For openSUSE Leap 42.2 Ports run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:markkp:branches:security/openSUSE_Leap_42.2_Ports/home:markkp:branches:security.repo
zypper refresh
zypper install openCryptoki
For openSUSE Factory zSystems run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:markkp:branches:security/openSUSE_Factory_zSystems/home:markkp:branches:security.repo
zypper refresh
zypper install openCryptoki
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:markkp:branches:security/15.4/home:markkp:branches:security.repo
zypper refresh
zypper install openCryptoki