box_nonce_len method
Implementation
Uint8List box_nonce_len(
Uint8List message, final int moff, final int mlen, Uint8List theNonce) {
if (!(message != null &&
message.length >= (moff + mlen) &&
theNonce != null &&
theNonce.length == nonceLength)) return null;
// prepare shared key
if (this._sharedKey == null) before();
return after_len(message, moff, mlen, theNonce);
}