[fafd156] | 1 | #include <QCoreApplication> |
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| 2 | |
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| 3 | #include <QTime> |
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| 4 | #include <QElapsedTimer> |
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| 5 | #include <QFile> |
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| 6 | #include <QTextStream> |
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| 7 | |
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| 8 | #include <iostream> |
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| 9 | |
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| 10 | #include "crypto++/rsa.h" |
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| 11 | #include "crypto++/elgamal.h" |
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| 12 | #include "crypto++/osrng.h" |
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| 13 | #include <crypto++/files.h> |
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| 14 | |
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| 15 | |
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| 16 | |
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| 17 | /** |
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| 18 | * Programa de Cryptopp para realizar estimaciones de ejecuciones del |
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| 19 | * algoritmo RSA |
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| 20 | * |
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| 21 | * https://www.cryptopp.com/wiki/RSA_Cryptography |
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| 22 | * |
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| 23 | * |
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| 24 | * Es necesario instalar los siguientes paquetes: |
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| 25 | * libcrypto++9 y libcrypto++-dev |
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| 26 | * |
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| 27 | */ |
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| 28 | |
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| 29 | using namespace CryptoPP; |
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| 30 | |
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| 31 | int main(int argc, char *argv[]) |
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| 32 | { |
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| 33 | QCoreApplication a(argc, argv); |
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| 34 | //return a.exec(); |
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| 35 | |
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| 36 | |
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| 37 | /////////////////////////////////////// |
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| 38 | // Pseudo Random Number Generator |
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| 39 | AutoSeededRandomPool rng; |
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| 40 | |
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| 41 | /////////////////////////////////////// |
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| 42 | // Generate Parameters |
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| 43 | //InvertibleRSAFunction params; |
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| 44 | |
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| 45 | //QTime timer; |
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| 46 | QElapsedTimer timer; |
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| 47 | |
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| 48 | // prefijo del nombre del archivo con el texto a cifrar |
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| 49 | QString messageFile = "message"; |
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| 50 | |
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| 51 | // iterar por el número de archivos (10) |
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| 52 | for (int i = 1; i <= 2; i++) |
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| 53 | { |
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| 54 | messageFile.append(QString::number(i)); |
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| 55 | |
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| 56 | qDebug("generar archivo..."); |
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| 57 | // generar registros en archivo de texto |
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| 58 | QString fileName = "registro-rsa-"; |
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| 59 | fileName.append(messageFile+"-"); |
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| 60 | fileName.append(QDateTime::currentDateTime().toString("dd.MM.yy.hh.mm.ss")); |
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| 61 | fileName.append(".txt"); |
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| 62 | |
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| 63 | messageFile.append(".txt"); |
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| 64 | |
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[5ffe8ce] | 65 | |
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| 66 | //CryptoPP::FileSource file( qPrintable(messageFile), true, new StringSink( s ) ); |
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| 67 | QFile readFile(messageFile); |
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| 68 | assert (readFile.open(QFile::ReadOnly | QFile::Text)); |
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| 69 | QTextStream in(&readFile); |
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| 70 | |
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| 71 | std::string text = in.readAll().toStdString(); |
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[fafd156] | 72 | |
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| 73 | //std::cout << s ;//<< std::endl; |
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| 74 | //std::cout << s.size() << std::endl; |
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| 75 | |
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| 76 | // archivo de salida de resultados |
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| 77 | QFile registerFile(fileName); |
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| 78 | if (registerFile.open(QFile::WriteOnly)) |
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| 79 | { |
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| 80 | // flujo para el archivo de salida de resultados |
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| 81 | QTextStream outFile(®isterFile); |
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| 82 | |
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| 83 | |
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| 84 | // linea que mantiene los valores de tiempo |
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| 85 | QString line; |
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| 86 | |
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| 87 | // iterar 50 veces el proceso de cifrado y descifrado del texto |
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| 88 | for (int j = 0; j < 50; j++) |
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| 89 | { |
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| 90 | |
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| 91 | qDebug("*************************************************"); |
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| 92 | InvertibleRSAFunction params; |
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| 93 | |
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| 94 | timer.start(); |
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| 95 | params.GenerateRandomWithKeySize(rng, 4096); |
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| 96 | |
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| 97 | int runtime = timer.elapsed(); //gets the runtime in ms |
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| 98 | qDebug(qPrintable("key generation: "+QString::number(runtime)+" ms")); |
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| 99 | |
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| 100 | line.append(QString::number(runtime)); |
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| 101 | line.append(" "); |
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| 102 | |
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| 103 | /////////////////////////////////////// |
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| 104 | // Create Keys |
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| 105 | RSA::PrivateKey privateKey(params); |
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| 106 | RSA::PublicKey publicKey(params); |
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| 107 | |
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[5ffe8ce] | 108 | SecByteBlock plaintext( (const unsigned char *) text.data(), text.size() ); |
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[fafd156] | 109 | |
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| 110 | |
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| 111 | //////////////////////////////////////////////// |
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| 112 | // Encrypt |
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| 113 | RSAES_OAEP_SHA_Encryptor encryptor( publicKey ); |
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| 114 | |
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| 115 | // Now that there is a concrete object, we can validate |
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| 116 | assert( 0 != encryptor.FixedMaxPlaintextLength() ); |
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| 117 | |
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| 118 | //qDebug("encryptor.FixedMaxPlaintextLength(): %zu", encryptor.FixedMaxPlaintextLength()); |
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| 119 | |
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| 120 | // vale la pena leer la siguiente pregunta: |
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| 121 | // https://stackoverflow.com/questions/2033809/im-using-crypto-for-rsa-encryption-my-plain-text-exceeds-fixedmaxplaintextle |
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| 122 | // |
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| 123 | // para RSA mas de 470 bytes hace que el asser que sigue falle |
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| 124 | assert( plaintext.size() <= encryptor.FixedMaxPlaintextLength() ); |
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| 125 | |
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| 126 | // Create cipher text space |
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| 127 | size_t ecl = encryptor.CiphertextLength( plaintext.size() ); |
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| 128 | assert( 0 != ecl ); |
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| 129 | SecByteBlock ciphertext( ecl ); |
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| 130 | |
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| 131 | timer.start(); |
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| 132 | encryptor.Encrypt( rng, plaintext, plaintext.size(), ciphertext ); |
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| 133 | runtime = timer.elapsed(); //gets the runtime in ms |
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| 134 | qDebug(qPrintable("RSA encryption time: "+QString::number(runtime)+" ms")); |
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| 135 | |
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| 136 | line.append(QString::number(runtime)); |
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| 137 | line.append(" "); |
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| 138 | |
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| 139 | |
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| 140 | //////////////////////////////////////////////// |
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| 141 | // Decrypt |
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| 142 | RSAES_OAEP_SHA_Decryptor decryptor( privateKey ); |
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| 143 | |
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| 144 | // Now that there is a concrete object, we can check sizes |
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| 145 | assert( 0 != decryptor.FixedCiphertextLength() ); |
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| 146 | assert( ciphertext.size() <= decryptor.FixedCiphertextLength() ); |
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| 147 | |
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| 148 | // Create recovered text space |
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| 149 | size_t dpl = decryptor.MaxPlaintextLength( ciphertext.size() ); |
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| 150 | assert( 0 != dpl ); |
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| 151 | SecByteBlock recovered( dpl ); |
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| 152 | |
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| 153 | timer.start(); |
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| 154 | DecodingResult result = decryptor.Decrypt( rng, ciphertext, ciphertext.size(), recovered ); |
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| 155 | runtime = timer.elapsed(); //gets the runtime in ms |
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| 156 | qDebug(qPrintable("RSA decryption time: "+QString::number(runtime)+" ms")); |
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| 157 | |
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| 158 | line.append(QString::number(runtime)); |
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| 159 | line.append(" "); |
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| 160 | |
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| 161 | // More sanity checks |
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| 162 | assert( result.isValidCoding ); |
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| 163 | assert( result.messageLength <= decryptor.MaxPlaintextLength( ciphertext.size() ) ); |
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| 164 | |
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| 165 | // At this point, we can set the size of the recovered |
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| 166 | // data. Until decryption occurs (successfully), we |
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| 167 | // only know its maximum size |
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| 168 | recovered.resize( result.messageLength ); |
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| 169 | |
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| 170 | // SecByteBlock is overloaded for proper results below |
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| 171 | assert( plaintext == recovered ); |
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| 172 | |
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| 173 | std::cout << "Recovered plain text" << std::endl; |
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| 174 | |
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| 175 | |
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| 176 | outFile << line << endl; |
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| 177 | line = ""; |
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| 178 | |
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| 179 | |
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| 180 | } |
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| 181 | messageFile = "message"; |
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| 182 | } |
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| 183 | |
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| 184 | } |
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| 185 | |
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| 186 | qDebug("salida"); |
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| 187 | } |
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