de.flexiprovider.core.md.swifftx
Class SWIFFTX512

java.lang.Object
  |
  +--java.security.MessageDigestSpi
        |
        +--de.flexiprovider.api.MessageDigest
              |
              +--de.flexiprovider.core.md.swifftx.SWIFFTX512

public class SWIFFTX512

extends MessageDigest

This class implements the SWIFFTX512 hash function. It is designed by Yuriy Arbitman, Gil Dogon, Vadim Lyubashevsky, Daniele Micciancio, Chris Peikert, and Alon Rosen. It is a candidate for the SHA-3 competition. The specification of the algorithm can be found at . The implementation is a direct translation from the reference C implementation.

Author:

Stephan Mönkehues

Field Summary

static java.lang.String

ALG_NAME The algorithm name.

Constructor Summary

SWIFFTX512()
Default constructor.

Method Summary

byte[]	digest() Hashes the input.
int	getDigestLength() Returns the number of bytes of the output of the SWIFFTX224 hash function.
void	reset() Resets this hash function for clearing any internal stages.
void	update(byte input) Update the digest using the specified byte.
void	update(byte[] input, int offset, int len) Update the digest using the specified array of bytes, starting at the specified offset.

Methods inherited from class de.flexiprovider.api.MessageDigest

digest, digest, engineDigest, engineGetDigestLength, engineReset, engineUpdate, engineUpdate, update

Methods inherited from class java.security.MessageDigestSpi

clone, engineDigest

Methods inherited from class java.lang.Object

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

Field Detail

ALG_NAME

public static final java.lang.String ALG_NAME

The algorithm name.

Constructor Detail

SWIFFTX512

public SWIFFTX512()

Default constructor.

Method Detail

digest

public byte[] digest()

Hashes the input.

Overrides:

digest in class MessageDigest

Returns:

the digested data

reset

public void reset()

Resets this hash function for clearing any internal stages.

Overrides:

reset in class MessageDigest

getDigestLength

public int getDigestLength()

Returns the number of bytes of the output of the SWIFFTX224 hash function. This is 64.

Overrides:

getDigestLength in class MessageDigest

Returns:

the number of bytes of the output of the SWIFFTX224 hash function which is 64.

update

public void update(byte input)

Update the digest using the specified byte.

Overrides:

update in class MessageDigest

Parameters:

input - the byte to use for the update

update

public void update(byte[] input,
                   int offset,
                   int len)

Update the digest using the specified array of bytes, starting at the specified offset.

Overrides:

update in class MessageDigest

Parameters:

input - the array of bytes to use for the update

offset - the offset to start from in the array of bytes

len - the number of bytes to use, starting at offset