iaik.security.lw.ascon

Class AsconMessageDigestSpi

java.lang.Object

java.security.MessageDigestSpi

iaik.security.lw.ascon.AsconMessageDigestSpi

Direct Known Subclasses:

AsconHashASpi, AsconHashSpi

public abstract class AsconMessageDigestSpi
extends MessageDigestSpi

Ascon MessageDigestSpi base class.

Constructor Summary

Constructors

Constructor and Description
AsconMessageDigestSpi()

Method Summary

Modifier and Type	Method and Description
protected byte[]	engineDigest() Finishes the message digest computation.
protected int	engineGetDigestLength() Returns the hash length
protected void	engineReset() Resets this MessageDigest engine.
protected void	engineUpdate(byte input) Processes the given byte.
protected void	engineUpdate(byte[] input, int off, int len) Processes the given number of bytes, supplied in a byte array starting at the given position
abstract String	getVariant() Returns the mode of the hash function (Ascon-Hash, Ascon-Hasha)

Methods inherited from class java.security.MessageDigestSpi

clone, engineDigest, engineUpdate

Methods inherited from class java.lang.Object

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

Constructor Detail

AsconMessageDigestSpi

public AsconMessageDigestSpi()

Method Detail

getVariant

public abstract String getVariant()

Returns the mode of the hash function (Ascon-Hash, Ascon-Hasha)

Returns:

name of the variant

engineUpdate

protected void engineUpdate(byte input)

Processes the given byte.

Specified by:

engineUpdate in class MessageDigestSpi

Parameters:

input - the byte to be processed.

engineGetDigestLength

protected int engineGetDigestLength()

Returns the hash length

Overrides:

engineGetDigestLength in class MessageDigestSpi

Returns:

32 (bytes)

engineUpdate

protected void engineUpdate(byte[] input,
                            int off,
                            int len)

Processes the given number of bytes, supplied in a byte array starting at the given position

Specified by:

engineUpdate in class MessageDigestSpi

Parameters:

input - the byte array holding the data to be processed

off - the offset indicating the start position within the input byte array

len - the number of bytes to be processed

engineDigest

protected byte[] engineDigest()

Finishes the message digest computation.

Specified by:

engineDigest in class MessageDigestSpi

Returns:

the message digest value

engineReset

protected void engineReset()

Resets this MessageDigest engine.

Specified by:

engineReset in class MessageDigestSpi