Package java.security

Class AlgorithmParametersSpi

java.lang.Object

java.security.AlgorithmParametersSpi

Direct Known Subclasses:

AlgorithmParametersSpi, AlgorithmParametersSpi, AlgorithmParametersSpi, BaseAlgorithmParameters

public abstract class AlgorithmParametersSpi
extends Object

AlgorithmParametersSpi is the Service Provider Interface (SPI) definition for AlgorithmParameters.

See Also:

AlgorithmParameters

Constructor Summary

Constructors

Constructor	Description
AlgorithmParametersSpi()

Method Summary

Modifier and Type	Method	Description
protected abstract byte[]	engineGetEncoded()	Returns the parameters in their default encoding format.
protected abstract byte[]	engineGetEncoded(String format)	Returns the parameters in the specified encoding format.
protected abstract <T extends AlgorithmParameterSpec> T	engineGetParameterSpec(Class<T> paramSpec)	Returns the AlgorithmParameterSpec for this AlgorithmParametersSpi.
protected abstract void	engineInit(byte[] params)	Initializes this AlgorithmParametersSpi with the specified byte[] using the default decoding format for parameters.
protected abstract void	engineInit(byte[] params, String format)	Initializes this AlgorithmParametersSpi with the specified byte[] using the specified decoding format.
protected abstract void	engineInit(AlgorithmParameterSpec paramSpec)	Initializes this AlgorithmParametersSpi with the specified AlgorithmParameterSpec.
protected abstract String	engineToString()	Returns a string containing a concise, human-readable description of this AlgorithmParametersSpi.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AlgorithmParametersSpi

public AlgorithmParametersSpi()

Method Detail

engineInit

protected abstract void engineInit(AlgorithmParameterSpec paramSpec)
                            throws InvalidParameterSpecException

Initializes this AlgorithmParametersSpi with the specified AlgorithmParameterSpec.

Parameters:

paramSpec - the parameter specification.

Throws:

InvalidParameterSpecException - if this AlgorithmParametersSpi has already been initialized or the given paramSpec is not appropriate for initializing this AlgorithmParametersSpi.

engineInit

protected abstract void engineInit(byte[] params)
                            throws IOException

Initializes this AlgorithmParametersSpi with the specified byte[] using the default decoding format for parameters. The default encoding format is ASN.1.

Parameters:

params - the encoded parameters.

Throws:

IOException - if this AlgorithmParametersSpi has already been initialized, or the parameter could not be encoded.

engineInit

protected abstract void engineInit(byte[] params,
                                   String format)
                            throws IOException

Initializes this AlgorithmParametersSpi with the specified byte[] using the specified decoding format.

Parameters:

params - the encoded parameters.

format - the name of the decoding format.

Throws:

IOException - if this AlgorithmParametersSpi has already been initialized, or the parameter could not be encoded.

engineGetParameterSpec

protected abstract <T extends AlgorithmParameterSpec> T engineGetParameterSpec(Class<T> paramSpec)
                                                                        throws InvalidParameterSpecException

Returns the AlgorithmParameterSpec for this AlgorithmParametersSpi.

Parameters:

paramSpec - the type of the parameter specification in which this parameters should be converted.

Returns:

the AlgorithmParameterSpec for this AlgorithmParametersSpi.

Throws:

InvalidParameterSpecException - if this AlgorithmParametersSpi has already been initialized, or if this parameters could not be converted to the specified class.

engineGetEncoded

protected abstract byte[] engineGetEncoded()
                                    throws IOException

Returns the parameters in their default encoding format. The default encoding format is ASN.1.

Returns:

the encoded parameters.

Throws:

IOException - if this AlgorithmParametersSpi has already been initialized, or if this parameters could not be encoded.

engineGetEncoded

protected abstract byte[] engineGetEncoded(String format)
                                    throws IOException

Returns the parameters in the specified encoding format.

Parameters:

format - the name of the encoding format.

Returns:

the encoded parameters.

Throws:

IOException - if this AlgorithmParametersSpi has already been initialized, or if this parameters could not be encoded.

engineToString

protected abstract String engineToString()

Returns a string containing a concise, human-readable description of this AlgorithmParametersSpi.

Returns:

a printable representation for this AlgorithmParametersSpi.