org.gudy.bouncycastle.crypto.digests
Class LongDigest

java.lang.Object
  org.gudy.bouncycastle.crypto.digests.LongDigest

All Implemented Interfaces:

Digest

Direct Known Subclasses:

SHA384Digest, SHA512Digest

public abstract class LongDigest
extends Object
implements Digest

Base class for SHA-384 and SHA-512.

Field Summary

protected long	H1
protected long	H2
protected long	H3
protected long	H4
protected long	H5
protected long	H6
protected long	H7
protected long	H8

Constructor Summary

protected	LongDigest() Constructor for variable length word
protected	LongDigest(LongDigest t) Copy constructor.

Method Summary

void	finish()
protected void	processBlock()
protected void	processLength(long lowW, long hiW)
protected void	processWord(byte[] in, int inOff)
void	reset() reset the digest back to it's initial state.
protected void	unpackWord(long word, byte[] out, int outOff)
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.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.gudy.bouncycastle.crypto.Digest

doFinal, getAlgorithmName, getDigestSize

Field Detail

H1

protected long H1

H2

protected long H2

H3

protected long H3

H4

protected long H4

H5

protected long H5

H6

protected long H6

H7

protected long H7

H8

protected long H8

Constructor Detail

LongDigest

protected LongDigest()

Constructor for variable length word

LongDigest

protected LongDigest(LongDigest t)

Copy constructor. We are using copy constructors in place of the Object.clone() interface as this interface is not supported by J2ME.

Method Detail

update

public void update(byte in)

Description copied from interface: Digest

update the message digest with a single byte.

Specified by:

update in interface Digest

Parameters:

in - the input byte to be entered.

update

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

Description copied from interface: Digest

update the message digest with a block of bytes.

Specified by:

update in interface Digest

Parameters:

in - the byte array containing the data.

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

len - the length of the data.

finish

public void finish()

reset

public void reset()

Description copied from interface: Digest

reset the digest back to it's initial state.

Specified by:

reset in interface Digest

processWord

protected void processWord(byte[] in,
                           int inOff)

unpackWord

protected void unpackWord(long word,
                          byte[] out,
                          int outOff)

processLength

protected void processLength(long lowW,
                             long hiW)

processBlock

protected void processBlock()