I use the openSUSE rpm package of the meetings desktop client However, I definitely prefer to install software that is correctly cryptographically signed. But this package IS NOT! That was not a problem so far.
However, the recent version 5.10.4 is not signed at all (see rpm -qpi output below), and the gpg signature validation fails because the signature is missing: see below line "Signature"
rpm -qpi zoom_openSUSE_x86_64.rpm
Name : zoom
Version : 18.104.22.16845_openSUSE
Release : 1
Install Date: (not installed)
Group : default
Size : 478466233
License : see https://www.zoom.us/
Signature : (none)
Source RPM : zoom-22.214.171.12445_openSUSE-1.src.rpm
Build Date : So 24 Apr 2022 13:31:02 CEST
Build Host : localhost
Relocations : /
Packager : Zoom Linux Team <https://support.zoom.us>
Vendor : Zoom Video Communications, Inc.
URL : https://www.zoom.us
Summary : Zoom Cloud Meetings