001    /* Copyright  (c) 2002 Graz University of Technology. All rights reserved.
002     *
003     * Redistribution and use in  source and binary forms, with or without 
004     * modification, are permitted  provided that the following conditions are met:
005     *
006     * 1. Redistributions of  source code must retain the above copyright notice,
007     *    this list of conditions and the following disclaimer.
008     *
009     * 2. Redistributions in  binary form must reproduce the above copyright notice,
010     *    this list of conditions and the following disclaimer in the documentation
011     *    and/or other materials provided with the distribution.
012     *  
013     * 3. The end-user documentation included with the redistribution, if any, must
014     *    include the following acknowledgment:
015     * 
016     *    "This product includes software developed by IAIK of Graz University of
017     *     Technology."
018     * 
019     *    Alternately, this acknowledgment may appear in the software itself, if 
020     *    and wherever such third-party acknowledgments normally appear.
021     *  
022     * 4. The names "Graz University of Technology" and "IAIK of Graz University of
023     *    Technology" must not be used to endorse or promote products derived from 
024     *    this software without prior written permission.
025     *  
026     * 5. Products derived from this software may not be called 
027     *    "IAIK PKCS Wrapper", nor may "IAIK" appear in their name, without prior 
028     *    written permission of Graz University of Technology.
029     *  
030     *  THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
031     *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
032     *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
033     *  PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE LICENSOR BE
034     *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
035     *  OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
036     *  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
037     *  OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
038     *  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
039     *  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
040     *  OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
041     *  POSSIBILITY  OF SUCH DAMAGE.
042     */
043    
044    package demo.pkcs.pkcs11;
045    
046    import java.io.FileOutputStream;
047    
048    import iaik.pkcs.pkcs11.Module;
049    import iaik.pkcs.pkcs11.Session;
050    import iaik.pkcs.pkcs11.Slot;
051    import iaik.pkcs.pkcs11.Token;
052    
053    
054    
055    /**
056     * This demo program uses a PKCS#11 module to produce random data.
057     * Optionally the random data can be written to file.
058     *
059     * @author <a href="mailto:Karl.Scheibelhofer@iaik.at"> Karl Scheibelhofer </a>
060     * @version 0.1
061     * @invariants
062     */
063    public class GenerateRandom {
064    
065      public static void main(String[] args) {
066        if ((args.length != 2) && (args.length != 3)) {
067          printUsage();
068          System.exit(1);
069        }
070        int numberOfBytes = -1;
071        try {
072          numberOfBytes = Integer.parseInt(args[1]);
073        } catch (Exception ex) {
074          printUsage();
075          System.exit(1);
076        }
077    
078        try {
079    
080            Module pkcs11Module = Module.getInstance(args[0]);
081            pkcs11Module.initialize(null);
082    
083            Slot[] slots = pkcs11Module.getSlotList(Module.SlotRequirement.TOKEN_PRESENT);
084    
085            if (slots.length == 0) {
086              System.out.println("No slot with present token found!");
087              System.exit(0);
088            }
089    
090            Slot selectedSlot = slots[0];
091            Token token = selectedSlot.getToken();
092    
093            Session session =
094                token.openSession(Token.SessionType.SERIAL_SESSION, Token.SessionReadWriteBehavior.RO_SESSION, null, null);
095    
096            System.out.println("################################################################################");
097            System.out.print("generating " + numberOfBytes + " bytes of random data... ");
098    
099            byte[] dataBuffer = session.generateRandom(numberOfBytes);
100    
101            System.out.println("finished");
102            System.out.println("################################################################################");
103    
104    
105            if (args.length == 3) {
106              System.out.println("################################################################################");
107              System.out.println("writing random data to file : " + args[2]);
108    
109              FileOutputStream dataOutput = new FileOutputStream(args[2]);
110              dataOutput.write(dataBuffer);
111              dataOutput.flush();
112              dataOutput.close();
113              System.out.println("################################################################################");
114            }
115    
116            session.closeSession();
117            pkcs11Module.finalize(null);
118    
119        } catch (Throwable thr) {
120          thr.printStackTrace();
121        }
122      }
123    
124      public static void printUsage() {
125        System.out.println("Usage: GenerateRandom <PKCS#11 module> <number of bytes> [<output file>]");
126        System.out.println(" e.g.: GenerateRandom pk2priv.dll 128 random.dat");
127        System.out.println("The given DLL must be in the search path of the system.");
128      }
129    
130    }