001/* RSAKeyGenParameterSpec.java --- RSA Key Generator Parameter Spec Class 002 Copyright (C) 1999 Free Software Foundation, Inc. 003 004This file is part of GNU Classpath. 005 006GNU Classpath is free software; you can redistribute it and/or modify 007it under the terms of the GNU General Public License as published by 008the Free Software Foundation; either version 2, or (at your option) 009any later version. 010 011GNU Classpath is distributed in the hope that it will be useful, but 012WITHOUT ANY WARRANTY; without even the implied warranty of 013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014General Public License for more details. 015 016You should have received a copy of the GNU General Public License 017along with GNU Classpath; see the file COPYING. If not, write to the 018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 01902110-1301 USA. 020 021Linking this library statically or dynamically with other modules is 022making a combined work based on this library. Thus, the terms and 023conditions of the GNU General Public License cover the whole 024combination. 025 026As a special exception, the copyright holders of this library give you 027permission to link this library with independent modules to produce an 028executable, regardless of the license terms of these independent 029modules, and to copy and distribute the resulting executable under 030terms of your choice, provided that you also meet, for each linked 031independent module, the terms and conditions of the license of that 032module. An independent module is a module which is not derived from 033or based on this library. If you modify this library, you may extend 034this exception to your version of the library, but you are not 035obligated to do so. If you do not wish to do so, delete this 036exception statement from your version. */ 037 038 039package java.security.spec; 040import java.math.BigInteger; 041 042/** 043 This class generates a set of RSA Key parameters used in the generation 044 of RSA keys. 045 046 @since JDK 1.3 047 048 @author Mark Benvenuto 049*/ 050public class RSAKeyGenParameterSpec implements AlgorithmParameterSpec 051{ 052 private int keysize; 053 private BigInteger publicExponent; 054 055 /** 056 Public Exponent F0 = 3 057 */ 058 public static final BigInteger F0 = BigInteger.valueOf(3); 059 060 /** 061 Public Exponent F4 = 3 062 */ 063 public static final BigInteger F4 = BigInteger.valueOf(65537L); 064 065 /** 066 Create a new RSAKeyGenParameterSpec to store the RSA key's keysize 067 and public exponent 068 069 @param keysize Modulus size of key in bits 070 @param publicExponent - the exponent 071 */ 072 public RSAKeyGenParameterSpec(int keysize, BigInteger publicExponent) 073 { 074 this.keysize = keysize; 075 this.publicExponent = publicExponent; 076 } 077 078 /** 079 Return the size of the key. 080 081 @return the size of the key. 082 */ 083 public int getKeysize() 084 { 085 return keysize; 086 } 087 088 /** 089 Return the public exponent. 090 091 @return the public exponent. 092 */ 093 public BigInteger getPublicExponent() 094 { 095 return publicExponent; 096 } 097}