Line data    Source code

       1             : // Copyright (c) 2014-2022 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 <cstdlib>
       9             : #include <stdint.h>
      10             : 
      11             : /** A hasher class for SHA-512. */
      12             : class CSHA512
      13             : {
      14             : private:
      15             :     uint64_t s[8];
      16             :     unsigned char buf[128];
      17             :     uint64_t bytes{0};
      18             : 
      19             : public:
      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           2 :     uint64_t Size() const { return bytes; }
      27             : };
      28             : 
      29             : #endif // BITCOIN_CRYPTO_SHA512_H