open_nonce_len method
Implementation
Uint8List? open_nonce_len(
Uint8List box, final int boxoff, final int boxlen, Uint8List theNonce) {
if (!(box.length >= (boxoff + boxlen) &&
theNonce.length == nonceLength)) return null;
// prepare shared key
if (_sharedKey == null) before();
return open_after_len(box, boxoff, boxlen, theNonce);
}