00001 /* 00002 Copyright (C) 2003 Justin Karneges <justin@affinix.com> 00003 Copyright (C) 2005 Brad Hards <bradh@frogmouth.net> 00004 00005 Permission is hereby granted, free of charge, to any person obtaining a copy 00006 of this software and associated documentation files (the "Software"), to deal 00007 in the Software without restriction, including without limitation the rights 00008 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 00009 copies of the Software, and to permit persons to whom the Software is 00010 furnished to do so, subject to the following conditions: 00011 00012 The above copyright notice and this permission notice shall be included in 00013 all copies or substantial portions of the Software. 00014 00015 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00016 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00017 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 00018 AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 00019 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 00020 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00021 */ 00022 00023 00024 #include <QtCrypto> 00025 00026 #include <QCoreApplication> 00027 00028 #include <iostream> 00029 00030 00031 int main(int argc, char** argv) 00032 { 00033 // the Initializer object sets things up, and 00034 // also does cleanup when it goes out of scope 00035 QCA::Initializer init; 00036 00037 QCoreApplication app(argc, argv); 00038 00039 // We need to ensure that we have certificate handling support 00040 if ( !QCA::isSupported( "cert" ) ) { 00041 std::cout << "Sorry, no PKI certificate support" << std::endl; 00042 return 1; 00043 } 00044 00045 // Read in a private key 00046 QCA::PrivateKey privKey; 00047 QCA::ConvertResult convRes; 00048 QCA::SecureArray passPhrase = "start"; 00049 privKey = QCA::PrivateKey::fromPEMFile( "Userkey.pem", passPhrase, &convRes ); 00050 if ( convRes != QCA::ConvertGood ) { 00051 std::cout << "Sorry, could not import Private Key" << std::endl; 00052 return 1; 00053 } 00054 00055 // Read in a matching public key cert 00056 // you could also build this using the fromPEMFile() method 00057 QCA::Certificate pubCert( "User.pem" ); 00058 if ( pubCert.isNull() ) { 00059 std::cout << "Sorry, could not import public key certificate" << std::endl; 00060 return 1; 00061 } 00062 // We are building the certificate into a SecureMessageKey object, via a 00063 // CertificateChain 00064 QCA::SecureMessageKey secMsgKey; 00065 QCA::CertificateChain chain; 00066 chain += pubCert; 00067 secMsgKey.setX509CertificateChain( chain ); 00068 00069 // build up a SecureMessage object, based on our public key certificate 00070 QCA::CMS cms; 00071 QCA::SecureMessage msg(&cms); 00072 msg.setRecipient(secMsgKey); 00073 00074 // Some plain text - we use the first command line argument if provided 00075 QByteArray plainText = (argc >= 2) ? argv[1] : "What do ya want for nuthin'"; 00076 00077 // Now use the SecureMessage object to encrypt the plain text. 00078 msg.startEncrypt(); 00079 msg.update(plainText); 00080 msg.end(); 00081 // I think it is reasonable to wait for 1 second for this 00082 msg.waitForFinished(1000); 00083 00084 // check to see if it worked 00085 if(!msg.success()) 00086 { 00087 std::cout << "Error encrypting: " << msg.errorCode() << std::endl; 00088 return 1; 00089 } 00090 00091 // get the result 00092 QCA::SecureArray cipherText = msg.read(); 00093 QCA::Base64 enc; 00094 std::cout << plainText.data() << " encrypts to (in base 64): "; 00095 std::cout << qPrintable( enc.arrayToString( cipherText ) ) << std::endl; 00096 00097 // Show we can decrypt it with the private key 00098 if ( !privKey.canDecrypt() ) { 00099 std::cout << "Private key cannot be used to decrypt" << std::endl; 00100 return 1; 00101 } 00102 QCA::SecureArray plainTextResult; 00103 if ( 0 == privKey.decrypt(cipherText, &plainTextResult, QCA::EME_PKCS1_OAEP ) ) { 00104 std::cout << "Decryption process failed" << std::endl; 00105 return 1; 00106 } 00107 00108 std::cout << qPrintable( enc.arrayToString( cipherText ) ); 00109 std::cout << " (in base 64) decrypts to: "; 00110 std::cout << plainTextResult.data() << std::endl; 00111 00112 return 0; 00113 } 00114