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87 lines
3.6 KiB
Java
87 lines
3.6 KiB
Java
/* DSAKeyPairGenerator.java -- Initialize a DSA key generator
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Copyright (C) 1998 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.security.interfaces;
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import java.security.SecureRandom;
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import java.security.InvalidParameterException;
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/**
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* This interface contains methods for intializing a Digital Signature
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* Algorithm key generation engine. The initialize methods may be called
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* any number of times. If no explicity initialization call is made, then
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* the engine defaults to generating 1024-bit keys using pre-calculated
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* base, prime, and subprime values.
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*
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* @version 0.0
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*
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* @author Aaron M. Renn (arenn@urbanophile.com)
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*/
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public interface DSAKeyPairGenerator
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{
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/**
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* Initializes the key generator with the specified DSA parameters and
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* random bit source
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*
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* @param params The DSA parameters to use
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* @param random The random bit source to use
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*
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* @exception InvalidParameterException If the parameters passed are not valid
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*/
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public abstract void initialize(DSAParams params, SecureRandom random)
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throws InvalidParameterException;
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/**
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* Initializes the key generator to a give modulus. If the <code>genParams</code>
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* value is <code>true</code> then new base, prime, and subprime values
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* will be generated for the given modulus. If not, the pre-calculated
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* values will be used. If no pre-calculated values exist for the specified
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* modulus, an exception will be thrown. It is guaranteed that there will
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* always be pre-calculated values for all modulus values between 512 and
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* 1024 bits inclusives.
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*
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* @param modlen The modulus length
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* @param genParams <code>true</code> to generate new DSA parameters, <code>false</code> otherwise
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* @param random The random bit source to use
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*
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* @exception InvalidParameterException If a parameter is invalid
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*/
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public abstract void initialize(int modlen, boolean genParams,
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SecureRandom random)
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throws InvalidParameterException;
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}
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