source: trunk/gcc/libjava/java/security/spec/RSAKeyGenParameterSpec.java

/* RSAKeyGenParameterSpec.java --- RSA Key Generator Parameter Spec Class
   Copyright (C) 1999 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.

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along with GNU Classpath; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 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
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this exception to your version of the library, but you are not
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exception statement from your version. */


package java.security.spec;
import java.math.BigInteger;

/**
   This class generates a set of RSA Key parameters used in the generation
   of RSA keys.

   @since JDK 1.3

   @author Mark Benvenuto
*/
public class RSAKeyGenParameterSpec implements AlgorithmParameterSpec
{
  private int keysize;
  private BigInteger publicExponent;

  /**
     Public Exponent F0 = 3
  */
  public static final BigInteger F0 = new BigInteger("3");

  /**
     Public Exponent F4 = 3
  */
  public static final BigInteger F4 = new BigInteger("65537");

  /**
     Create a new RSAKeyGenParameterSpec to store the RSA key's keysize 
     and public exponent

     @param keysize Modulus size of key in bits
     @param publicExponent - the exponent
  */
  public RSAKeyGenParameterSpec(int keysize, BigInteger publicExponent)
  {
    this.keysize = keysize;
    this.publicExponent = publicExponent;
  }
    
  /**
     Return the size of the key.

     @return the size of the key.
  */
  public int getKeysize()
  {
    return keysize;
  }
    
  /**
     Return the public exponent.

     @return the public exponent.
  */
  public BigInteger getPublicExponent()
  {
    return publicExponent;
  }
}