Why sign my xap?

Question

Why should I sign my XAP? Are their benefits for the Silverlight user?

Does it offer me any protection against unauthorized access on my XAP? If I use the bootloader to load downloadable xaps, and someone changes one of the xaps, will that help?

Answer 1

First of all, it guarantees users that this application is developed by you. Secondly, you are not allowed to automatically update the XAP file if you run OOB with increased trust, if the XAP file is not signed.

Answer 2

You really need it if you want to have an app with increased trust. if you do not sign, it is not so important.

:

• http://channel9.msdn.com/learn/courses/Silverlight4/Overview/Overview/Moving-Beyond-the-Browser--Elevated-Trust-Applications/
• http://johnpapa.net/silverlight/digitally-signing-a-xap-silverlight/