de.flexiprovider.nf.iq.iqdsa
Class IQDSAParameterGenerator

java.lang.Object
  |
  +--java.security.AlgorithmParameterGeneratorSpi
        |
        +--de.flexiprovider.api.parameters.AlgorithmParameterGenerator
              |
              +--de.flexiprovider.nf.iq.iqdsa.IQDSAParameterGenerator

public class IQDSAParameterGenerator

extends AlgorithmParameterGenerator

This class is used to generate parameters for the IQDSA signature algorithm.

Author:

Martin Döring

Constructor Summary

IQDSAParameterGenerator()

Method Summary

AlgorithmParameterSpec	generateParameters() Generate IQDSA algorithm parameters.
protected AlgorithmParameters	getAlgorithmParameters()
void	init(AlgorithmParameterSpec genParams, SecureRandom random) Initialize the parameter generator with parameters (supposed to be an instance of IQDSAParamGenParameterSpec) and a source of randomness.
void	init(int size, SecureRandom random) Initialize the parameter generator with the bit length of the discriminant and a source of randomness.

Methods inherited from class de.flexiprovider.api.parameters.AlgorithmParameterGenerator

engineGenerateParameters, engineInit, engineInit

Methods inherited from class java.lang.Object

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

Constructor Detail

IQDSAParameterGenerator

public IQDSAParameterGenerator()

Method Detail

getAlgorithmParameters

protected AlgorithmParameters getAlgorithmParameters()

Overrides:

getAlgorithmParameters in class AlgorithmParameterGenerator

Returns:

an instance of the AlgorithmParameters class corresponding to the generated parameters

init

public void init(AlgorithmParameterSpec genParams,
                 SecureRandom random)
          throws InvalidAlgorithmParameterException

Initialize the parameter generator with parameters (supposed to be an instance of IQDSAParamGenParameterSpec) and a source of randomness. If the parameters are null, the default parameters are used.

Overrides:

init in class AlgorithmParameterGenerator

Parameters:

genParams - the parameters

random - the source of randomness

Throws:

InvalidAlgorithmParameterException - if the parameters are not an instance of IQDSAParamGenParameterSpec.

init

public void init(int size,
                 SecureRandom random)

Initialize the parameter generator with the bit length of the discriminant and a source of randomness.

If the bit length of the discriminant is < 2, the default size is used as bit length. If the bit length is > IQDSAParamGenParameterSpec.MAX_SIZE, IQDSAParamGenParameterSpec.MAX_SIZE is used as bit length.

Overrides:

init in class AlgorithmParameterGenerator

Parameters:

size - the bit length of the discriminant (>= 2, <= IQDSAParamGenParameterSpec.MAX_SIZE)

random - the source of randomness

generateParameters

public AlgorithmParameterSpec generateParameters()

Generate IQDSA algorithm parameters.

Overrides:

generateParameters in class AlgorithmParameterGenerator

Returns:

the generated IQDSA parameters

See Also:

IQDSAParameterSpec