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SlunkCrypt/examples/example_encrypt.cpp

114 lines
3.2 KiB
C++

/******************************************************************************/
/* SlunkCrypt, by LoRd_MuldeR <MuldeR2@GMX.de> */
/* This work has been released under the CC0 1.0 Universal license! */
/******************************************************************************/
//SlunkCrypt API
#include <slunkcrypt.hpp>
//CRT
#include <cstdlib>
#include <iostream>
#include <fstream>
//Example password
static std::string EXAMPLE_PASSWORD("cMRe5E5D)'!2?5]QDlCQ4tBb");
//Const
#define BUFF_SIZE 4096U
static int encrypt_main(int argc, char *argv[])
{
std::cerr << "SlunkCrypt encrypt sample [" << __DATE__ << "]" << std::endl;
std::cerr << "using libSlunkCrypt v" << SLUNKCRYPT_VERSION_MAJOR << '.' << SLUNKCRYPT_VERSION_MINOR << '.' << SLUNKCRYPT_VERSION_PATCH << '\n' << std::endl;
if (argc < 3)
{
std::cerr << "Usage:\n encrypt.exe <plaintext.txt> <ciphertext.enc>\n" << std::endl;
return -1;
}
// -----------------------------------------------------------
// Open input/output files
// -----------------------------------------------------------
std::ifstream file_src(argv[1], std::ios::binary);
if (!file_src.is_open())
{
std::cerr << "Error: Failed to open input file for reading!" << std::endl;
return -1;
}
std::ofstream file_dst(argv[2], std::ios::binary);
if (!file_dst.is_open())
{
std::cerr << "Error: Failed to open output file for writing!" << std::endl;
return -1;
}
// -----------------------------------------------------------
// Initialize the SlunkCryptEncr instance
// -----------------------------------------------------------
std::cerr << "Initializing key, please wait... " << std::flush;
uint8_t buffer[BUFF_SIZE];
slunkcrypt::Encryptor slunk_encrypt(EXAMPLE_PASSWORD);
std::cerr << "done.\nSlunk-encrypting the file contents, please wait... " << std::flush;
// -----------------------------------------------------------
// Encryption loop
// -----------------------------------------------------------
file_src.exceptions(std::ifstream::badbit);
file_dst.exceptions(std::ifstream::failbit | std::ifstream::badbit);
try
{
while (file_src.good())
{
file_src.read(reinterpret_cast<char*>(buffer), BUFF_SIZE);
const std::streamsize count = file_src.gcount();
if (count > 0)
{
if (!slunk_encrypt.inplace(buffer, (size_t)count))
{
std::cerr << "failed!\n\nError: SlunkCrypt encryption has failed!" << std::endl;
return -1;
}
file_dst.write(reinterpret_cast<char*>(buffer), count);
}
}
}
catch (std::ios_base::failure e)
{
std::cerr << "failed!\n\nI/O Error: \"" << e.code().message() << "\" [Code: " << e.code().value() << "]\n" << std::endl;
return -1;
}
// -----------------------------------------------------------
// Clean up
// -----------------------------------------------------------
std::cerr << "done.\n\nNonce: " << std::hex << std::uppercase << slunk_encrypt.get_nonce() << '\n' << std::endl;
file_src.close();
file_dst.close();
return 0;
}
int main(int argc, char *argv[])
{
try
{
return encrypt_main(argc, argv);
}
catch (std::exception e)
{
std::cerr << "\n\nException: \"" << e.what() << "\"\n" << std::endl;
return -1;
}
}