Source for java.security.spec.RSAKeyGenParameterSpec

   1: /* RSAKeyGenParameterSpec.java --- RSA Key Generator Parameter Spec Class
   2:    Copyright (C) 1999 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10:  
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package java.security.spec;
  40: import java.math.BigInteger;
  41: 
  42: /**
  43:    This class generates a set of RSA Key parameters used in the generation
  44:    of RSA keys.
  45: 
  46:    @since JDK 1.3
  47: 
  48:    @author Mark Benvenuto
  49: */
  50: public class RSAKeyGenParameterSpec implements AlgorithmParameterSpec
  51: {
  52:   private int keysize;
  53:   private BigInteger publicExponent;
  54: 
  55:   /**
  56:      Public Exponent F0 = 3
  57:   */
  58:   public static final BigInteger F0 = new BigInteger("3");
  59: 
  60:   /**
  61:      Public Exponent F4 = 3
  62:   */
  63:   public static final BigInteger F4 = new BigInteger("65537");
  64: 
  65:   /**
  66:      Create a new RSAKeyGenParameterSpec to store the RSA key's keysize 
  67:      and public exponent
  68: 
  69:      @param keysize Modulus size of key in bits
  70:      @param publicExponent - the exponent
  71:   */
  72:   public RSAKeyGenParameterSpec(int keysize, BigInteger publicExponent)
  73:   {
  74:     this.keysize = keysize;
  75:     this.publicExponent = publicExponent;
  76:   }
  77:     
  78:   /**
  79:      Return the size of the key.
  80: 
  81:      @return the size of the key.
  82:   */
  83:   public int getKeysize()
  84:   {
  85:     return keysize;
  86:   }
  87:     
  88:   /**
  89:      Return the public exponent.
  90: 
  91:      @return the public exponent.
  92:   */
  93:   public BigInteger getPublicExponent()
  94:   {
  95:     return publicExponent;
  96:   }
  97: }