Package org.wildfly.security.util

Class AbstractAlgorithmParametersSpiImpl<P extends AlgorithmParameterSpec>

java.lang.Object

java.security.AlgorithmParametersSpi

org.wildfly.security.util.AbstractAlgorithmParametersSpiImpl<P>

Type Parameters:

P - the parameter type represented by the subclass

Direct Known Subclasses:

DigestPasswordAlgorithmParametersSpiImpl, IteratedPasswordAlgorithmParametersSpiImpl, IteratedSaltedPasswordAlgorithmParametersSpiImpl, MaskedPasswordAlgorithmParametersSpiImpl, OneTimePasswordAlgorithmParametersSpiImpl, RSAParameterSpiImpl, SaltedPasswordAlgorithmParametersSpiImpl

public abstract class AbstractAlgorithmParametersSpiImpl<P extends AlgorithmParameterSpec>
extends AlgorithmParametersSpi

A base class for classes which implement AlgorithmParametersSpi that encode parameters using ASN.1.

Field Summary

Fields

Modifier and Type	Field	Description
private byte[]	encoded
private P	parameterSpec

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractAlgorithmParametersSpiImpl()	Construct a new instance.

Method Summary

Modifier and Type	Method	Description
private void	checkInit()
protected abstract P	engineDecode(ASN1Decoder decoder)	Decode a parameter instance.
protected abstract void	engineEncode(ASN1Encoder encoder, P parameters)	Encode a parameter instance.
protected byte[]	engineGetEncoded()	Implementation of the engineGetEncoded method.
protected byte[]	engineGetEncoded(String format)	Implementation of the engineGetEncoded method.
protected <T extends AlgorithmParameterSpec> T	engineGetParameterSpec(Class<T> type)	Implementation of the engineGetParameterSpec method.
protected void	engineInit(byte[] params)	Implementation of the engineInit method.
protected void	engineInit(byte[] params, String format)	Implementation of the engineInit method.
protected void	engineInit(AlgorithmParameterSpec paramSpec)	Implementation of the engineInit method.
protected String	engineToString()	Implementation of the engineToString method.
protected abstract Class<P>	getParameterType()	Get the type of parameters for this class.

Methods inherited from class java.lang.Object

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

Field Detail

parameterSpec

private P extends AlgorithmParameterSpec parameterSpec

encoded

private byte[] encoded

Constructor Detail

AbstractAlgorithmParametersSpiImpl

protected AbstractAlgorithmParametersSpiImpl()

Construct a new instance.

Method Detail

getParameterType

protected abstract Class<P> getParameterType()

Get the type of parameters for this class.

Returns:

the type of parameters for this class (must not be null)

engineInit

protected final void engineInit(AlgorithmParameterSpec paramSpec)
                         throws InvalidParameterSpecException

Implementation of the engineInit method.

Specified by:

engineInit in class AlgorithmParametersSpi

Parameters:

paramSpec - the parameter specification

Throws:

InvalidParameterSpecException - if an argument is invalid or encoding failed

engineInit

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

Implementation of the engineInit method.

Specified by:

engineInit in class AlgorithmParametersSpi

Parameters:

params - the encoded parameter specification

Throws:

IOException - if decoding failed

engineInit

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

Implementation of the engineInit method.

Specified by:

engineInit in class AlgorithmParametersSpi

Parameters:

params - the encoded parameter specification

format - the format (must be ASN.1)

Throws:

IOException - if decoding failed or the format is not equal to ASN.1

engineEncode

protected abstract void engineEncode(ASN1Encoder encoder,
                                     P parameters)
                              throws ASN1Exception,
                                     InvalidParameterSpecException

Encode a parameter instance.

Parameters:

encoder - the encoder to use (not null)

parameters - the parameter instance (not null)

Throws:

ASN1Exception - if there is an encoding problem (usually thrown directly by the ASN1Encoder)

InvalidParameterSpecException - if some other encoding error occurred

engineDecode

protected abstract P engineDecode(ASN1Decoder decoder)
                           throws ASN1Exception,
                                  IOException

Decode a parameter instance. Subclasses should ensure that all elements are consumed (including sequence terminators and so forth).

Parameters:

decoder - the decoder to use (not null)

Returns:

the parameter instance (must not be null)

Throws:

ASN1Exception - if there is a decoding problem (usually thrown directly by the ASN1Decoder)

IOException - if some other decoding error occurred

engineGetParameterSpec

protected final <T extends AlgorithmParameterSpec> T engineGetParameterSpec(Class<T> type)
                                                                     throws InvalidParameterSpecException

Implementation of the engineGetParameterSpec method.

Specified by:

engineGetParameterSpec in class AlgorithmParametersSpi

Type Parameters:

T - the parameter specification type

Parameters:

type - the parameter specification type class (must not be null)

Returns:

the parameter specification (must not be null)

Throws:

InvalidParameterSpecException - if the type is not supported

engineGetEncoded

protected final byte[] engineGetEncoded()

Implementation of the engineGetEncoded method.

Specified by:

engineGetEncoded in class AlgorithmParametersSpi

Returns:

the encoded representation (not null)

engineGetEncoded

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

Implementation of the engineGetEncoded method.

Specified by:

engineGetEncoded in class AlgorithmParametersSpi

Parameters:

format - the format string (must not be null)

Returns:

the encoded representation (not null)

Throws:

IOException - if the given format is not ASN.1

checkInit

private void checkInit()

engineToString

protected String engineToString()

Implementation of the engineToString method.

Specified by:

engineToString in class AlgorithmParametersSpi

Returns:

the string representation