unsigned char* stretchPasswordArgon(const char *password, unsigned char *salt, unsigned* oplimit, unsigned* memlimit) {
   if (sodium_is_zero(salt, CRYPTO_SALT_BYTES) && random_bytes(salt, CRYPTO_SALT_BYTES)) {
      return NULL;
   }
   unsigned char* key = malloc(CRYPTO_ARGON_OUT_SIZE);
   if (!*oplimit) {
      *oplimit = crypto_pwhash_argon2i_OPSLIMIT_INTERACTIVE;
   }
   if (!*memlimit) {
      *memlimit = crypto_pwhash_MEMLIMIT_MIN;
   }
   if (crypto_pwhash(key, CRYPTO_ARGON_OUT_SIZE, password, str_len(password), salt, *oplimit, *memlimit, crypto_pwhash_ALG_DEFAULT)) {
      LOGGING("Argon2 Failed");
      *oplimit = 0;
      *memlimit = 0;
      CLEAN(key);
      return NULL;
   }
   return key;
}