de.fhg.igd.crypto
Class PBEParameterGenerator

java.lang.Object
  java.security.AlgorithmParameterGeneratorSpi
      de.fhg.igd.crypto.PBEParameterGenerator

public class PBEParameterGenerator
extends AlgorithmParameterGeneratorSpi

This class generates parameters for PBE according to PKCS#5. Encoding and Decoding conforms to ASN.1/DER as set forth in said standard. The PBEParameterSpec and subclasses thereof are supported for initialising the parameters.

Version:

"$Id: PBEParameterGenerator.java 1913 2007-08-08 02:41:53Z jpeters $"

Author:

Volker Roth

See Also:

PBEParameters, AlgorithmParameterSpec

Field Summary

protected SecureRandom	rnd_ The source of randomness used to generate IVs.
protected int	size_ The iteration count.

Constructor Summary

PBEParameterGenerator()

Method Summary

protected AlgorithmParameters	engineGenerateParameters() Generates the parameters.
protected void	engineInit(AlgorithmParameterSpec paramSpec, SecureRandom random) Initializes this parameter generator with a set of algorithm-specific parameter generation values.
protected void	engineInit(int size, SecureRandom random) Initializes this parameter generator for a certain size and source of randomness.

Methods inherited from class java.lang.Object

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

Field Detail

rnd_

protected SecureRandom rnd_

The source of randomness used to generate IVs.

size_

protected int size_

The iteration count.

Constructor Detail

PBEParameterGenerator

public PBEParameterGenerator()

Method Detail

engineInit

protected void engineInit(int size,
                          SecureRandom random)

Initializes this parameter generator for a certain size and source of randomness. This method does nothing.

Specified by:

engineInit in class AlgorithmParameterGeneratorSpi

Parameters:

size - The iteration count of the PBE. This must be in the range of [1,0x7fffff].

random - The source of randomness.

engineInit

protected void engineInit(AlgorithmParameterSpec paramSpec,
                          SecureRandom random)
                   throws InvalidAlgorithmParameterException

Initializes this parameter generator with a set of algorithm-specific parameter generation values.

Specified by:

engineInit in class AlgorithmParameterGeneratorSpi

Parameters:

spec - The set of algorithm-specific parameter generation values.

random - the source of randomness.

Throws:

InvalidAlgorithmParameterException - if the given parameter generation values are inappropriate for this parameter generator.

engineGenerateParameters

protected AlgorithmParameters engineGenerateParameters()

Generates the parameters.

Specified by:

engineGenerateParameters in class AlgorithmParameterGeneratorSpi

Returns:

the new AlgorithmParameters object.