diff options
Diffstat (limited to 'utils/file/cxx/aes_decrypt_bmp.cpp')
-rw-r--r-- | utils/file/cxx/aes_decrypt_bmp.cpp | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/utils/file/cxx/aes_decrypt_bmp.cpp b/utils/file/cxx/aes_decrypt_bmp.cpp deleted file mode 100644 index 85dffe5..0000000 --- a/utils/file/cxx/aes_decrypt_bmp.cpp +++ /dev/null @@ -1,191 +0,0 @@ -/** - * \file - * \author Egor Tensin <Egor.Tensin@gmail.com> - * \date 2015 - * \copyright This file is licensed under the terms of the MIT License. - * See LICENSE.txt for details. - */ - -#include "aes_common.hpp" - -#include <aesni/all.h> - -#include <aesnixx/all.hpp> - -#include <boost/program_options.hpp> - -#include <cstdlib> -#include <cstring> - -#include <exception> -#include <fstream> -#include <iostream> -#include <string> -#include <utility> -#include <vector> - -#include <Windows.h> - -namespace -{ - std::ifstream::pos_type get_file_size(const std::string& path) - { - std::ifstream ifs; - ifs.exceptions(std::ifstream::badbit | std::ifstream::failbit); - ifs.open(path, std::ifstream::binary | std::ifstream::ate); - return ifs.tellg(); - } - - std::vector<char> read_file(const std::string& path) - { - const auto size = static_cast<std::size_t>(get_file_size(path)); - - std::ifstream ifs; - ifs.exceptions(std::ifstream::badbit | std::ifstream::failbit); - ifs.open(path, std::ifstream::binary); - - std::vector<char> src_buf; - src_buf.reserve(size); - src_buf.assign(std::istreambuf_iterator<char>(ifs), - std::istreambuf_iterator<char>()); - return src_buf; - } - - void write_file(const std::string& path, const std::vector<char>& src) - { - std::ofstream ofs; - ofs.exceptions(std::ofstream::badbit | std::ofstream::failbit); - ofs.open(path, std::ofstream::binary); - ofs.write(src.data(), src.size()); - } -} - -int main(int argc, char** argv) -{ - try - { - CommandLineParser cmd_parser("aes_decrypt_bmp.exe"); - - if (!cmd_parser.parse_options(argc, argv)) - return 0; - - auto args = cmd_parser.get_args(); - - if (args.empty()) - { - cmd_parser.print_usage(); - return 1; - } - - AesNI_BoxAlgorithmParams algorithm_params; - - switch (cmd_parser.get_algorithm()) - { - case AESNI_AES128: - aesni::aes::from_string(algorithm_params.aes128_key, args.front()); - break; - - case AESNI_AES192: - aesni::aes::from_string(algorithm_params.aes192_key, args.front()); - break; - - case AESNI_AES256: - aesni::aes::from_string(algorithm_params.aes256_key, args.front()); - break; - } - - args.pop_front(); - - AesNI_BoxBlock iv; - AesNI_BoxBlock* iv_ptr = nullptr; - - switch (cmd_parser.get_mode()) - { - case AESNI_ECB: - break; - - case AESNI_CBC: - case AESNI_CFB: - case AESNI_OFB: - case AESNI_CTR: - if (args.empty()) - { - cmd_parser.print_usage(); - return 1; - } - aesni::aes::from_string(iv.aes_block, args.front()); - iv_ptr = &iv; - args.pop_front(); - break; - } - - if (args.size() != 2) - { - cmd_parser.print_usage(); - return 1; - } - - const auto src_path = args[0]; - const auto dest_path = args[1]; - - const auto src_buf = read_file(src_path); - - const auto bmp_header = reinterpret_cast<const BITMAPFILEHEADER*>(src_buf.data()); - - const auto header_size = bmp_header->bfOffBits; - const auto cipherpixels = src_buf.data() + header_size; - const auto cipherpixels_size = src_buf.size() - header_size; - - AesNI_Box box; - - aesni_box_init( - &box, - cmd_parser.get_algorithm(), - &algorithm_params, - cmd_parser.get_mode(), - iv_ptr, - aesni::ErrorDetailsThrowsInDestructor()); - - std::size_t pixels_size; - - aesni_box_decrypt_buffer( - &box, - cipherpixels, - cipherpixels_size, - nullptr, - &pixels_size, - aesni::ErrorDetailsThrowsInDestructor()); - - std::vector<char> dest_buf; - dest_buf.resize(header_size + pixels_size); - std::memcpy(dest_buf.data(), src_buf.data(), header_size); - - aesni_box_decrypt_buffer( - &box, - cipherpixels, - cipherpixels_size, - dest_buf.data() + header_size, - &pixels_size, - aesni::ErrorDetailsThrowsInDestructor()); - - dest_buf.resize(header_size + pixels_size); - write_file(dest_path, dest_buf); - - return 0; - } - catch (const boost::program_options::error& e) - { - std::cerr << "Usage error: " << e.what() << "\n"; - return 1; - } - catch (const aesni::Error& e) - { - std::cerr << e; - return 1; - } - catch (const std::exception& e) - { - std::cerr << e.what() << "\n"; - return 1; - } -} |