

protected byte[] dataQueue

rate

protected int rate

bitsInQueue

protected int bitsInQueue

fixedOutputLength

protected int fixedOutputLength

squeezing

protected boolean squeezing

bitsAvailableForSqueezing

protected int bitsAvailableForSqueezing

chunk

protected byte[] chunk

oneByte

protected byte[] oneByte

Constructor Detail

KeccakDigest

public KeccakDigest()

KeccakDigest

public KeccakDigest(int bitLength)

KeccakDigest

public KeccakDigest(KeccakDigest source)

Method Detail

getAlgorithmName

public String getAlgorithmName()

Specified by:

getAlgorithmName in interface org.bouncycastle.crypto.Digest

getDigestSize

public int getDigestSize()

Specified by:

getDigestSize in interface org.bouncycastle.crypto.Digest

update

public void update(byte in)

Specified by:

update in interface org.bouncycastle.crypto.Digest

update

public void update(byte[] in,
                   int inOff,
                   int len)

Specified by:

update in interface org.bouncycastle.crypto.Digest

doFinal

public int doFinal(byte[] out,
                   int outOff)

Specified by:

doFinal in interface org.bouncycastle.crypto.Digest

doFinal

protected int doFinal(byte[] out,
                      int outOff,
                      byte partialByte,
                      int partialBits)

reset

public void reset()

Specified by:

reset in interface org.bouncycastle.crypto.Digest

getByteLength

public int getByteLength()

Return the size of block that the compression function is applied to in bytes.

Specified by:

getByteLength in interface org.bouncycastle.crypto.ExtendedDigest

Returns:

internal byte length of a block.

absorb

protected void absorb(byte[] data,
                      int off,
                      long databitlen)

squeeze

protected void squeeze(byte[] output,
                       int offset,
                       long outputLength)