org.bouncycastle.crypto.digests

Class SHA3Digest

java.lang.Object

org.bouncycastle.crypto.digests.KeccakDigest

org.bouncycastle.crypto.digests.SHA3Digest

All Implemented Interfaces:

Digest, ExtendedDigest

public class SHA3Digest
extends KeccakDigest

implementation of SHA-3 based on following KeccakNISTInterface.c from https://keccak.noekeon.org/

Following the naming conventions used in the C source code to enable easy review of the implementation.

Field Summary

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

bitsInQueue, dataQueue, fixedOutputLength, purpose, rate, squeezing, state

Constructor Summary

Constructors

Constructor and Description
SHA3Digest()
SHA3Digest(CryptoServicePurpose purpose)
SHA3Digest(int bitLength)
SHA3Digest(int bitLength, CryptoServicePurpose purpose)
SHA3Digest(SHA3Digest source)

Method Summary

Modifier and Type	Method and Description
int	doFinal(byte[] out, int outOff) close the digest, producing the final digest value.
protected int	doFinal(byte[] out, int outOff, byte partialByte, int partialBits)
java.lang.String	getAlgorithmName() return the algorithm name

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

absorb, absorb, absorbBits, cryptoServiceProperties, getByteLength, getDigestSize, reset, squeeze, update, update

Methods inherited from class java.lang.Object

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

Constructor Detail

SHA3Digest

public SHA3Digest()

SHA3Digest

public SHA3Digest(CryptoServicePurpose purpose)

SHA3Digest

public SHA3Digest(int bitLength)

SHA3Digest

public SHA3Digest(int bitLength,
                  CryptoServicePurpose purpose)

SHA3Digest

public SHA3Digest(SHA3Digest source)

Method Detail

getAlgorithmName

public java.lang.String getAlgorithmName()

Description copied from interface: Digest

return the algorithm name

Specified by:

getAlgorithmName in interface Digest

Overrides:

getAlgorithmName in class KeccakDigest

Returns:

the algorithm name

doFinal

public int doFinal(byte[] out,
                   int outOff)

Description copied from interface: Digest

close the digest, producing the final digest value. The doFinal call leaves the digest reset.

Specified by:

doFinal in interface Digest

Overrides:

doFinal in class KeccakDigest

Parameters:

out - the array the digest is to be copied into.

outOff - the offset into the out array the digest is to start at.

doFinal

protected int doFinal(byte[] out,
                      int outOff,
                      byte partialByte,
                      int partialBits)

Overrides:

doFinal in class KeccakDigest