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.
See the Keysize Restriction sections of the
JDK Providers
document for information on the AlgorithmParameterGenerator defaults
used by JDK providers.
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.
AlgorithmParameterGenerator, AlgorithmParameters, java.security.spec.AlgorithmParameterSpec
| Access | Constructor and Description |
|---|---|
| public |
| Modifier and Type | Method and Description |
|---|---|
| protected abstract AlgorithmParameters | |
| protected abstract void | engineInit(int
the size (number of bits). size, SecureRandom the source of randomness. random)Initializes this parameter generator for a certain size and source of randomness. |
| protected abstract void | engineInit(AlgorithmParameterSpec
the set of algorithm-specific parameter generation values. genParamSpec, SecureRandom the source of randomness. random)Initializes this parameter generator with a set of algorithm-specific parameter generation values. |
| AlgorithmParameterGeneratorSpi | back to summary |
|---|---|
| public AlgorithmParameterGeneratorSpi() Constructor for subclasses to call. | |
| engineGenerateParameters | back to summary |
|---|---|
| protected abstract AlgorithmParameters engineGenerateParameters() Generates the parameters.
| |
| engineInit | back to summary |
|---|---|
| protected abstract void engineInit(int size, SecureRandom random) Initializes this parameter generator for a certain size and source of randomness.
| |
| engineInit | back to summary |
|---|---|
| protected abstract void engineInit(AlgorithmParameterSpec genParamSpec, SecureRandom random) throws InvalidAlgorithmParameterException Initializes this parameter generator with a set of algorithm-specific parameter generation values.
| |