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JavaTM 2 Platform Std. Ed. v1.3.1 |
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java.security
Class AlgorithmParameterGeneratorSpi
java.lang.Object | +--java.security.AlgorithmParameterGeneratorSpi
- public abstract class AlgorithmParameterGeneratorSpi
- extends Object
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.
- Since:
- 1.2
- See Also:
AlgorithmParameterGenerator,AlgorithmParameters,AlgorithmParameterSpec
| Constructor Summary | |
AlgorithmParameterGeneratorSpi()
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| Method Summary | |
protected abstract AlgorithmParameters |
engineGenerateParameters()
Generates the parameters. |
protected abstract void |
engineInit(AlgorithmParameterSpec genParamSpec,
SecureRandom random)
Initializes this parameter generator with a set of algorithm-specific parameter generation values. |
protected abstract 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 |
| Constructor Detail |
AlgorithmParameterGeneratorSpi
public AlgorithmParameterGeneratorSpi()
| Method Detail |
engineInit
protected abstract void engineInit(int size,
SecureRandom random)
- Initializes this parameter generator for a certain size
and source of randomness.
- Parameters:
size- the size (number of bits).random- the source of randomness.
engineInit
protected abstract void engineInit(AlgorithmParameterSpec genParamSpec, SecureRandom random) throws InvalidAlgorithmParameterException
- Initializes this parameter generator with a set of
algorithm-specific parameter generation values.
- Parameters:
genParamSpec- 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 abstract AlgorithmParameters engineGenerateParameters()
- Generates the parameters.
- Returns:
- the new AlgorithmParameters object.
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JavaTM 2 Platform Std. Ed. v1.3.1 |
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