update-users (u) [USER]... update user authorized_keys files
add-id-certifier (c+) [KEYID|FILE] import and tsign a certification key
- --domain (-n) DOMAIN limit ID certifications to DOMAIN
+ --domain (-n) DOMAIN limit ID certifications to DOMAIN (*)
--trust (-t) TRUST trust level of certifier (full)
--depth (-d) DEPTH trust depth for certifier (1)
remove-id-certifier (c-) KEYID remove a certification key