/* * The contents of this file are subject to the Mozilla Public * License Version 1.1 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or * implied. See the License for the specific language governing * rights and limitations under the License. * * The Original Code is the Netscape Security Services for Java. * * The Initial Developer of the Original Code is Netscape * Communications Corporation. Portions created by Netscape are * Copyright (C) 1998-2000 Netscape Communications Corporation. All * Rights Reserved. * * Contributor(s): * * Alternatively, the contents of this file may be used under the * terms of the GNU General Public License Version 2 or later (the * "GPL"), in which case the provisions of the GPL are applicable * instead of those above. If you wish to allow use of your * version of this file only under the terms of the GPL and not to * allow others to use your version of this file under the MPL, * indicate your decision by deleting the provisions above and * replace them with the notice and other provisions required by * the GPL. If you do not delete the provisions above, a recipient * may use your version of this file under either the MPL or the * GPL. */ import org.mozilla.jss.*; import org.mozilla.jss.crypto.*; /** * A command-line utility for generating PQG parameters for DSA * Key operations. Can be used for testing. * Takes the keysize as the sole argument. */ public class PQGGen { public static void main(String args[]) { int size; PQGParams pqg; try { if(args.length != 1) { throw new Exception("Usage: java PQGGen "); } size = Integer.parseInt(args[0]); System.out.println("Generating PQG parameters for "+size+ "-bit keypairs. This could take hours..."); CryptoManager.initialize(); pqg = PQGParams.generate(size); System.out.println("Generated PQG Parameters."); System.out.println("Verifying PQG Parameters. "+ "This could take a few minutes..."); if( ! pqg.paramsAreValid() ) { throw new Exception("ERROR: Generated parameters are invalid."); } System.out.println("Parameters are valid!"); System.out.println("P: "+pqg.getP()); System.out.println("Q: "+pqg.getQ()); System.out.println("G: "+pqg.getG()); System.out.println("H: "+pqg.getH()); System.out.println("seed: "+pqg.getSeed()); System.out.println("counter: "+pqg.getCounter()); } catch(NumberFormatException e) { System.err.println("Invalid key size: "+e); } catch(PQGParamGenException e) { System.err.println(e); } catch(java.security.InvalidParameterException e) { System.err.println("Invalid key size: "+e); } catch(Exception e) { System.err.println(e); } } }