org.bouncycastle.crypto.digests

Class SHA224Digest

Implemented Interfaces:
Digest, ExtendedDigest

public class SHA224Digest
extends GeneralDigest

SHA-224 as described in RFC 3874
         block  word  digest
 SHA-1   512    32    160
 SHA-224 512    32    224
 SHA-256 512    32    256
 SHA-384 1024   64    384
 SHA-512 1024   64    512
 

Constructor Summary

SHA224Digest()
Standard constructor
SHA224Digest(SHA224Digest 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.
protected void
processBlock()
protected void
processLength(long bitLength)
protected void
processWord(byte[] in, int inOff)
void
reset()
reset the chaining variables

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

finish, getByteLength, processBlock, processLength, processWord, reset, update, update

Constructor Details

SHA224Digest

public SHA224Digest()
Standard constructor

SHA224Digest

public SHA224Digest(SHA224Digest 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.

processBlock

protected void processBlock()
Overrides:
processBlock in interface GeneralDigest

processLength

protected void processLength(long bitLength)
Overrides:
processLength in interface GeneralDigest

processWord

protected void processWord(byte[] in,
                           int inOff)
Overrides:
processWord in interface GeneralDigest

reset

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