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// Copyright (c) 2018-2022 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_UTIL_BYTEVECTORHASH_H
#define BITCOIN_UTIL_BYTEVECTORHASH_H
#include <cstdint>
#include <cstddef>
#include <vector>
/**
* Implementation of Hash named requirement for types that internally store a byte array. This may
* be used as the hash function in std::unordered_set or std::unordered_map over such types.
* Internally, this uses a random instance of SipHash-2-4.
*/
class ByteVectorHash final
{
private:
uint64_t m_k0, m_k1;
public:
ByteVectorHash();
size_t operator()(const std::vector<unsigned char>& input) const;
};
#endif // BITCOIN_UTIL_BYTEVECTORHASH_H
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