bitcoin/src/util/bytevectorhash.h
MarcoFalke fa5f297748
scripted-diff: [doc] Unify stale copyright headers
-BEGIN VERIFY SCRIPT-

 sed --in-place --regexp-extended \
   's;( 20[0-2][0-9])(-20[0-2][0-9])? The Bitcoin Core developers;\1-present The Bitcoin Core developers;g' \
   $( git grep -l 'The Bitcoin Core developers' -- ':(exclude)COPYING' ':(exclude)src/ipc/libmultiprocess' ':(exclude)src/minisketch' )

-END VERIFY SCRIPT-
2025-12-16 22:21:15 +01:00

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C++

// Copyright (c) 2018-present 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