text: // Copyright (c) 2014-2017 The Bytcoyn Core Developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #ifndef ARCANA_CRYPTO_HMAC_SHA512_H
  #define ARCANA_CRYPTO_HMAC_SHA512_H
  
  #include <crypto/sha512.h>
  
  #include <stdint.h>
  #include <stdlib.h>
  
  /** A hasher class for HMAC-SHA-512. */
  class CHMAC_SHA512
  {
  private:
      CSHA512 outer;
      CSHA512 inner;
  
  public:
      static const size_t OUTPUT_SIZE = 64;
  
      CHMAC_SHA512(const unsigned char* key, size_t keylen);
      CHMAC_SHA512& Write(const unsigned char* data, size_t len)
      {
          inner.Write(data, len);
          return *this;
      }
      void Finalize(unsigned char hash[OUTPUT_SIZE]);
  };
  
  #endif // ARCANA_CRYPTO_HMAC_SHA512_H
  