1// Copyright (c) 2014-present The Bitcoin Core developers
2// Distributed under the MIT software license, see the accompanying
3// file COPYING or http://www.opensource.org/licenses/mit-license.php.
4
5#ifndef BITCOIN_CRYPTO_SHA512_H
6#define BITCOIN_CRYPTO_SHA512_H
7
8#include <cstddef>
9#include <cstdint>
10
11/** A hasher class for SHA-512. */
12class CSHA512
13{
14private:
15    uint64_t s[8];
16    unsigned char buf[128];
17    uint64_t bytes{0};
18
19public:
20    static constexpr size_t OUTPUT_SIZE = 64;
21
22    CSHA512();
23    CSHA512& Write(const unsigned char* data, size_t len);
24    void Finalize(unsigned char hash[OUTPUT_SIZE]);
25    CSHA512& Reset();
26    uint64_t Size() const { return bytes; }
27};
28
29#endif // BITCOIN_CRYPTO_SHA512_H
30