de.flexiprovider.nf.iq.iqrdsa
Class IQRDSAParameterGenerator

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

public class IQRDSAParameterGenerator

extends AlgorithmParameterGenerator

This class implements the IQRDSAAlgorithmParameterGenerator.

The default bit length of the discriminant of the class group is 768 bits.

Author:

Martin Döring

Constructor Summary

IQRDSAParameterGenerator()

Method Summary

AlgorithmParameterSpec	generateParameters() Generate IQRDSA algorithm parameters.
protected AlgorithmParameters	getAlgorithmParameters()
void	init(AlgorithmParameterSpec genParams, SecureRandom random) Initialize the parameter generator with parameters and a source of randomness.
void	init(int size, SecureRandom random) Initialize the parameter generator with the size of the prime p 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

IQRDSAParameterGenerator

public IQRDSAParameterGenerator()

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 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 IQRDSAParamGenParameterSpec.

init

public void init(int size,
                 SecureRandom random)

Initialize the parameter generator with the size of the prime p and a source of randomness.

If the bit length of the discriminant is < 2, the IQRDSAParamGenParameterSpec.DEFAULT_SIZE is used as bit length. If the bit length is > IQRDSAParamGenParameterSpec.MAX_SIZE, IQRDSAParamGenParameterSpec.MAX_SIZE is used as bit length.

Overrides:

init in class AlgorithmParameterGenerator

Parameters:

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

random - the source of randomness

generateParameters

public AlgorithmParameterSpec generateParameters()

Generate IQRDSA algorithm parameters.

Overrides:

generateParameters in class AlgorithmParameterGenerator

Returns:

the generated IQRDSA parameters

See Also:

IQRDSAParameterSpec