// Copyright (c) 2014-2022 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_CRYPTO_SHA512_H

#define BITCOIN_CRYPTO_SHA512_H

#include <cstdlib>

#include <stdint.h>

/** A hasher class for SHA-512. */

class CSHA512

{

private:

    uint64_t s[8];

    unsigned char buf[128];

    uint64_t bytes{0};

public:

    static constexpr size_t OUTPUT_SIZE = 64;

    CSHA512();

    CSHA512& Write(const unsigned char* data, size_t len);

    void Finalize(unsigned char hash[OUTPUT_SIZE]);

    CSHA512& Reset();

    uint64_t Size() const { return bytes; }

};

#endif // BITCOIN_CRYPTO_SHA512_H