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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 = BigInteger.valueOf(3); 59: 60: /** 61: Public Exponent F4 = 3 62: */ 63: public static final BigInteger F4 = BigInteger.valueOf(65537L); 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: }