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java.security.interfaces

Interface DSAKeyPairGenerator

Known Implementing Classes:
DSSKeyPairGeneratorSpi
public interface DSAKeyPairGenerator
This interface contains methods for intializing a Digital Signature Algorithm key generation engine. The initialize methods may be called any number of times. If no explicity initialization call is made, then the engine defaults to generating 1024-bit keys using pre-calculated base, prime, and subprime values.

Method Summary

void
initialize(int modlen, boolean genParams, SecureRandom random)
Initializes the key generator to a give modulus.
void
initialize(DSAParams params, SecureRandom random)
Initializes the key generator with the specified DSA parameters and random bit source

Method Details

initialize

public void initialize(int modlen,
                       boolean genParams,
                       SecureRandom random)
            throws InvalidParameterException
Initializes the key generator to a give modulus. If the genParams value is true then new base, prime, and subprime values will be generated for the given modulus. If not, the pre-calculated values will be used. If no pre-calculated values exist for the specified modulus, an exception will be thrown. It is guaranteed that there will always be pre-calculated values for all modulus values between 512 and 1024 bits inclusives.
Parameters:
modlen - The modulus length
genParams - true to generate new DSA parameters, false otherwise
random - The random bit source to use
Throws:
InvalidParameterException - If a parameter is invalid

initialize

public void initialize(DSAParams params,
                       SecureRandom random)
            throws InvalidParameterException
Initializes the key generator with the specified DSA parameters and random bit source
Parameters:
params - The DSA parameters to use
random - The random bit source to use
Throws:
InvalidParameterException - If the parameters passed are not valid
DSAKeyPairGenerator.java -- Initialize a DSA key generator Copyright (C) 1998, 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.

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