| /** @file |
| |
| @section license License |
| |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| #pragma once |
| |
| #include "tscore/Hash.h" |
| #include <cstdint> |
| |
| /* |
| Siphash is a Hash Message Authentication Code and can take a key. |
| |
| If you don't care about MAC use the void constructor and it will use |
| a zero key for you. |
| */ |
| |
| struct ATSHash64Sip24 : ATSHash64 { |
| ATSHash64Sip24(); |
| ATSHash64Sip24(const unsigned char key[16]); |
| ATSHash64Sip24(std::uint64_t key0, std::uint64_t key1); |
| void update(const void *data, std::size_t len) override; |
| void final() override; |
| std::uint64_t get() const override; |
| void clear() override; |
| |
| private: |
| unsigned char block_buffer[8] = {0}; |
| std::uint8_t block_buffer_len = 0; |
| std::uint64_t k0 = 0; |
| std::uint64_t k1 = 0; |
| std::uint64_t v0 = 0; |
| std::uint64_t v1 = 0; |
| std::uint64_t v2 = 0; |
| std::uint64_t v3 = 0; |
| std::uint64_t hfinal = 0; |
| std::size_t total_len = 0; |
| bool finalized = false; |
| }; |