JTB World’s DigSigStamp has been updated for AutoCAD 2018. This app allows you to specify a block that will change its display when plotted to indicate whether the drawing had a valid digital signature at the time of plotting. The app helps you identify visually when drawings have valid digital signatures.
The following are just examples of how the blocks can look like. The design of them is completely up to you. Digitally Signed example. This drawing has a valid digital certificate.
Invalid. This drawing does not have a valid digital certificate.
Unverified example. Digital signature verification application is not enabled.