crypto-util.hpp
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crypto-util.hpp
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	/*
	* Copyright (C) 2020 Tusooa Zhu <tusooa@vista.aero>
	*
	* This file is part of libkazv.
	*
	* libkazv is free software: you can redistribute it and/or modify
	* it under the terms of the GNU Affero General Public License as
	* published by the Free Software Foundation, either version 3 of the
	* License, or (at your option) any later version.
	*
	* libkazv 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 Affero General Public License for more details.
	*
	* You should have received a copy of the GNU Affero General Public License
	* along with libkazv. If not, see <https://www.gnu.org/licenses/>.
	*/

	#pragma once

	#include <random>
	#include <algorithm>
	#include <vector>

	namespace Kazv
	{
	using ByteArray = std::vector<char>;

	[[nodiscard]] inline ByteArray genRandom(int len)
	{
	auto rd = std::random_device{};
	auto ret = ByteArray(len, '\0');
	std::generate(ret.begin(), ret.end(), [&] { return rd(); });
	return ret;
	}

	namespace CryptoConstants
	{
	inline const std::string ed25519{"ed25519"};
	inline const std::string curve25519{"curve25519"};

	inline const std::string olmAlgo{"m.olm.v1.curve25519-aes-sha2"};
	inline const std::string megOlmAlgo{"m.megolm.v1.aes-sha2"};
	}
	}