ssh-pkcs11-helper(8) on FreeBSD
The text a50f90d2e98e, as FreeBSD 9.2-RELEASE, FreeBSD 9.1-RELEASE, FreeBSD 9.0-RELEASE, FreeBSD 8.4-RELEASE, FreeBSD 8.3-RELEASE, FreeBSD 8.2-RELEASE, FreeBSD 8.1-RELEASE shipped it.
ssh-agent helper program for PKCS#11 support