#ifndef HASH_SHA256_2019_01_15_H
  #define HASH_SHA256_2019_01_15_H

  #include <ALCryptoLib/stream/hash/hash_sha_224_256_base.h>

  #if(__cplusplus >= 201703L)
  namespace al::crypto::stream::hash {
  #else
  namespace al { namespace crypto { namespace stream { namespace hash {
  #endif

  class hash_sha256 : public al::crypto::stream::hash::hash_sha_224_256_base<256U>
  {
  private:
    using base_class_type = al::crypto::stream::hash::hash_sha_224_256_base<256U>;

  public:
    hash_sha256() = default;

    hash_sha256(const hash_sha256& other)
      : base_class_type(static_cast<const base_class_type&>(other)) { }

    hash_sha256(hash_sha256&& other) noexcept
      : base_class_type(static_cast<base_class_type&&>(other)) { }

    ~hash_sha256() override = default;

    auto operator=(const hash_sha256& other) -> hash_sha256&
    {
      if(this != &other)
      {
        static_cast<void>(base_class_type::operator=(static_cast<const base_class_type&>(other)));
      }

      return *this;
    }

    auto operator=(hash_sha256&& other) noexcept -> hash_sha256&
    {
      static_cast<void>(base_class_type::operator=(static_cast<base_class_type&&>(other)));

      return *this;
    }

    void initialize() override
    {
      base_class_type::initialize();

      base_class_type::transform_context[0U] = UINT32_C(0x6A09E667);
      base_class_type::transform_context[1U] = UINT32_C(0xBB67AE85);
      base_class_type::transform_context[2U] = UINT32_C(0x3C6EF372);
      base_class_type::transform_context[3U] = UINT32_C(0xA54FF53A);
      base_class_type::transform_context[4U] = UINT32_C(0x510E527F);
      base_class_type::transform_context[5U] = UINT32_C(0x9B05688C);
      base_class_type::transform_context[6U] = UINT32_C(0x1F83D9AB);
      base_class_type::transform_context[7U] = UINT32_C(0x5BE0CD19);
    }
  };

  #if(__cplusplus >= 201703L)
  } // namespace al::crypto::stream::hash
  #else
  } // namespace hash
  } // namespace stream
  } // namespace crypto
  } // namespace al
  #endif

#endif // HASH_SHA256_2019_01_15_H