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public abstract class AlgorithmParametersSpi
extends Object
This class defines the Service Provider Interface (SPI) for the AlgorithmParameters class, which is used to manage algorithm parameters.
All the abstract methods in this class must be implemented by each cryptographic service provider who wishes to supply parameter management for a particular algorithm.
Summary
Protected methods |
|---|
abstract byte[] | engineGetEncoded(String format) Returns the parameters encoded in the specified format. |
abstract byte[] | engineGetEncoded() Returns the parameters in their primary encoding format. |
abstract <T extends AlgorithmParameterSpec> T | engineGetParameterSpec(Class<T> paramSpec) Returns a (transparent) specification of this parameters object. |
abstract void | engineInit(byte[] params, String format) Imports the parameters from params and decodes them according to the specified decoding format. |
abstract void | engineInit(AlgorithmParameterSpec paramSpec) Initializes this parameters object using the parameters specified in paramSpec. |
abstract void | engineInit(byte[] params) Imports the specified parameters and decodes them according to the primary decoding format for parameters. |
abstract String | engineToString() Returns a formatted string describing the parameters. |
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
public AlgorithmParametersSpi ()
Protected methods
engineGetEncoded
protected abstract byte[] engineGetEncoded (String format)
Returns the parameters encoded in the specified format. If format is null, the primary encoding format for parameters is used. The primary encoding format is ASN.1, if an ASN.1 specification for these parameters exists.
| Parameters |
|---|
format | String: the name of the encoding format. |
| Returns |
|---|
byte[] | the parameters encoded using the specified encoding scheme. |
engineGetEncoded
protected abstract byte[] engineGetEncoded ()
Returns the parameters in their primary encoding format. The primary encoding format for parameters is ASN.1, if an ASN.1 specification for this type of parameters exists.
| Returns |
|---|
byte[] | the parameters encoded using their primary encoding format. |
engineGetParameterSpec
protected abstract T engineGetParameterSpec (Class<T> paramSpec)
Returns a (transparent) specification of this parameters object. paramSpec identifies the specification class in which the parameters should be returned. It could, for example, be DSAParameterSpec.class, to indicate that the parameters should be returned in an instance of the DSAParameterSpec class.
| Parameters |
|---|
paramSpec | Class: the specification class in which the parameters should be returned. |
| Returns |
|---|
T | the parameter specification. |
engineInit
protected abstract void engineInit (byte[] params, String format)
Imports the parameters from params and decodes them according to the specified decoding format. If format is null, the primary decoding format for parameters is used. The primary decoding format is ASN.1, if an ASN.1 specification for these parameters exists.
| Parameters |
|---|
params | byte: the encoded parameters. |
format | String: the name of the decoding format. |
engineInit
protected abstract void engineInit (AlgorithmParameterSpec paramSpec)
Initializes this parameters object using the parameters specified in paramSpec.
| Parameters |
|---|
paramSpec | AlgorithmParameterSpec: the parameter specification. |
engineInit
protected abstract void engineInit (byte[] params)
Imports the specified parameters and decodes them according to the primary decoding format for parameters. The primary decoding format for parameters is ASN.1, if an ASN.1 specification for this type of parameters exists.
| Parameters |
|---|
params | byte: the encoded parameters. |
engineToString
protected abstract String engineToString ()
Returns a formatted string describing the parameters.
| Returns |
|---|
String | a formatted string describing the parameters. |
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Last updated 2025-02-10 UTC.
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