siphash.h

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// Copyright (c) 2016-2018 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_CRYPTO_SIPHASH_H
#define BITCOIN_CRYPTO_SIPHASH_H

#include <uint256.h>

#include <cstdint>

class CSipHasher {
private:
    uint64_t v[4];
    uint64_t tmp;
    int count;

public:
    CSipHasher(uint64_t k0, uint64_t k1);
    CSipHasher &Write(uint64_t data);
    CSipHasher &Write(const uint8_t *data, size_t size);
    uint64_t Finalize() const;
};

uint64_t SipHashUint256(uint64_t k0, uint64_t k1, const uint256 &val);
uint64_t SipHashUint256Extra(uint64_t k0, uint64_t k1, const uint256 &val,
                             uint32_t extra);

#endif // BITCOIN_CRYPTO_SIPHASH_H