org.bouncycastle.crypto.digests

Class SHA256Digest

Implemented Interfaces:
Digest

public class SHA256Digest
extends GeneralDigest

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

Constructor Summary

SHA256Digest()
Standard constructor
SHA256Digest(SHA256Digest t)
Copy constructor.

Method Summary

int
doFinal(byte[] out, int outOff)
String
getAlgorithmName()
int
getDigestSize()
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, processBlock, processLength, processWord, reset, update, update

Constructor Details

SHA256Digest

public SHA256Digest()
Standard constructor


SHA256Digest

public SHA256Digest(SHA256Digest t)
Copy constructor. This will copy the state of the provided message digest.

Method Details

doFinal

public int doFinal(byte[] out,
                   int outOff)
Specified by:
doFinal in interface Digest


getAlgorithmName

public String getAlgorithmName()
Specified by:
getAlgorithmName in interface Digest


getDigestSize

public int getDigestSize()
Specified by:
getDigestSize in interface 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