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 }