text: 
  #ifndef CERTSTORE_SHA256_H
  #define CERTSTORE_SHA256_H
  
  
  class Sha256 {
  public:
      static void sha256(unsigned char* message, unsigned int messageLength, unsigned char* digest);
      static std::vector<unsigned char> sha256(std::vector<unsigned char> message);
  };
  
  
  #endif //CERTSTORE_SHA256_H
  