hey can u be more specific on how to convert to bin to hex.

bool HashStatus::calculate_digest_value(char * path,unsigned char * output)
{

   FILE* file = fopen(path, "rb");
   if(!file) {
    g_message("SignatureValidator::VerifyReferences,file not opened");
   return -1;
   }

   unsigned char hash[SHA256_DIGEST_LENGTH];
   SHA256_CTX sha256;
   SHA256_Init(&sha256);
   const int bufSize = 32768;
   unsigned char* buffer = malloc(bufSize);
   int bytesRead = 0;
   if(!buffer) return NULL;
   while((bytesRead = fread(buffer, 1, bufSize, file)))
   {
       g_message("calculate digest value,verify.cpp::%s",buffer);
       SHA256_Update(&sha256, buffer, bytesRead);
   }
   SHA256_Final(hash, &sha256);
   g_message("verify.cpp,after final");
   sha256_hash_string(hash, output);
   g_message("verify.cpp,after sha256_hash_string %s",hash);
   fclose(file);
   free(buffer);
  return true;
}

this is my code to convert file data into hash using sha256 openssl function

o/p is :1d54e12333988471354907a760b9cde861423615bb5255ee837e3b27b32366 but actual o/p is:HVThAjM5iEcTVJB6dgC5zehhQjYVu1JV7oN+OyezI2Y=

can you guys please help me with whatz wrong with this code,ASAP

and i'm new to this please guide me step by step and in detail..