private bool VerifySignature(string key)

// Typically: key = <payload>.<signature> // Decrypt payload (AES‑GCM) using a per‑install random key that is wrapped // with the public key. Return a typed object.

// 2. Helper functions -------------------------------------------------------- private string SanitizeKey(string input)

return RegistrationResult.Success;

// f) Persist securely SaveLicenseSecurely(payload);

// 3. Secure persistence ------------------------------------------------------ private void SaveLicenseSecurely(LicensePayload payload)