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.FileInputStream;
048 import java.io.FileOutputStream;
049 import java.io.InputStream;
050 import java.io.InputStreamReader;
051 import java.io.OutputStream;
052 import java.io.PrintWriter;
053 import java.math.BigInteger;
054 import java.util.Arrays;
055 import java.util.HashSet;
056
057 import iaik.pkcs.pkcs11.Mechanism;
058 import iaik.pkcs.pkcs11.MechanismInfo;
059 import iaik.pkcs.pkcs11.Module;
060 import iaik.pkcs.pkcs11.Session;
061 import iaik.pkcs.pkcs11.Token;
062 import iaik.pkcs.pkcs11.TokenException;
063 import iaik.pkcs.pkcs11.objects.DSAPrivateKey;
064 import iaik.pkcs.pkcs11.objects.DSAPublicKey;
065 import iaik.pkcs.pkcs11.objects.Key;
066 import iaik.pkcs.pkcs11.objects.Object;
067
068
069
070 /**
071 * Creates and verifies a signature on a token. The hash is calculated outside
072 * the token. Notice that many tokens do not support verification. In this case
073 * you will get an exception when the progrom tries to verify the signature
074 * on the token.
075 *
076 * @author <a href="mailto:Karl.Scheibelhofer@iaik.at"> Karl Scheibelhofer </a>
077 * @version 0.1
078 * @invariants
079 */
080 public class DSASignAndVerify {
081
082 static BufferedReader input_;
083
084 static PrintWriter output_;
085
086 static {
087 try {
088 //output_ = new PrintWriter(new FileWriter("SignAndVerify_output.txt"), true);
089 output_ = new PrintWriter(System.out, true);
090 input_ = new BufferedReader(new InputStreamReader(System.in));
091 } catch (Throwable thr) {
092 thr.printStackTrace();
093 output_ = new PrintWriter(System.out, true);
094 input_ = new BufferedReader(new InputStreamReader(System.in));
095 }
096 }
097
098 public static void main(String[] args) {
099 if ((args.length != 2) && (args.length != 3)) {
100 printUsage();
101 System.exit(1);
102 }
103
104 try {
105
106 Module pkcs11Module = Module.getInstance(args[0]);
107 pkcs11Module.initialize(null);
108
109 Token token = Util.selectToken(pkcs11Module, output_, input_);
110 if (token == null) {
111 output_.println("We have no token to proceed. Finished.");
112 output_.flush();
113 System.exit(0);
114 }
115
116 // first check out what attributes of the keys we may set
117 HashSet supportedMechanisms = new HashSet(Arrays.asList(token.getMechanismList()));
118
119 MechanismInfo signatureMechanismInfo;
120 if (supportedMechanisms.contains(Mechanism.DSA_SHA1)) {
121 signatureMechanismInfo = token.getMechanismInfo(Mechanism.DSA_SHA1);
122 } else {
123 signatureMechanismInfo = null;
124 output_.println("The token does not support mechanism DSA_SHA1. Going to exit.");
125 System.exit(0);
126 }
127
128 if ((signatureMechanismInfo == null) || !signatureMechanismInfo.isSign()) {
129 output_.println("The token does not support signing with mechanism DSA_SHA1. Going to exit.");
130 System.exit(0);
131 }
132
133 Session session = Util.openAuthorizedSession(token, Token.SessionReadWriteBehavior.RO_SESSION, output_, input_);
134
135 output_.println("################################################################################");
136 output_.println("find private signature key");
137 DSAPrivateKey templateSignatureKey = new DSAPrivateKey();
138 templateSignatureKey.getSign().setBooleanValue(Boolean.TRUE);
139
140 KeyAndCertificate selectedSignatureKeyAndCertificate =
141 Util.selectKeyAndCertificate(session, templateSignatureKey, output_, input_);
142 if (selectedSignatureKeyAndCertificate == null) {
143 output_.println("We have no signature key to proceed. Finished.");
144 output_.flush();
145 System.exit(0);
146 }
147 Key signatureKey = selectedSignatureKeyAndCertificate.getKey();
148 output_.println("################################################################################");
149
150
151 output_.println("################################################################################");
152 output_.println("signing data from file: " + args[1]);
153
154 InputStream dataInputStream = new FileInputStream(args[1]);
155
156 //be sure that your token can process the specified mechanism
157 Mechanism signatureMechanism = Mechanism.DSA_SHA1;
158 // initialize for signing
159 session.signInit(signatureMechanism, signatureKey);
160
161 byte[] dataBuffer = new byte[1024];
162 byte[] helpBuffer;
163 int bytesRead;
164
165 // feed all data from the input stream to the message digest
166 while ((bytesRead = dataInputStream.read(dataBuffer)) >= 0) {
167 helpBuffer = new byte[bytesRead]; // we need a buffer that only holds what to send for signing
168 System.arraycopy(dataBuffer, 0, helpBuffer, 0, bytesRead);
169 session.signUpdate(helpBuffer);
170 Arrays.fill(helpBuffer, (byte) 0); // ensure that no data is left in the memory
171 }
172
173 byte[] signatureValue = session.signFinal();
174
175 Arrays.fill(dataBuffer, (byte) 0); // ensure that no data is left in the memory
176
177 output_.println("The siganture value is: " + new BigInteger(1, signatureValue).toString(16));
178
179 if (args.length == 3) {
180 output_.println("Writing signature to file: " + args[2]);
181
182 OutputStream signatureOutput = new FileOutputStream(args[2]);
183 signatureOutput.write(signatureValue);
184 signatureOutput.flush();
185 signatureOutput.close();
186 }
187
188 output_.println("################################################################################");
189
190
191 if ((signatureMechanismInfo == null) || !signatureMechanismInfo.isVerify()) {
192 output_.println("The token does not support verification with mechanism RSA_PKCS. Going to exit.");
193 System.exit(0);
194 }
195
196 output_.println("################################################################################");
197 output_.println("find public verification key");
198 DSAPublicKey templateVerificationKey = new DSAPublicKey();
199 templateVerificationKey.getVerify().setBooleanValue(Boolean.TRUE);
200 // we search for a public key with the same ID
201 templateVerificationKey.getId().setByteArrayValue(signatureKey.getId().getByteArrayValue());
202
203 session.findObjectsInit(templateVerificationKey);
204
205 Object[] foundVerificationKeyObjects = session.findObjects(1); // find first
206
207 DSAPublicKey verificationKey = null;
208 if (foundVerificationKeyObjects.length > 0) {
209 verificationKey = (DSAPublicKey) foundVerificationKeyObjects[0];
210 output_.println("________________________________________________________________________________");
211 output_.println(verificationKey);
212 output_.println("________________________________________________________________________________");
213 } else {
214 output_.println("No matching public key found!");
215 System.exit(0);
216 }
217 session.findObjectsFinal();
218
219 output_.println("################################################################################");
220
221
222 output_.println("################################################################################");
223 output_.println("verifying signature");
224
225 dataInputStream = new FileInputStream(args[1]);
226
227 // feed all data from the input stream to the message digest
228 while ((bytesRead = dataInputStream.read(dataBuffer)) >= 0) {
229 helpBuffer = new byte[bytesRead]; // we need a buffer that only holds what to send for signing
230 System.arraycopy(dataBuffer, 0, helpBuffer, 0, bytesRead);
231 session.signUpdate(helpBuffer);
232 Arrays.fill(helpBuffer, (byte) 0); // ensure that no data is left in the memory
233 }
234
235 //be sure that your token can process the specified mechanism
236 Mechanism verificationMechanism = Mechanism.DSA_SHA1;
237 // initialize for signing
238 session.verifyInit(verificationMechanism, verificationKey);
239
240 try {
241 session.verifyFinal(signatureValue); // throws an exception upon unsuccessful verification
242 output_.println("Verified the signature successfully");
243 } catch (TokenException ex) {
244 output_.println("Verification FAILED: " + ex.getMessage());
245 }
246
247 output_.println("################################################################################");
248
249
250 session.closeSession();
251 pkcs11Module.finalize(null);
252
253 } catch (Throwable thr) {
254 thr.printStackTrace();
255 } finally {
256 output_.close();
257 }
258 }
259
260 public static void printUsage() {
261 output_.println("Usage: DSASignAndVerify <PKCS#11 module> <file to be signed> [<signature value file>]");
262 output_.println(" e.g.: DSASignAndVerify pk2priv.dll data.dat signature.bin");
263 output_.println("The given DLL must be in the search path of the system.");
264 }
265
266 }