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.

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

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

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.