iaik.security.pq.slhdsa

Class SettingsSLHDSAAlgorithmParameterSpec

java.lang.Object

iaik.security.pq.slhdsa.SettingsSLHDSAAlgorithmParameterSpec

All Implemented Interfaces:

AlgorithmParameterSpec

public class SettingsSLHDSAAlgorithmParameterSpec
extends Object
implements AlgorithmParameterSpec

This class changes the SLH-DSA signing behaviour.

Use useRandomizedSigning(boolean) to use either randomized or deterministic signing. Use setContext(byte[]) to set the context for the sign/verify operation.

         Signature slhdsa = Signature.getInstance("SLHDSA", IaikPq.getInstance());
         slhdsa.setParameter(new SettingsSLHDSAAlgorithmParameterSpec());
         slhdsa.initSign(...);
 

Constructor Summary

Constructors

Constructor and Description
SettingsSLHDSAAlgorithmParameterSpec() Creates a default SettingsSLHDSAAlgorithmParameterspec.
SettingsSLHDSAAlgorithmParameterSpec(boolean randomizedSigning) Creates an SettingsSLHDSAAlgorithmParameterspec specifying if the signature is generated deterministicly or with additional randomness.
SettingsSLHDSAAlgorithmParameterSpec(byte[] context) Creates an SettingsSLHDSAAlgorithmParameterspec using the pre-hashing context.
SettingsSLHDSAAlgorithmParameterSpec(byte[] context, boolean randomizedSigning) Creates an SettingsSLHDSAAlgorithmParameterspec using the pre-hashing context and specifying if the signature is generated deterministicly or with additional randomness.

Method Summary

Modifier and Type	Method and Description
byte[]	getContext() Getter for the currently set context.
boolean	isRandomizedSigning() Getter for current signing mode.
void	setContext(byte[] ctx) Sets the context to be used while signing.
void	useRandomizedSigning(boolean randomizedSigning) Determines if the signature should be randomized or deterministic.

Methods inherited from class java.lang.Object

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

Constructor Detail

SettingsSLHDSAAlgorithmParameterSpec

public SettingsSLHDSAAlgorithmParameterSpec()

Creates a default SettingsSLHDSAAlgorithmParameterspec.

SettingsSLHDSAAlgorithmParameterSpec

public SettingsSLHDSAAlgorithmParameterSpec(byte[] context)
                                     throws PQException

Creates an SettingsSLHDSAAlgorithmParameterspec using the pre-hashing context.

Parameters:

context - pre-hashing context

Throws:

PQException - for an invalid context

SettingsSLHDSAAlgorithmParameterSpec

public SettingsSLHDSAAlgorithmParameterSpec(boolean randomizedSigning)

Creates an SettingsSLHDSAAlgorithmParameterspec specifying if the signature is generated deterministicly or with additional randomness.

Parameters:

randomizedSigning - randomized or deterministic signing

SettingsSLHDSAAlgorithmParameterSpec

public SettingsSLHDSAAlgorithmParameterSpec(byte[] context,
                                            boolean randomizedSigning)
                                     throws PQException

Creates an SettingsSLHDSAAlgorithmParameterspec using the pre-hashing context and specifying if the signature is generated deterministicly or with additional randomness.

Parameters:

context - pre-hashing context

randomizedSigning - randomized or deterministic signing

Throws:

PQException - for an invalid context

Method Detail

setContext

public void setContext(byte[] ctx)
                throws PQException

Sets the context to be used while signing.

Parameters:

ctx - context with a maximum of 255 bytes

Throws:

PQException

getContext

public byte[] getContext()

Getter for the currently set context. Returns null if context is not set.

Returns:

context

useRandomizedSigning

public void useRandomizedSigning(boolean randomizedSigning)

Determines if the signature should be randomized or deterministic. The default is randomized.

Parameters:

randomizedSigning - randomized or deterministic signing

isRandomizedSigning

public boolean isRandomizedSigning()

Getter for current signing mode. True means randomized signing, false means deterministic signing.

Returns:

randomized signing mode