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. However, note that defaults may vary across different providers. Additionally, the default value for a provider may change in a future version. Therefore, it is recommended to explicitly initialize the AlgorithmParameterGenerator instead of relying on provider-specific defaults.

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.