https://learn.microsoft.com/it-it/dotnet/api/system.configuration.protectedconfigurationprovider?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0
ProtectedConfigurationProvider Class (System.Configuration) | Microsoft Learn
The base class to create providers for encrypting and decrypting protected configuration data.
class systemconfigurationmicrosoftlearn