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. |
