For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security:tls/openSUSE_Tumbleweed/security:tls.repo
zypper refresh
zypper install libopenssl1_0_0
For openSUSE Factory zSystems run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security:tls/openSUSE_Factory_zSystems/security:tls.repo
zypper refresh
zypper install libopenssl1_0_0
For openSUSE Factory PowerPC run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security:tls/openSUSE_Factory_PowerPC/security:tls.repo
zypper refresh
zypper install libopenssl1_0_0
For openSUSE Factory ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security:tls/openSUSE_Factory_ARM/security:tls.repo
zypper refresh
zypper install libopenssl1_0_0
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security:tls/openSUSE_Factory/security:tls.repo
zypper refresh
zypper install libopenssl1_0_0
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security:tls/15.6/security:tls.repo
zypper refresh
zypper install libopenssl1_0_0
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security:tls/15.5/security:tls.repo
zypper refresh
zypper install libopenssl1_0_0