edu.vt.middleware.crypt.digest
Class SHA256

java.lang.Object
  edu.vt.middleware.crypt.AbstractAlgorithm
      edu.vt.middleware.crypt.AbstractRandomizableAlgorithm
          edu.vt.middleware.crypt.digest.DigestAlgorithm
              edu.vt.middleware.crypt.digest.SHA256

All Implemented Interfaces:

Algorithm, Randomizable

public class SHA256
extends DigestAlgorithm

SHA256 contains functions for hashing data using the SHA-256 algorithm. This algorithm outputs a 256 bit hash.

Version:

$Revision: 3 $

Author:

Middleware Services

Field Summary

Fields inherited from class edu.vt.middleware.crypt.digest.DigestAlgorithm

CHUNK_SIZE, digest, salt

Fields inherited from class edu.vt.middleware.crypt.AbstractRandomizableAlgorithm

randomByteSize

Fields inherited from class edu.vt.middleware.crypt.AbstractAlgorithm

algorithm, logger, randomProvider

Constructor Summary

SHA256()
Creates an uninitialized instance of an SHA256 digest.

SHA256(boolean randomize)
Creates a new SHA256 digest that may optionally be initialized with random data.

SHA256(byte[] salt)
Creates a new SHA256 digest and initializes it with the given salt.

Method Summary

Methods inherited from class edu.vt.middleware.crypt.digest.DigestAlgorithm

digest, digest, digest, digest, getDigest, getRandomSalt, newInstance, setDigest, setSalt

Methods inherited from class edu.vt.middleware.crypt.AbstractRandomizableAlgorithm

getRandomByteSize, setRandomByteSize

Methods inherited from class edu.vt.middleware.crypt.AbstractAlgorithm

getAlgorithm, getRandomData, setRandomProvider, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

SHA256

public SHA256()

Creates an uninitialized instance of an SHA256 digest.

SHA256

public SHA256(boolean randomize)

Creates a new SHA256 digest that may optionally be initialized with random data.

Parameters:

randomize - True to randomize initial state of digest, false otherwise.

SHA256

public SHA256(byte[] salt)

Creates a new SHA256 digest and initializes it with the given salt.

Parameters:

salt - Salt data used to initialize digest computation.