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/**
* Copyright (C) 2021 Saturneric
*
* This file is part of GpgFrontend.
*
* GpgFrontend is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GpgFrontend is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GpgFrontend. If not, see <https://www.gnu.org/licenses/>.
*
* The initial version of the source code is inherited from
* the gpg4usb project, which is under GPL-3.0-or-later.
*
* All the source code of GpgFrontend was modified and released by
* Saturneric<[email protected]> starting on May 12, 2021.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifndef GPGFRONTEND_KEYPACKAGEOPERATOR_H
#define GPGFRONTEND_KEYPACKAGEOPERATOR_H
#include "core/GpgFrontendCore.h"
#include "core/function/gpg/GpgKeyImportExporter.h"
namespace GpgFrontend {
/**
* @brief give the possibility to import or export a key package
*
*/
class KeyPackageOperator {
public:
/**
* @brief generate passphrase for key package and save it to file
*
* @param phrase_path path to passphrase file
* @param phrase passphrase generated
* @return true if passphrase was generated and saved
* @return false if passphrase was not generated and saved
*/
static bool GeneratePassphrase(const std::filesystem::path &phrase_path,
std::string &phrase);
/**
* @brief generate the name of the key package
*
* @return std::string name of the key package
*/
static std::string GenerateKeyPackageName();
/**
* @brief generate key package
*
* @param key_package_path path to key package
* @param key_package_name name of the key package
* @param key_ids key ids to export
* @param phrase passphrase to encrypt key package
* @param secret true if secret key should be exported
* @return true if key package was generated
* @return false if key package was not generated
*/
static bool GenerateKeyPackage(const std::filesystem::path &key_package_path,
const std::string &key_package_name,
KeyIdArgsListPtr &key_ids, std::string &phrase,
bool secret);
/**
* @brief import key package
*
* @param key_package_path path to key package
* @param phrase_path path to passphrase file
* @param import_info import info
* @return true if key package was imported
* @return false if key package was not imported
*/
static bool ImportKeyPackage(const std::filesystem::path &key_package_path,
const std::filesystem::path &phrase_path,
GpgFrontend::GpgImportInformation &import_info);
private:
/**
* @brief genearte passphrase
*
* @param len length of the passphrase
* @return std::string passphrase
*/
static std::string generate_passphrase(const int len) {
std::random_device rd_; ///< Random device
auto mt_ = std::mt19937(rd_()); ///< Mersenne twister
std::uniform_int_distribution<int> dist(999, 99999);
static const char alphanum[] = "0123456789"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz";
std::string tmp_str;
tmp_str.reserve(len);
for (int i = 0; i < len; ++i) {
tmp_str += alphanum[dist(mt_) % (sizeof(alphanum) - 1)];
}
return tmp_str;
}
/**
* @brief generate key package name
*
* @return std::string key package name
*/
static std::string generate_key_package_name() {
std::random_device rd_; ///< Random device
auto mt_ = std::mt19937(rd_()); ///< Mersenne twister
std::uniform_int_distribution<int> dist(999, 99999);
auto file_string = boost::format("KeyPackage_%1%") % dist(mt_);
return file_string.str();
}
};
} // namespace GpgFrontend
#endif // GPGFRONTEND_KEYPACKAGEOPERATOR_H
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