sha1.h

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// Copyright (c) 2014-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_CRYPTO_SHA1_H
#define BITCOIN_CRYPTO_SHA1_H
 
#include <cstdint>
#include <cstdlib>
 
class CSHA1
{
private:
    uint32_t s[5];
    unsigned char buf[64];
    uint64_t bytes{0};
 
public:
    static constexpr size_t OUTPUT_SIZE = 20;
 
    CSHA1();
    CSHA1& Write(const unsigned char* data, size_t len);
    void Finalize(unsigned char hash[OUTPUT_SIZE]);
    CSHA1& Reset();
};
 
#endif // BITCOIN_CRYPTO_SHA1_H