OdDwgSignEx is a sample GUI application for Windows platform that demonstrates the digital security features of ODA Drawings SDK for protecting .dwg files. It illustrates:

• Signing a .dwg file with a digital security certificate.
• Validating the signature of a .dwg file.

The OdDwgSignEx sample application works correctly only if you have a Digital Certificate (Digital ID) properly installed on your OS.

A root certificate (CA) should be installed and set as trusted.

To learn more about working with digital signatures, refer to Working with Digital Signatures in a .dwg File.