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

类 _MD2Digest

java.lang.Object

com.jn.langx.security.crypto.digest.internal.impl._MD2Digest

所有已实现的接口:

Digest, Memoable

public class _MD2Digest
extends Object
implements Digest, Memoable

implementation of MD2 as outlined in RFC1319 by B.Kaliski from RSA Laboratories April 1992

构造器概要

构造器

构造器和说明
_MD2Digest(_MD2Digest t)
_MD2Digest()

方法概要

限定符和类型	方法和说明
Memoable	copy() Produce a copy of this object with its configuration and in its current state.
int	doFinal(byte[] out, int outOff) close the digest, producing the final digest value.
String	getAlgorithmName() return the algorithm name
int	getBufferSize() Return the size in bytes of the internal buffer the digest applies it's compression function to.
int	getDigestSize() return the size, in bytes, of the digest produced by this message digest.
protected void	processBlock(byte[] m)
protected void	processCheckSum(byte[] m)
void	reset() reset the digest back to it's initial state.
void	reset(Memoable other) Restore a copied object state into this object.
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

构造器详细资料

_MD2Digest

public _MD2Digest()

_MD2Digest

public _MD2Digest(_MD2Digest t)

方法详细资料

getAlgorithmName

public String getAlgorithmName()

return the algorithm name

指定者:

getAlgorithmName 在接口中 Digest

返回:

the algorithm name

getDigestSize

public int getDigestSize()

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.

doFinal

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

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.

reset

public void reset()

reset the digest back to it's initial state.

指定者:

reset 在接口中 Digest

update

public void update(byte in)

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)

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.

processCheckSum

protected void processCheckSum(byte[] m)

processBlock

protected void processBlock(byte[] m)

getBufferSize

public int getBufferSize()

从接口复制的说明: Digest

Return the size in bytes of the internal buffer the digest applies it's compression function to.

指定者:

getBufferSize 在接口中 Digest

返回:

byte length of the digests internal buffer.

copy

public Memoable copy()

从接口复制的说明: Memoable

Produce a copy of this object with its configuration and in its current state.

The returned object may be used simply to store the state, or may be used as a similar object starting from the copied state.

指定者:

copy 在接口中 Memoable

reset

public void reset(Memoable other)

从接口复制的说明: Memoable

Restore a copied object state into this object.

Implementations of this method should try to avoid or minimise memory allocation to perform the reset.

指定者:

reset 在接口中 Memoable

参数:

other - an object originally copied from an object of the same type as this instance.