hmacsha256_update(&hmac, (unsigned char *)buffer, strlen(buffer));
hmacsha256_final(&hmac, digest);
/* hahahaha */
snprintf(buffer, sizeof(buffer), "%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x", digest[0], digest[1], digest[2], digest[3], digest[4], digest[5], digest[6], digest[7], digest[8], digest[9], digest[10], digest[11], digest[12], digest[13], digest[14], digest[15], digest[16], digest[17], digest[18], digest[19], digest[20], digest[21], digest[22], digest[23], digest[24], digest[25], digest[26], digest[27], digest[28], digest[29], digest[30], digest[31]);
hmacsha256_update(&hmac, (unsigned char *)buffer, strlen(buffer));
hmacsha256_final(&hmac, digest);
/* hahahaha */
snprintf(buffer, sizeof(buffer), "%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x", digest[0], digest[1], digest[2], digest[3], digest[4], digest[5], digest[6], digest[7], digest[8], digest[9], digest[10], digest[11], digest[12], digest[13], digest[14], digest[15], digest[16], digest[17], digest[18], digest[19], digest[20], digest[21], digest[22], digest[23], digest[24], digest[25], digest[26], digest[27], digest[28], digest[29], digest[30], digest[31]);