text: #pragma once
  
  #include <array>
  #include <string>
  
  namespace coding
  {
  class SHA1
  {
  public:
    static size_t constexpr kHashSizeInBytes = 20;
    using Hash = std::array<uint8_t, kHashSizeInBytes>;
  
    static Hash Calculate(std::string const & filePath);
    static std::string CalculateBase64(std::string const & filePath);
  };
  }  // coding
  