For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Sam0523/openSUSE_Tumbleweed/home:Sam0523.repo
zypper refresh
zypper install trojan
For openSUSE Factory PowerPC run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Sam0523/openSUSE_Factory_PowerPC/home:Sam0523.repo
zypper refresh
zypper install trojan
For openSUSE Factory ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Sam0523/openSUSE_Factory_ARM/home:Sam0523.repo
zypper refresh
zypper install trojan