Publisher : Unkonwn + code signing certificate in Visual studio project in Setup.exe and vsto file

Question

I have create Outlook add-in for the client. I have created the setup project for that. When I run my setup file it prompts for the trust and show Publisher : Unknown . And after installation when I open Outlook it again prompts for VSTO trust and again shows Publisher: Unknown .

My questions are:

1. My client has SSL certificate from GoDaddy. Can I use this certificate to sign my code?
2. If I sign my code using the SSL Certificate, Will both the publisher became known?
3. I have found something to add certificate in project using project property > Signing > Add Certificate from file. Will this help me to sign my setup file and my VSTO file?

I have searched on google for this but it confused me more.
Can anyone help me to solve this?
Thanks in advance...!

Answer 1

You can't use an SSL certificate for code signing. Check this SO question for details: What SSL certificate do I need?

In regard to 3), you are probably refering to giving an assembly a strong name . This is different from code signing and serves a different purpose.