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 }