sha256.h

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// Copyright (c) 2014-2016 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_SHA256_H
#define BITCOIN_CRYPTO_SHA256_H
 
#include <cstdint>
#include <cstdlib>
#include <string>
 
class CSHA256 {
private:
    uint32_t s[8];
    uint8_t buf[64];
    uint64_t bytes;
 
public:
    static const size_t OUTPUT_SIZE = 32;
 
    CSHA256();
    CSHA256 &Write(const uint8_t *data, size_t len);
    void Finalize(uint8_t hash[OUTPUT_SIZE]);
    CSHA256 &Reset();
};
 
std::string SHA256AutoDetect();
 
void SHA256D64(uint8_t *output, const uint8_t *input, size_t blocks);
 
#endif // BITCOIN_CRYPTO_SHA256_H