ssh-keysign(8) on FreeBSD
The text 004f7b85d1e4, as FreeBSD 14.2-RELEASE, FreeBSD 14.1-RELEASE, FreeBSD 14.0-RELEASE, FreeBSD 13.4-RELEASE, FreeBSD 13.3-RELEASE, FreeBSD 13.2-RELEASE, FreeBSD 12.4-RELEASE shipped it.
OpenSSH helper for host-based authentication