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Class au.net.aba.security.AlgorithmParametersSpi

java.lang.Object
   |
   +----au.net.aba.security.AlgorithmParametersSpi

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.

See Also:
AlgorithmParameters, AlgorithmParameterSpec, DSAParameterSpec

Variable Index

 o ident

Constructor Index

 o AlgorithmParametersSpi()

Method Index

 o engineGetEncoded()
Returns the parameters in their primary encoding format.
 o engineGetEncoded(String)
Returns the parameters encoded in the specified format.
 o engineGetParameterSpec(Class)
Returns a (transparent) specification of this parameters object.
 o engineInit(AlgorithmParameterSpec)
Initialises this parameters object using the parameters specified in paramSpec.
 o engineInit(byte[])
Imports the specified parameters and decodes them according to the primary decoding format for parameters.
 o engineInit(byte[], String)
Imports the parameters from params and decodes them according to the specified decoding format.
 o engineToString()
Returns a formatted string describing the parameters.

Variables

 o ident
 public static final String ident

Constructors

 o AlgorithmParametersSpi
 public AlgorithmParametersSpi()

Methods

 o engineInit
 protected abstract void engineInit(AlgorithmParameterSpec paramSpec) throws InvalidParameterSpecException
Initialises this parameters object using the parameters specified in paramSpec.

Parameters:
paramSpec - the parameter specification.
Throws: InvalidParameterSpecException
if the given parameter specification is inappropriate for the initialisation of this parameter object.
 o engineInit
 protected abstract void engineInit(byte params[]) throws IOException
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 - the encoded parameters.
Throws: IOException
on decoding errors
 o engineInit
 protected abstract void engineInit(byte params[],
                                    String format) throws IOException
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 - the encoded parameters.
format - the name of the decoding format.
Throws: IOException
on decoding errors
 o engineGetParameterSpec
 protected abstract AlgorithmParameterSpec engineGetParameterSpec(Class paramSpec) throws InvalidParameterSpecException
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 - the the specification class in which the parameters should be returned.
Returns:
the parameter specification.
Throws: InvalidParameterSpecException
if the requested parameter specification is inappropriate for this parameter object.
 o engineGetEncoded
 protected abstract byte[] engineGetEncoded() throws IOException
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:
the parameters encoded using the specified encoding scheme.
Throws: IOException
on encoding errors.
 o engineGetEncoded
 protected abstract byte[] engineGetEncoded(String format) throws IOException
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 - the name of the encoding format.
Returns:
the parameters encoded using the specified encoding scheme.
Throws: IOException
on encoding errors.
 o engineToString
 protected abstract String engineToString()
Returns a formatted string describing the parameters.

Returns:
a formatted string describing the parameters.

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