1
vote
1answer
247 views

About the security of adding a signature to a PDF file

We can add a "bitmap" or image signature to a PDF file, either by using Adobe Acrobat or by Mac's Preview app, but I wonder, besides always encrypting it with a password before sending it by email to ...
1
vote
1answer
130 views

Viewing hd location of installed certificates in firefox

I recently installed a digital id/certificate from verisign and was wondering if there is a way to view the certificate location on my computer. I installed it according to their instructions through ...
9
votes
5answers
5k views

If Mac code signing is tampered with, what might fail?

What annoyances or real problems may occur when the digital signature of a Mac application is broken? Applications on a Mac can be digitally signed. When the signature is somehow broken, I know a few ...