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AlgorithmParameterGeneratorSpi

public abstract class AlgorithmParameterGeneratorSpi
extends Object

java.lang.Object
   ↳ java.security.AlgorithmParameterGeneratorSpi


This class defines the Service Provider Interface (SPI) for the AlgorithmParameterGenerator class, which is used to generate a set of parameters to be used with a certain algorithm.

All the abstract methods in this class must be implemented by each cryptographic service provider who wishes to supply the implementation of a parameter generator for a particular algorithm.

In case the client does not explicitly initialize the AlgorithmParameterGenerator (via a call to an engineInit method), each provider must supply (and document) a default initialization. For example, the Sun provider uses a default modulus prime size of 1024 bits for the generation of DSA parameters.

Summary

Public constructors

AlgorithmParameterGeneratorSpi()

Protected methods

abstract AlgorithmParameters engineGenerateParameters()

Generates the parameters.

abstract void engineInit(AlgorithmParameterSpec genParamSpec, SecureRandom random)

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

abstract void engineInit(int size, SecureRandom random)

Initializes this parameter generator for a certain size and source of randomness.

Inherited methods

Public constructors

AlgorithmParameterGeneratorSpi

added in API level 1
public AlgorithmParameterGeneratorSpi ()

Protected methods

engineGenerateParameters

added in API level 1
protected abstract AlgorithmParameters engineGenerateParameters ()

Generates the parameters.

Returns
AlgorithmParameters the new AlgorithmParameters object.

engineInit

added in API level 1
protected abstract void engineInit (AlgorithmParameterSpec genParamSpec, 
                SecureRandom random)

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

Parameters
genParamSpec AlgorithmParameterSpec: the set of algorithm-specific parameter generation values.

random SecureRandom: the source of randomness.

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

engineInit

added in API level 1
protected abstract void engineInit (int size, 
                SecureRandom random)

Initializes this parameter generator for a certain size and source of randomness.

Parameters
size int: the size (number of bits).

random SecureRandom: the source of randomness.