cpp_for_professor/CryptoLib93.cpp at master · JungMYEONG-jin/cpp_for_professor · GitHub

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#include <iostream>
#include <string>
#include <string_view>

#include "sha.h"
#include "hex.h"
#include "files.h"
#include "default.h"


#ifdef USE_BOOST_FILESYSTEM
# include<boost/filesystem/path.hpp>
#	include<boost/filesystem/operations.hpp>
#else
#	include<filesystem>
#	ifdef FILESYSTEM_EXPERIMENTAL
namespace fs = std::experimental::filesystem;
#	else
namespace fs = std::filesystem;
#	endif
#endif

void encrypt_file(
	fs::path const& sourcefile,
	fs::path const& destfile,
	std::string_view password)
{
	CryptoPP::FileSource source(
		sourcefile.c_str(),
		true,
		new CryptoPP::DefaultEncryptorWithMAC((CryptoPP::byte*)password.data(), password.size(),
			new CryptoPP::FileSink(
				destfile.c_str())
		)
	);
}

void encrypt_file(
	fs::path const& filepath,
	std::string_view password
)
{
	auto temp = fs::temp_directory_path() / filepath.filename();

	encrypt_file(filepath, temp, password);
	fs::remove(filepath);
	fs::rename(temp, filepath);
}


void decrypt_file(
	fs::path const& sourcefile,
	fs::path const& destfile,
	std::string_view password
)
{
	CryptoPP::FileSource source(
		sourcefile.c_str(),
		true,
		new CryptoPP::DefaultDecryptorWithMAC(
			(CryptoPP::byte*)password.data(), password.size(),
			new CryptoPP::FileSink(
				destfile.c_str())
		)
	);


}

void decrypt_file(
	fs::path const& filepath,
	std::string_view password
)
{
	auto temp = fs::temp_directory_path() / filepath.filename();

	decrypt_file(filepath, temp, password);

	fs::remove(filepath);
	fs::rename(temp, filepath);

}


int main()
{

	encrypt_file("sample.txt", "sample.txt.enc", "cppchallenger");
	decrypt_file("sample.txt.enc", "sample.txt.dec", "cppchallenger");

	encrypt_file("sample.txt", "cppchallenger");
	decrypt_file("sample.txt", "cppchallenger");


}