How to sign a pdf with an enhanced qualified electronic signature on Linux for GAS Justice and for gosuslugi?

Question

Electronic digital signature

On Archlinux. According to https://ej.sudrf.ru/info/poryadok and https://www.gosuslugi.ru/help/faq/design/3663 .

Quest 1. GAS Justice. How to get UKEP? The best way?

Circuit? https://ca.kontur.ru/ But only Windows is visible there. Maybe get a flash drive from them and extract the private key from it? And sign as suggested here . But for the State Services, only these tokens (see the link above): Rutoken EDS, Rutoken EDS 2.0, JaCarta GOST, JaCarta-2 GOST, eToken GOST. Then take Rutoken EDS and somehow use it in Linux to sign? Has anyone tried it?

Quest 2. Public services. How to use the ifcplugin plugin to access the State Services?

Answer 1

I did for android on rutoken and for web on rutoken and cryptopro plugin browser . Both companies have all the software and implementation instructions. Rutoken even sent two EDS 2.0 tokens - usb and type-c for free for setup.
Rutoken
Operating systems support:
Microsoft Windows 11/10/8.1/2019/2016/2012R2/8/2012/7/2008R2/Vista/2008/XP/2003
GNU/Linux
Apple macOS/OSX
Crypto pro
CryptoPro EDS Browser plug-in easily embeds and is applicable in any of the modern browsers with support for JavaScript scripts:
Yandex.Browser
Internet Explorer
Microsoft Edge (based on Chromium)
Mozilla Firefox
Google Chrome
Apple Safari
Opera