Comment 41 for bug 1771880

To maintain a respectful atmosphere, please follow the code of conduct - http://www.ubuntu.com/project/about-ubuntu/conduct. Bug reports are handled by humans, the majority of whom are volunteers, so please bear this in mind. Venting frustration in a bug report isn't fine.

The bug is triaged with reference to upstream report explaining the details of the issue. Ubuntu is perfectly capable to import certificates and sign documents, it's just that the GNOME frontend isn't featuring that capability.

Alternative solutions have been listed in previous comment or on online articles, see e.g https://askubuntu.com/questions/122058/how-do-i-make-a-digital-certificate-available-to-libreoffice-writer-for-digital