As the problem is still not solved in seahorse 3.36
May I can help someone with this link that explains how you can sign a libreoofice document without seahorse, it works for me. https://askubuntu.com/questions/122058/how-do-i-make-a-digital-certificate-available-to-libreoffice-writer-for-digital
As the problem is still not solved in seahorse 3.36
May I can help someone with this link that explains how you can sign a libreoofice document without seahorse, it works for me. /askubuntu. com/questions/ 122058/ how-do- i-make- a-digital- certificate- available- to-libreoffice- writer- for-digital
https:/