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// Copyright (c) 2015 Egor Tensin <Egor.Tensin@gmail.com>
// This file is part of the "AES tools" project.
// For details, see https://github.com/egor-tensin/aes-tools.
// Distributed under the MIT License.
#include "helpers/bmp.hpp"
#include "helpers/cmd_parser_file.hpp"
#include "helpers/file.hpp"
#include <aesxx/all.hpp>
#include <boost/program_options.hpp>
#include <exception>
#include <format>
#include <iostream>
#include <string>
namespace {
void encrypt_bmp(
aes::Box& box,
const std::string& plaintext_path,
const std::string& ciphertext_path
) {
BmpFile bmp{file::read(plaintext_path)};
bmp.replace_pixels(box.encrypt_buffer(bmp.get_pixels(), bmp.get_pixels_size()));
file::write(ciphertext_path, bmp.get_buffer(), bmp.get_size());
}
void encrypt_bmp(const FileSettings& settings) {
const auto algorithm = settings.get_algorithm();
const auto mode = settings.get_mode();
aes::Box::Key key;
aes::Box::parse_key(key, algorithm, settings.get_key());
if (settings.has_iv()) {
aes::Box::Block iv;
aes::Box::parse_block(iv, algorithm, settings.get_iv());
aes::Box box{algorithm, key, mode, iv};
encrypt_bmp(box, settings.get_input_path(), settings.get_output_path());
} else {
aes::Box box{algorithm, key};
encrypt_bmp(box, settings.get_input_path(), settings.get_output_path());
}
}
} // namespace
int main(int argc, char** argv) {
try {
FileSettings settings{argv[0]};
try {
settings.parse(argc, argv);
} catch (const boost::program_options::error& e) {
settings.usage_error(e);
return 1;
}
if (settings.exit_with_usage()) {
settings.usage();
return 0;
}
encrypt_bmp(settings);
} catch (const aes::Error& e) {
std::cerr << e;
return 1;
} catch (const std::exception& e) {
std::cerr << std::format("{}\n", e.what());
return 1;
}
return 0;
}
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