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Préférences
Moteurs de recherche
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JavaTM 2 Platform Std. Ed. v1.5.0
java.security
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Constructor Summary | |
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protected |
AlgorithmParameterGenerator(AlgorithmParameterGeneratorSpi paramGenSpi,
Provider provider,
String algorithm)
Creates an AlgorithmParameterGenerator object. |
Method Summary | |
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AlgorithmParameters |
generateParameters()
Generates the parameters. |
String |
getAlgorithm()
Returns the standard name of the algorithm this parameter generator is associated with. |
static AlgorithmParameterGenerator |
getInstance(String algorithm)
Generates an AlgorithmParameterGenerator object that implements the specified digest algorithm. |
static AlgorithmParameterGenerator |
getInstance(String algorithm,
Provider provider)
Generates an AlgorithmParameterGenerator object for the requested algorithm, as supplied from the specified provider, if such a parameter generator is available from the provider. |
static AlgorithmParameterGenerator |
getInstance(String algorithm,
String provider)
Generates an AlgorithmParameterGenerator object for the requested algorithm, as supplied from the specified provider, if such a parameter generator is available from the provider. |
Provider |
getProvider()
Returns the provider of this algorithm parameter generator object. |
void |
init(AlgorithmParameterSpec genParamSpec)
Initializes this parameter generator with a set of algorithm-specific parameter generation values. |
void |
init(AlgorithmParameterSpec genParamSpec,
SecureRandom random)
Initializes this parameter generator with a set of algorithm-specific parameter generation values. |
void |
init(int size)
Initializes this parameter generator for a certain size. |
void |
init(int size,
SecureRandom random)
Initializes this parameter generator for a certain size and source of randomness. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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protected AlgorithmParameterGenerator(AlgorithmParameterGeneratorSpi paramGenSpi, Provider provider, String algorithm)
paramGenSpi
- the delegateprovider
- the provideralgorithm
- the algorithmMethod Detail |
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public final String getAlgorithm()
public static AlgorithmParameterGenerator getInstance(String algorithm) throws NoSuchAlgorithmException
algorithm
- the string name of the algorithm this
parameter generator is associated with.
NoSuchAlgorithmException
- if the algorithm is
not available in the environment.public static AlgorithmParameterGenerator getInstance(String algorithm, String provider) throws NoSuchAlgorithmException, NoSuchProviderException
algorithm
- the string name of the algorithm.provider
- the string name of the provider.
NoSuchAlgorithmException
- if the algorithm is
not available from the provider.
NoSuchProviderException
- if the provider is not
available in the environment.
IllegalArgumentException
- if the provider name is null
or empty.Provider
public static AlgorithmParameterGenerator getInstance(String algorithm, Provider provider) throws NoSuchAlgorithmException
provider
doesn't have to be registered.
algorithm
- the string name of the algorithm.provider
- the provider.
NoSuchAlgorithmException
- if the algorithm is
not available from the provider.
IllegalArgumentException
- if the provider
is
null.Provider
public final Provider getProvider()
public final void init(int size)
SecureRandom
implementation of the highest-priority installed provider is used as
the source of randomness.
(If none of the installed providers supply an implementation of
SecureRandom
, a system-provided source of randomness is
used.)
size
- the size (number of bits).public final void init(int size, SecureRandom random)
size
- the size (number of bits).random
- the source of randomness.public final void init(AlgorithmParameterSpec genParamSpec) throws InvalidAlgorithmParameterException
SecureRandom
implementation of the highest-priority installed provider is used as
the source of randomness.
(If none of the installed providers supply an implementation of
SecureRandom
, a system-provided source of randomness is
used.)
genParamSpec
- the set of algorithm-specific parameter generation values.
InvalidAlgorithmParameterException
- if the given parameter
generation values are inappropriate for this parameter generator.public final void init(AlgorithmParameterSpec genParamSpec, SecureRandom random) throws InvalidAlgorithmParameterException
genParamSpec
- the set of algorithm-specific parameter generation values.random
- the source of randomness.
InvalidAlgorithmParameterException
- if the given parameter
generation values are inappropriate for this parameter generator.public final AlgorithmParameters generateParameters()