/*! \file pidigest.h
 * \ingroup Core
 * \~\brief
 * \~english Digest algorithms
 * \~russian Алгоритмы хэш-сумм
 *
 * \~\details
 * \~english
 * This file implements several common-usage hash algorithms
 * \~russian
 * Этот файл реализует несколько распространенных алгоритмов хэширования
 */
/*
	PIP - Platform Independent Primitives
	Digest algorithms
	Ivan Pelipenko peri4ko@yandex.ru

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU Lesser General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	This program 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 Lesser General Public License for more details.

	You should have received a copy of the GNU Lesser General Public License
	along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef pidigest_h
#define pidigest_h

#include "pibytearray.h"
#include "piconstchars.h"

class PIP_EXPORT PIDigest {
public:
	enum class Type {
		SHA1,
		SHA2_224,
		SHA2_256,
		SHA2_384,
		SHA2_512,
		SHA2_512_224,
		SHA2_512_256,
		MD2,
		MD4,
		MD5,
		BLAKE2s_128,
		BLAKE2s_160,
		BLAKE2s_224,
		BLAKE2s_256,
		BLAKE2b_128,
		BLAKE2b_160,
		BLAKE2b_224,
		BLAKE2b_256,
		BLAKE2b_384,
		BLAKE2b_512,
		Count,
	};

	static int hashLength(Type type);
	static int blockLength(Type type);
	static PIConstChars typeName(Type type);

	static PIByteArray calculate(const PIByteArray & msg, Type type);
	static PIByteArray HMAC(const PIByteArray & msg, const PIByteArray & key, PIDigest::Type type);
};

#endif