    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.ByteArrayOutputStream;
    047    import java.io.FileInputStream;
    048    import java.io.InputStream;
    049    import java.io.PrintWriter;
    050    import java.util.Arrays;
    051
    052    import iaik.pkcs.pkcs11.Mechanism;
    053    import iaik.pkcs.pkcs11.Module;
    054    import iaik.pkcs.pkcs11.Session;
    055    import iaik.pkcs.pkcs11.Slot;
    056    import iaik.pkcs.pkcs11.Token;
    057    import iaik.pkcs.pkcs11.objects.DES3SecretKey;
    058    import iaik.pkcs.pkcs11.parameters.InitializationVectorParameters;
    059    // import iaik.security.provider.IAIK;
    060
    061
    062
    063    /**
    064     * This demo program uses a PKCS#11 module to encrypt a given file and test
    065     * if the data can be decrpted.
    066     *
    067     * @author <a href="mailto:Karl.Scheibelhofer@iaik.at"> Karl Scheibelhofer </a>
    068     * @version 0.1
    069     * @invariants
    070     */
    071    public class EncryptDecrypt {
    072
    073      static PrintWriter output_;
    074
    075      static {
    076        try {
    077          //output_ = new PrintWriter(new FileWriter("Encrypt_output.txt"), true);
    078          output_ = new PrintWriter(System.out, true);
    079        } catch (Throwable thr) {
    080          thr.printStackTrace();
    081          output_ = new PrintWriter(System.out, true);
    082        }
    083      }
    084
    085      public static void main(String[] args) {
    086        if (args.length != 3) {
    087          printUsage();
    088          System.exit(1);
    089        }
    090
    091        try {
    092            // Security.addProvider(new IAIK());
    093
    094            Module pkcs11Module = Module.getInstance(args[0]);
    095            pkcs11Module.initialize(null);
    096
    097            Slot[] slots = pkcs11Module.getSlotList(Module.SlotRequirement.TOKEN_PRESENT);
    098
    099            if (slots.length == 0) {
    100              output_.println("No slot with present token found!");
    101              System.exit(0);
    102            }
    103
    104            Slot selectedSlot = slots[0];
    105            Token token = selectedSlot.getToken();
    106
    107            Session session =
    108                token.openSession(Token.SessionType.SERIAL_SESSION, Token.SessionReadWriteBehavior.RO_SESSION, null, null);
    109
    110            // login user
    111            session.login(Session.UserType.USER, args[1].toCharArray());
    112
    113            output_.println("################################################################################");
    114            output_.println("generate secret encryption/decryption key");
    115            Mechanism keyMechanism = Mechanism.DES3_KEY_GEN;
    116            DES3SecretKey secretEncryptionKeyTemplate = new DES3SecretKey();
    117            secretEncryptionKeyTemplate.getEncrypt().setBooleanValue(Boolean.TRUE);
    118            secretEncryptionKeyTemplate.getDecrypt().setBooleanValue(Boolean.TRUE);
    119
    120            DES3SecretKey encryptionKey = (DES3SecretKey) session.generateKey(keyMechanism, secretEncryptionKeyTemplate);
    121
    122            output_.println("################################################################################");
    123
    124            output_.println("################################################################################");
    125            output_.println("encrypting data from file: " + args[2]);
    126
    127            InputStream dataInputStream = new FileInputStream(args[2]);
    128
    129            byte[] dataBuffer = new byte[1024];
    130            int bytesRead;
    131            ByteArrayOutputStream streamBuffer = new ByteArrayOutputStream();
    132
    133            // feed in all data from the input stream
    134            while ((bytesRead = dataInputStream.read(dataBuffer)) >= 0) {
    135              streamBuffer.write(dataBuffer, 0, bytesRead);
    136            }
    137            Arrays.fill(dataBuffer, (byte) 0); // ensure that no data is left in the memory
    138            streamBuffer.flush();
    139            streamBuffer.close();
    140            byte[] rawData = streamBuffer.toByteArray();
    141
    142            //be sure that your token can process the specified mechanism
    143            Mechanism encryptionMechanism = Mechanism.DES3_CBC_PAD;
    144            byte[] encryptInitializationVector = { 0, 0, 0, 0, 0, 0, 0, 0};
    145            InitializationVectorParameters encryptInitializationVectorParameters =
    146                new InitializationVectorParameters(encryptInitializationVector);
    147            encryptionMechanism.setParameters(encryptInitializationVectorParameters);
    148
    149            // initialize for encryption
    150            session.encryptInit(encryptionMechanism, encryptionKey);
    151
    152            byte[] encryptedData = session.encrypt(rawData);
    153
    154            output_.println("################################################################################");
    155
    156            output_.println("################################################################################");
    157            output_.println("trying to decrypt");
    158
    159            //Cipher des3Cipher = Cipher.getInstance("DES3/CBC/PKCS5Padding");
    160
    161            Mechanism decryptionMechanism = Mechanism.DES3_CBC_PAD;
    162            byte[] decryptInitializationVector = { 0, 0, 0, 0, 0, 0, 0, 0};
    163            InitializationVectorParameters decryptInitializationVectorParameters =
    164                new InitializationVectorParameters(decryptInitializationVector);
    165            decryptionMechanism.setParameters(decryptInitializationVectorParameters);
    166
    167            // initialize for decryption
    168            session.decryptInit(decryptionMechanism, encryptionKey);
    169
    170            byte[] decryptedData = session.decrypt(encryptedData);
    171
    172            // compare initial data and decrypted data
    173            boolean equal = false;
    174            if (rawData.length != decryptedData.length) {
    175              equal = false;
    176            } else {
    177              equal = true;
    178              for (int i=0; i < rawData.length; i++) {
    179                if (rawData[i] != decryptedData[i]) {
    180                  equal = false;
    181                  break;
    182                }
    183              }
    184            }
    185
    186            output_.println((equal) ? "successful" : "ERROR");
    187
    188            output_.println("################################################################################");
    189
    190            session.closeSession();
    191            pkcs11Module.finalize(null);
    192
    193        } catch (Throwable thr) {
    194          thr.printStackTrace();
    195        }
    196      }
    197
    198      public static void printUsage() {
    199        output_.println("Usage: EncryptDecrypt <PKCS#11 module> <user-PIN> <file to be encrypted>");
    200        output_.println(" e.g.: EncryptDecrypt pk2priv.dll password data.dat");
    201        output_.println("The given DLL must be in the search path of the system.");
    202      }
    203
    204    }