com.jn.langx.security.crypto.digest.internal.impl

类 _KeccakDigest

java.lang.Object

com.jn.langx.security.crypto.digest.internal.impl._KeccakDigest

所有已实现的接口:

Digest

直接已知子类:

_SHA3Digest

public class _KeccakDigest
extends Object
implements Digest

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.

字段概要

字段

限定符和类型	字段和说明
protected int	bitsInQueue
protected byte[]	dataQueue
protected int	fixedOutputLength
protected int	rate
protected boolean	squeezing
protected long[]	state

构造器概要

构造器

构造器和说明
_KeccakDigest(_KeccakDigest source)
_KeccakDigest()
_KeccakDigest(int bitLength)

方法概要

限定符和类型	方法和说明
protected void	absorb(byte[] data, int off, int len)
protected void	absorbBits(int data, int bits)
int	doFinal(byte[] out, int outOff) close the digest, producing the final digest value.
protected int	doFinal(byte[] out, int outOff, byte partialByte, int partialBits)
String	getAlgorithmName() return the algorithm name
int	getBufferSize() Return the size of block that the compression function is applied to in bytes.
int	getDigestSize() return the size, in bytes, of the digest produced by this message digest.
void	reset() reset the digest back to it's initial state.
protected void	squeeze(byte[] output, int offset, long outputLength)
void	update(byte in) update the message digest with a single byte.
void	update(byte[] in, int inOff, int len) update the message digest with a block of bytes.

从类继承的方法 java.lang.Object

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

字段详细资料

state

protected long[] state

dataQueue

protected byte[] dataQueue

rate

protected int rate

bitsInQueue

protected int bitsInQueue

fixedOutputLength

protected int fixedOutputLength

squeezing

protected boolean squeezing

构造器详细资料

_KeccakDigest

public _KeccakDigest()

_KeccakDigest

public _KeccakDigest(int bitLength)

_KeccakDigest

public _KeccakDigest(_KeccakDigest source)

方法详细资料

getAlgorithmName

public String getAlgorithmName()

从接口复制的说明: Digest

return the algorithm name

指定者:

getAlgorithmName 在接口中 Digest

返回:

the algorithm name

getDigestSize

public int getDigestSize()

从接口复制的说明: Digest

return the size, in bytes, of the digest produced by this message digest.

指定者:

getDigestSize 在接口中 Digest

返回:

the size, in bytes, of the digest produced by this message digest.

update

public void update(byte in)

从接口复制的说明: Digest

update the message digest with a single byte.

指定者:

update 在接口中 Digest

参数:

in - the input byte to be entered.

update

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

从接口复制的说明: Digest

update the message digest with a block of bytes.

指定者:

update 在接口中 Digest

参数:

in - the byte array containing the data.

inOff - the offset into the byte array where the data starts.

len - the length of the data.

doFinal

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

从接口复制的说明: Digest

close the digest, producing the final digest value. The doFinal call leaves the digest reset.

指定者:

doFinal 在接口中 Digest

参数:

out - the array the digest is to be copied into.

outOff - the offset into the out array the digest is to start at.

doFinal

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

reset

public void reset()

从接口复制的说明: Digest

reset the digest back to it's initial state.

指定者:

reset 在接口中 Digest

getBufferSize

public int getBufferSize()

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

指定者:

getBufferSize 在接口中 Digest

返回:

internal byte length of a block.

absorb

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

absorbBits

protected void absorbBits(int data,
                          int bits)

squeeze

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