gnu.java.security.provider

Class DSAParameters


public class DSAParameters
extends AlgorithmParametersSpi

Method Summary

byte[]
engineGetEncoded()
Returns the parameters in the default encoding format.
byte[]
engineGetEncoded(String format)
Returns the parameters in the specified encoding format.
AlgorithmParameterSpec
engineGetParameterSpec(Class paramSpec)
Returns a specification of this AlgorithmParameters object.
void
engineInit(byte[] params)
Initializes the engine with the specified parameters stored in the byte array and decodes them according to the ASN.1 specification.
void
engineInit(byte[] params, String format)
Initializes the engine with the specified parameters stored in the byte array and decodes them according to the specified decoding specification.
void
engineInit(AlgorithmParameterSpec paramSpec)
Initializes the engine with the specified AlgorithmParameterSpec class.
String
engineToString()
Returns a string describing the parameters in the AlgorithmParametersSpi class.

Methods inherited from class java.security.AlgorithmParametersSpi

engineGetEncoded, engineGetEncoded, engineGetParameterSpec, engineInit, engineInit, engineInit, engineToString

Methods inherited from class java.lang.Object

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

Method Details

engineGetEncoded

public byte[] engineGetEncoded()
            throws IOException
Returns the parameters in the default encoding format. The primary encoding format is ASN.1 format if it exists for the specified type.
Overrides:
engineGetEncoded in interface AlgorithmParametersSpi
Returns:
byte array representing the parameters

engineGetEncoded

public byte[] engineGetEncoded(String format)
            throws IOException
Returns the parameters in the specified encoding format. If format is null then the primary encoding format is used, the ASN.1 format, if it exists for the specified type.
Overrides:
engineGetEncoded in interface AlgorithmParametersSpi
Returns:
byte array representing the parameters

engineGetParameterSpec

public AlgorithmParameterSpec engineGetParameterSpec(Class paramSpec)
            throws InvalidParameterSpecException
Returns a specification of this AlgorithmParameters object. paramSpec identifies the class to return the AlgortihmParameters in.
Overrides:
engineGetParameterSpec in interface AlgorithmParametersSpi
Parameters:
paramSpec - Class to return AlgorithmParameters in
Returns:
the parameter specification
Throws:
InvalidParameterSpecException - if the paramSpec is an invalid parameter class

engineInit

public void engineInit(byte[] params)
            throws IOException
Initializes the engine with the specified parameters stored in the byte array and decodes them according to the ASN.1 specification. If the ASN.1 specification exists then it succeeds or else it throws IOException.
Overrides:
engineInit in interface AlgorithmParametersSpi
Parameters:
params - Parameters to initialize with
Throws:
IOException - Decoding Error

engineInit

public void engineInit(byte[] params,
                       String format)
            throws IOException
Initializes the engine with the specified parameters stored in the byte array and decodes them according to the specified decoding specification. If format is null, then it is decoded using the ASN.1 specification if it exists or else it throws IOException.
Overrides:
engineInit in interface AlgorithmParametersSpi
Parameters:
params - Parameters to initialize with
format - Name of decoding format to use
Throws:
IOException - Decoding Error

engineInit

public void engineInit(AlgorithmParameterSpec paramSpec)
            throws InvalidParameterSpecException
Initializes the engine with the specified AlgorithmParameterSpec class.
Overrides:
engineInit in interface AlgorithmParametersSpi
Parameters:
paramSpec - A AlgorithmParameterSpec to initialize with
Throws:
InvalidParameterSpecException - For an inapporiate ParameterSpec class

engineToString

public String engineToString()
Returns a string describing the parameters in the AlgorithmParametersSpi class.
Overrides:
engineToString in interface AlgorithmParametersSpi
Returns:
A string representing the format of the parameters.

DSAParameters.java --- DSA Parameters Implementation Copyright (C) 1999, 2003, 2004 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.