1.\" $OpenBSD: ssh-sk-helper.8,v 1.4 2022/04/29 03:24:30 djm Exp $ 2.\" 3.\" Copyright (c) 2010 Markus Friedl. All rights reserved. 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd $Mdocdate: April 29 2022 $ 18.Dt SSH-SK-HELPER 8 19.Os 20.Sh NAME 21.Nm ssh-sk-helper 22.Nd OpenSSH helper for FIDO authenticator support 23.Sh SYNOPSIS 24.Nm 25.Op Fl v 26.Sh DESCRIPTION 27.Nm 28is used by 29.Xr ssh 1 , 30.Xr ssh-agent 1 , 31and 32.Xr ssh-keygen 1 33to access keys provided by a FIDO authenticator. 34.Pp 35.Nm 36is not intended to be invoked directly by the user. 37.Pp 38A single option is supported: 39.Bl -tag -width Ds 40.It Fl v 41Verbose mode. 42Causes 43.Nm 44to print debugging messages about its progress. 45This is helpful in debugging problems. 46Multiple 47.Fl v 48options increase the verbosity. 49The maximum is 3. 50.Pp 51Note that 52.Xr ssh 1 , 53.Xr ssh-agent 1 , 54and 55.Xr ssh-keygen 1 56will automatically pass the 57.Fl v 58flag to 59.Nm 60when they have themselves been placed in debug mode. 61.El 62.Sh SEE ALSO 63.Xr ssh 1 , 64.Xr ssh-agent 1 , 65.Xr ssh-keygen 1 66.Sh HISTORY 67.Nm 68first appeared in 69.Ox 6.7 . 70.Sh AUTHORS 71.An Damien Miller Aq Mt djm@openbsd.org 72