.\" $OpenBSD: ssh-sk-helper.8,v 1.4 2022/04/29 03:24:30 djm Exp $
.\"
.\" Copyright (c) 2010 Markus Friedl.  All rights reserved.
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd $Mdocdate: April 29 2022 $
.Dt SSH-SK-HELPER 8
.Os
.Sh NAME
.Nm ssh-sk-helper
.Nd OpenSSH helper for FIDO authenticator support
.Sh SYNOPSIS
.Nm
.Op Fl v
.Sh DESCRIPTION
.Nm
is used by
.Xr ssh 1 ,
.Xr ssh-agent 1 ,
and
.Xr ssh-keygen 1
to access keys provided by a FIDO authenticator.
.Pp
.Nm
is not intended to be invoked directly by the user.
.Pp
A single option is supported:
.Bl -tag -width Ds
.It Fl v
Verbose mode.
Causes
.Nm
to print debugging messages about its progress.
This is helpful in debugging problems.
Multiple
.Fl v
options increase the verbosity.
The maximum is 3.
.Pp
Note that
.Xr ssh 1 ,
.Xr ssh-agent 1 ,
and
.Xr ssh-keygen 1
will automatically pass the
.Fl v
flag to
.Nm
when they have themselves been placed in debug mode.
.El
.Sh SEE ALSO
.Xr ssh 1 ,
.Xr ssh-agent 1 ,
.Xr ssh-keygen 1
.Sh HISTORY
.Nm
first appeared in
.Ox 6.7 .
.Sh AUTHORS
.An Damien Miller Aq Mt djm@openbsd.org