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.ByteArrayInputStream;
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.math.BigInteger;
055 import java.security.MessageDigest;
056 import java.security.Signature;
057 import java.security.SignatureException;
058 import java.security.cert.CertificateFactory;
059 import java.security.cert.X509Certificate;
060 import java.util.Hashtable;
061
062 import iaik.asn1.structures.AlgorithmID;
063 import iaik.pkcs.pkcs11.Mechanism;
064 import iaik.pkcs.pkcs11.MechanismInfo;
065 import iaik.pkcs.pkcs11.Module;
066 import iaik.pkcs.pkcs11.Session;
067 import iaik.pkcs.pkcs11.Token;
068 import iaik.pkcs.pkcs11.TokenException;
069 import iaik.pkcs.pkcs11.objects.Key;
070 import iaik.pkcs.pkcs11.objects.Object;
071 import iaik.pkcs.pkcs11.objects.RSAPrivateKey;
072 import iaik.pkcs.pkcs11.objects.RSAPublicKey;
073 import iaik.pkcs.pkcs7.DigestInfo;
074
075
076
077 /**
078 * Creates and verifies a signature on a token. The hash is calculated outside
079 * the token. Notice that many tokens do not support verification. In this case
080 * you will get an exception when the progrom tries to verify the signature
081 * on the token.
082 *
083 * @author <a href="mailto:Karl.Scheibelhofer@iaik.at"> Karl Scheibelhofer </a>
084 * @version 0.1
085 * @invariants
086 */
087 public class SignAndVerify {
088
089 static BufferedReader input_;
090
091 static PrintWriter output_;
092
093 static {
094 try {
095 //output_ = new PrintWriter(new FileWriter("SignAndVerify_output.txt"), true);
096 output_ = new PrintWriter(System.out, true);
097 input_ = new BufferedReader(new InputStreamReader(System.in));
098 } catch (Throwable thr) {
099 thr.printStackTrace();
100 output_ = new PrintWriter(System.out, true);
101 input_ = new BufferedReader(new InputStreamReader(System.in));
102 }
103 }
104
105 public static void main(String[] args) {
106 if ((args.length != 2) && (args.length != 3)) {
107 printUsage();
108 System.exit(1);
109 }
110
111 try {
112
113 Module pkcs11Module = Module.getInstance(args[0]);
114 pkcs11Module.initialize(null);
115
116 Token token = Util.selectToken(pkcs11Module, output_, input_);
117 if (token == null) {
118 output_.println("We have no token to proceed. Finished.");
119 output_.flush();
120 System.exit(0);
121 }
122
123 // first check out what attributes of the keys we may set
124 Mechanism[] mechanisms = token.getMechanismList();
125 Hashtable supportedMechanisms = new Hashtable(mechanisms.length);
126 for (int i = 0; i < mechanisms.length; i++) {
127 supportedMechanisms.put(mechanisms[i], mechanisms[i]);
128 }
129
130 MechanismInfo signatureMechanismInfo;
131 if (supportedMechanisms.contains(Mechanism.RSA_PKCS)) {
132 signatureMechanismInfo = token.getMechanismInfo(Mechanism.RSA_PKCS);
133 } else {
134 signatureMechanismInfo = null;
135 output_.println("The token does not support mechanism RSA_PKCS. Going to exit.");
136 System.exit(0);
137 }
138
139 if ((signatureMechanismInfo == null) || !signatureMechanismInfo.isSign()) {
140 output_.println("The token does not support signing with mechanism RSA_PKCS. Going to exit.");
141 System.exit(0);
142 }
143
144 Session session = Util.openAuthorizedSession(token, Token.SessionReadWriteBehavior.RO_SESSION, output_, input_);
145
146 output_.println("################################################################################");
147 output_.println("find private signature key");
148 RSAPrivateKey templateSignatureKey = new RSAPrivateKey();
149 templateSignatureKey.getSign().setBooleanValue(Boolean.TRUE);
150
151 KeyAndCertificate selectedSignatureKeyAndCertificate =
152 Util.selectKeyAndCertificate(session, templateSignatureKey, output_, input_);
153 if (selectedSignatureKeyAndCertificate == null) {
154 output_.println("We have no signature key to proceed. Finished.");
155 output_.flush();
156 System.exit(0);
157 }
158 Key signatureKey = selectedSignatureKeyAndCertificate.getKey();
159 output_.println("################################################################################");
160
161
162 output_.println("################################################################################");
163 output_.println("signing data from file: " + args[1]);
164
165 InputStream dataInputStream = new FileInputStream(args[1]);
166
167 // we do digesting outside the card, because some cards do not support on-card hashing
168 MessageDigest digestEngine = MessageDigest.getInstance("SHA-1");
169
170 //be sure that your token can process the specified mechanism
171 Mechanism signatureMechanism = Mechanism.RSA_PKCS;
172 // initialize for signing
173 session.signInit(signatureMechanism, signatureKey);
174
175 byte[] dataBuffer = new byte[1024];
176 //byte[] helpBuffer;
177 int bytesRead;
178
179 // feed all data from the input stream to the message digest
180 while ((bytesRead = dataInputStream.read(dataBuffer)) >= 0) {
181 //helpBuffer = new byte[bytesRead]; // we need a buffer that only holds what to send for signing
182 //System.arraycopy(dataBuffer, 0, helpBuffer, 0, bytesRead);
183 //session.signUpdate(helpBuffer);
184 //Arrays.fill(helpBuffer, (byte) 0); // ensure that no data is left in the memory
185 digestEngine.update(dataBuffer, 0, bytesRead);
186 }
187 byte[] digest = digestEngine.digest();
188
189 // according to PKCS#11 building the DigestInfo structure must be done off-card
190 DigestInfo digestInfoObject = new DigestInfo(AlgorithmID.sha1, digest);
191
192 byte[] digestInfo = digestInfoObject.toByteArray();
193
194 byte[] signatureValue = session.sign(digestInfo);
195
196 //Arrays.fill(dataBuffer, (byte) 0); // ensure that no data is left in the memory
197
198 output_.println("The siganture value is: " + new BigInteger(1, signatureValue).toString(16));
199
200 if (args.length == 3) {
201 output_.println("Writing signature to file: " + args[2]);
202
203 OutputStream signatureOutput = new FileOutputStream(args[2]);
204 signatureOutput.write(signatureValue);
205 signatureOutput.flush();
206 signatureOutput.close();
207 }
208
209 output_.println("################################################################################");
210
211
212 if ((signatureMechanismInfo == null) || !signatureMechanismInfo.isVerify()) {
213 output_.println("The token does not support verification with mechanism RSA_PKCS. Going to exit.");
214 System.exit(0);
215 }
216
217 boolean verifyInSoftware;
218 output_.println("################################################################################");
219 output_.println("find public verification key");
220 RSAPublicKey templateVerificationKey = new RSAPublicKey();
221 templateVerificationKey.getVerify().setBooleanValue(Boolean.TRUE);
222 // we search for a public key with the same ID
223 templateVerificationKey.getId().setByteArrayValue(signatureKey.getId().getByteArrayValue());
224
225 session.findObjectsInit(templateVerificationKey);
226
227 Object[] foundVerificationKeyObjects = session.findObjects(1); // find first
228
229 RSAPublicKey verificationKey = null;
230 if (foundVerificationKeyObjects.length > 0) {
231 verificationKey = (RSAPublicKey) foundVerificationKeyObjects[0];
232 output_.println("________________________________________________________________________________");
233 output_.println(verificationKey);
234 output_.println("________________________________________________________________________________");
235 verifyInSoftware = false;
236 } else {
237 if (selectedSignatureKeyAndCertificate.getCertificate() != null) {
238 output_.println("No matching public key found! Will verify in software.");
239 } else {
240 output_.println("No matching public key found and no certificate found! Going to exit.");
241 System.exit(0);
242 }
243 verifyInSoftware = true;
244 }
245 session.findObjectsFinal();
246
247 output_.println("################################################################################");
248
249
250 output_.println("################################################################################");
251 if (verifyInSoftware) {
252 output_.println("verifying signature in software");
253 CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
254 byte[] encodedCertificate =
255 selectedSignatureKeyAndCertificate.getCertificate().getValue().getByteArrayValue();
256 X509Certificate certificate = (X509Certificate) certificateFactory.generateCertificate(
257 new ByteArrayInputStream(encodedCertificate));
258 Signature signatureEngine = Signature.getInstance("SHA1withRSA");
259
260 signatureEngine.initVerify(certificate.getPublicKey());
261 dataInputStream = new FileInputStream(args[1]);
262 // feed all data from the input stream to the message digest
263 while ((bytesRead = dataInputStream.read(dataBuffer)) >= 0) {
264 //helpBuffer = new byte[bytesRead]; // we need a buffer that only holds what to send for signing
265 //System.arraycopy(dataBuffer, 0, helpBuffer, 0, bytesRead);
266 //session.signUpdate(helpBuffer);
267 //Arrays.fill(helpBuffer, (byte) 0); // ensure that no data is left in the memory
268 signatureEngine.update(dataBuffer, 0, bytesRead);
269 }
270
271 try {
272 if (signatureEngine.verify(signatureValue)) {
273 output_.println("Verified the signature successfully");
274 } else {
275 output_.println("Signature Invalid." );
276 }
277 } catch (SignatureException ex) {
278 output_.println("Verification FAILED: " + ex.getMessage());
279 }
280 } else {
281 output_.println("verifying signature on token");
282
283 dataInputStream = new FileInputStream(args[1]);
284
285 // feed all data from the input stream to the message digest
286 while ((bytesRead = dataInputStream.read(dataBuffer)) >= 0) {
287 //helpBuffer = new byte[bytesRead]; // we need a buffer that only holds what to send for signing
288 //System.arraycopy(dataBuffer, 0, helpBuffer, 0, bytesRead);
289 //session.signUpdate(helpBuffer);
290 //Arrays.fill(helpBuffer, (byte) 0); // ensure that no data is left in the memory
291 digestEngine.update(dataBuffer, 0, bytesRead);
292 }
293 digest = digestEngine.digest();
294
295 // according to PKCS#11 building the DigestInfo structure must be done off-card
296 digestInfoObject = new DigestInfo(AlgorithmID.sha1, digest);
297
298 digestInfo = digestInfoObject.toByteArray();
299
300 //be sure that your token can process the specified mechanism
301 Mechanism verificationMechanism = Mechanism.RSA_PKCS;
302 // initialize for signing
303 session.verifyInit(verificationMechanism, verificationKey);
304
305 try {
306 session.verify(digestInfo, signatureValue); // throws an exception upon unsuccessful verification
307 output_.println("Verified the signature successfully");
308 } catch (TokenException ex) {
309 output_.println("Verification FAILED: " + ex.getMessage());
310 }
311 }
312
313 output_.println("################################################################################");
314
315 session.closeSession();
316 pkcs11Module.finalize(null);
317
318 } catch (Throwable thr) {
319 thr.printStackTrace();
320 } finally {
321 output_.close();
322 }
323 }
324
325 public static void printUsage() {
326 output_.println("Usage: SignAndVerify <PKCS#11 module> <file to be signed> [<signature value file>]");
327 output_.println(" e.g.: SignAndVerify pk2priv.dll data.dat signature.bin");
328 output_.println("The given DLL must be in the search path of the system.");
329 }
330
331 }