    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.BufferedReader;
    047    import java.io.ByteArrayOutputStream;
    048    import java.io.FileInputStream;
    049    import java.io.FileOutputStream;
    050    import java.io.InputStream;
    051    import java.io.InputStreamReader;
    052    import java.io.OutputStream;
    053    import java.io.PrintWriter;
    054    import java.security.MessageDigest;
    055    import java.util.Arrays;
    056    import java.util.List;
    057
    058    import iaik.asn1.ASN;
    059    import iaik.asn1.ASN1Object;
    060    import iaik.asn1.DerCoder;
    061    import iaik.asn1.OCTET_STRING;
    062    import iaik.asn1.ObjectID;
    063    import iaik.asn1.structures.AlgorithmID;
    064    import iaik.asn1.structures.Attribute;
    065    import iaik.asn1.structures.ChoiceOfTime;
    066    import iaik.pkcs.pkcs11.Mechanism;
    067    import iaik.pkcs.pkcs11.MechanismInfo;
    068    import iaik.pkcs.pkcs11.Module;
    069    import iaik.pkcs.pkcs11.Session;
    070    import iaik.pkcs.pkcs11.Token;
    071    import iaik.pkcs.pkcs11.objects.PrivateKey;
    072    import iaik.pkcs.pkcs11.objects.RSAPrivateKey;
    073    import iaik.pkcs.pkcs11.objects.X509PublicKeyCertificate;
    074    import iaik.pkcs.pkcs7.DigestInfo;
    075    import iaik.pkcs.pkcs7.IssuerAndSerialNumber;
    076    import iaik.pkcs.pkcs7.SignedData;
    077    import iaik.pkcs.pkcs7.SignerInfo;
    078    import iaik.x509.X509Certificate;
    079
    080
    081
    082    /**
    083     * Creates a signature on a token. The hash is calculated outside the token.
    084     * The signed data and the signature are encoded into a PKCS#7 signed data
    085     * object. This implementation just uses raw RSA.
    086     *
    087     * @author <a href="mailto:Karl.Scheibelhofer@iaik.at"> Karl Scheibelhofer </a>
    088     * @version 0.1
    089     * @invariants
    090     */
    091    public class SignPKCS7 {
    092
    093      static PrintWriter output_;
    094
    095      static BufferedReader input_;
    096
    097      static {
    098        try {
    099          //output_ = new PrintWriter(new FileWriter("GetInfo_output.txt"), true);
    100          output_ = new PrintWriter(System.out, true);
    101          input_ = new BufferedReader(new InputStreamReader(System.in));
    102        } catch (Throwable thr) {
    103          thr.printStackTrace();
    104          output_ = new PrintWriter(System.out, true);
    105          input_ = new BufferedReader(new InputStreamReader(System.in));
    106        }
    107      }
    108
    109      public static void main(String[] args) {
    110        if (args.length != 3) {
    111          printUsage();
    112          System.exit(1);
    113        }
    114
    115        try {
    116
    117          Module pkcs11Module = Module.getInstance(args[0]);
    118          pkcs11Module.initialize(null);
    119
    120          Token token = Util.selectToken(pkcs11Module, output_, input_);
    121          if (token == null) {
    122            output_.println("We have no token to proceed. Finished.");
    123            output_.flush();
    124            System.exit(0);
    125          }
    126
    127          List supportedMechanisms = Arrays.asList(token.getMechanismList());
    128          if (!supportedMechanisms.contains(Mechanism.RSA_PKCS)) {
    129            output_.print("This token does not support raw RSA signing!");
    130            output_.flush();
    131            System.exit(0);
    132          } else {
    133            MechanismInfo rsaMechanismInfo = token.getMechanismInfo(Mechanism.RSA_PKCS);
    134            if (!rsaMechanismInfo.isSign()) {
    135              output_.print("This token does not support RSA signing according to PKCS!");
    136              output_.flush();
    137              System.exit(0);
    138            }
    139          }
    140
    141          Session session = Util.openAuthorizedSession(token, Token.SessionReadWriteBehavior.RO_SESSION, output_, input_);
    142
    143          // first we search for private RSA keys that we can use for signing
    144          RSAPrivateKey privateSignatureKeyTemplate = new RSAPrivateKey();
    145          privateSignatureKeyTemplate.getSign().setBooleanValue(Boolean.TRUE);
    146
    147          KeyAndCertificate selectedSignatureKeyAndCertificate =
    148              Util.selectKeyAndCertificate(session, privateSignatureKeyTemplate, output_, input_);
    149          if (selectedSignatureKeyAndCertificate == null) {
    150            output_.println("We have no signature key to proceed. Finished.");
    151            output_.flush();
    152            System.exit(0);
    153          }
    154
    155          PrivateKey selectedSignatureKey = (PrivateKey) selectedSignatureKeyAndCertificate.getKey();
    156          X509PublicKeyCertificate pkcs11SignerCertificate = selectedSignatureKeyAndCertificate.getCertificate();
    157          X509Certificate signerCertificate = (pkcs11SignerCertificate != null)
    158                                              ? new X509Certificate(pkcs11SignerCertificate.getValue().getByteArrayValue())
    159                                              : null;
    160
    161          // here the interesting code starts
    162
    163          output_.println("################################################################################");
    164          output_.println("signing data from file: " + args[1]);
    165
    166          InputStream dataInputStream = new FileInputStream(args[1]);
    167
    168          // we do digesting outside the card, because some cards do not support on-card hashing
    169          MessageDigest digestEngine = MessageDigest.getInstance("SHA-1");
    170
    171          // we buffer the content to have it after hashing for the PKCS#7 content
    172          ByteArrayOutputStream contentBuffer = new ByteArrayOutputStream();
    173          byte[] dataBuffer = new byte[1024];
    174          byte[] helpBuffer;
    175          int bytesRead;
    176
    177          // feed all data from the input stream to the message digest
    178          while ((bytesRead = dataInputStream.read(dataBuffer)) >= 0) {
    179            // hash the data
    180            digestEngine.update(dataBuffer, 0, bytesRead);
    181            // and buffer the data
    182            contentBuffer.write(dataBuffer, 0, bytesRead);
    183          }
    184          byte[] contentHash = digestEngine.digest();
    185          contentBuffer.close();
    186
    187          // create the SignedData
    188          SignedData signedData = new SignedData(contentBuffer.toByteArray(), SignedData.IMPLICIT);
    189          // set the certificates
    190          signedData.setCertificates(new X509Certificate[] { signerCertificate });
    191
    192          // create a new SignerInfo
    193          SignerInfo signerInfo = new SignerInfo(new IssuerAndSerialNumber(signerCertificate), AlgorithmID.sha1, null);
    194
    195          // define the authenticated attributes
    196          iaik.asn1.structures.Attribute[] authenticatedAttributes = {
    197            new Attribute(ObjectID.contentType, new ASN1Object[] {ObjectID.pkcs7_data}),
    198            new Attribute(ObjectID.signingTime, new ASN1Object[] {new ChoiceOfTime().toASN1Object()}),
    199            new Attribute(ObjectID.messageDigest, new ASN1Object[] {new OCTET_STRING(contentHash)})
    200          };
    201          // set the authenticated attributes
    202          signerInfo.setAuthenticatedAttributes(authenticatedAttributes);
    203
    204          // encode the authenticated attributes, which is the data that we must sign
    205          byte[] toBeSigned = DerCoder.encode(ASN.createSetOf(authenticatedAttributes, true));
    206
    207
    208          // we do digesting outside the card, because some cards do not support on-card hashing
    209          // we can use the digest engine from above
    210          byte[] hashToBeSigned = digestEngine.digest(toBeSigned);
    211
    212          // according to PKCS#11 building the DigestInfo structure must be done off-card
    213          DigestInfo digestInfoEngine = new DigestInfo(AlgorithmID.sha1, hashToBeSigned);
    214
    215          byte[] toBeEncrypted = digestInfoEngine.toByteArray();
    216
    217
    218          // initialize for signing
    219          session.signInit(Mechanism.RSA_PKCS, selectedSignatureKey);
    220
    221          // sign the data to be signed
    222          byte[] signatureValue = session.sign(toBeEncrypted);
    223
    224          // set the signature value in the signer info
    225          signerInfo.setEncryptedDigest(signatureValue);
    226
    227          // and add the signer info object to the PKCS#7 signed data object
    228          signedData.addSignerInfo(signerInfo);
    229
    230          output_.println("Writing signature to file: " + args[2]);
    231
    232          OutputStream signatureOutput = new FileOutputStream(args[2]);
    233          signedData.writeTo(signatureOutput);
    234          signatureOutput.flush();
    235          signatureOutput.close();
    236
    237          output_.println("################################################################################");
    238
    239          session.closeSession();
    240          pkcs11Module.finalize(null);
    241
    242        } catch (Throwable thr) {
    243          thr.printStackTrace();
    244        } finally {
    245          output_.close();
    246        }
    247      }
    248
    249      public static void printUsage() {
    250        output_.println("Usage: SignPKCS7 <PKCS#11 module> <file to be signed> <PKCS#7 signed data file>");
    251        output_.println(" e.g.: SignPKCS7 pk2priv.dll data.dat signedData.p7");
    252        output_.println("The given DLL must be in the search path of the system.");
    253      }
    254
    255    }