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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.

See also:

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

From class java.lang.Object

Public constructors

AlgorithmParameterGeneratorSpi

Added in API level 1
AlgorithmParameterGeneratorSpi ()

Protected methods

engineGenerateParameters

Added in API level 1
AlgorithmParameters engineGenerateParameters ()

Generates the parameters.

Returns
AlgorithmParameters the new AlgorithmParameters object.

engineInit

Added in API level 1
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
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.
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