Atmosphere/libraries/libvapours/include/vapours/crypto/impl/crypto_hash_function.hpp

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2020-02-24 01:34:30 +00:00
/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <vapours/common.hpp>
#include <vapours/assert.hpp>
#include <vapours/util.hpp>
#include <vapours/crypto/crypto_memory_compare.hpp>
#include <vapours/crypto/crypto_memory_clear.hpp>
namespace ams::crypto::impl {
template<typename T>
concept HashFunction = requires(T &t, const void *cv, void *v, size_t sz) {
{ T::HashSize } -> std::convertible_to<size_t>;
{ T::BlockSize } -> std::convertible_to<size_t>;
{ t.Initialize() } -> std::same_as<void>;
{ t.Update(cv, sz) } -> std::same_as<void>;
{ t.GetHash(v, sz) } -> std::same_as<void>;
};
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}