That video had outdated information regarding the Estonian e-voting system. The report from 2014 has been invalidated by the newer system, IVXV, which has been redesigned to address previous criticism. The newer system is open source, available at https://github.com/vvk-ehk/ivxv.
A good source to quickly familiarize yourself with the architecure, is "Improving the verifiability of the Estonian Internet Voting scheme"[0] by Jan Willemson et al
Comments
That video had outdated information regarding the Estonian e-voting system. The report from 2014 has been invalidated by the newer system, IVXV, which has been redesigned to address previous criticism. The newer system is open source, available at https://github.com/vvk-ehk/ivxv. A good source to quickly familiarize yourself with the architecure, is "Improving the verifiability of the Estonian Internet Voting scheme"[0] by Jan Willemson et al
[0] https://research.cyber.ee/~janwil/publ/ivxv-evoteid.pdf