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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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
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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
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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;
  }
}