44 lines
1.2 KiB
C++
44 lines
1.2 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2016-2018 Danny Robson <danny@nerdcruft.net>
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*/
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#ifndef CRUFT_UTIL_HASH_SIPHASH_HPP
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#define CRUFT_UTIL_HASH_SIPHASH_HPP
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#include "../view.hpp"
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#include <cstdint>
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#include <type_traits>
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namespace util::hash {
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template <int CompressionsV, int FinalisationsV>
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class siphash {
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public:
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using digest_t = std::uint64_t;
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static constexpr auto compression_rounds = CompressionsV;
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static constexpr auto finalisation_rounds = FinalisationsV;
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siphash (std::array<uint64_t,2>) noexcept;
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digest_t operator() (util::view<const std::uint8_t*> data) const noexcept;
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private:
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std::array<uint64_t,2> m_key;
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};
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};
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#endif
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