org.bouncycastle.crypto.digests

Class SHA512Digest

Implemented Interfaces:
Digest

public class SHA512Digest
extends LongDigest

FIPS 180-2 implementation of SHA-512.
         block  word  digest
 SHA-1   512    32    160
 SHA-256 512    32    256
 SHA-384 1024   64    384
 SHA-512 1024   64    512
 

Field Summary

Fields inherited from class org.bouncycastle.crypto.digests.LongDigest

H1, H2, H3, H4, H5, H6, H7, H8

Constructor Summary

SHA512Digest()
Standard constructor
SHA512Digest(SHA512Digest t)
Copy constructor.

Method Summary

int
doFinal(byte[] out, int outOff)
close the digest, producing the final digest value.
String
getAlgorithmName()
return the algorithm name
int
getDigestSize()
return the size, in bytes, of the digest produced by this message digest.
void
reset()
reset the chaining variables

Methods inherited from class org.bouncycastle.crypto.digests.LongDigest

finish, processBlock, processLength, processWord, reset, unpackWord, update, update

Constructor Details

SHA512Digest

public SHA512Digest()
Standard constructor


SHA512Digest

public SHA512Digest(SHA512Digest t)
Copy constructor. This will copy the state of the provided message digest.

Method Details

doFinal

public int doFinal(byte[] out,
                   int outOff)
close the digest, producing the final digest value. The doFinal call leaves the digest reset.
Specified by:
doFinal in interface Digest

Parameters:
out - the array the digest is to be copied into.
outOff - the offset into the out array the digest is to start at.


getAlgorithmName

public String getAlgorithmName()
return the algorithm name
Specified by:
getAlgorithmName in interface Digest

Returns:
the algorithm name


getDigestSize

public int getDigestSize()
return the size, in bytes, of the digest produced by this message digest.
Specified by:
getDigestSize in interface Digest

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


reset

public void reset()
reset the chaining variables
Specified by:
reset in interface Digest
Overrides:
reset in interface LongDigest