| Damien Miller | 495dca3 | 2003-04-01 21:42:14 +1000 | [diff] [blame^] | 1 | .\" $OpenBSD: ssh-keysign.8,v 1.6 2003/03/28 10:11:43 jmc Exp $ |
| Ben Lindstrom | 1bad256 | 2002-06-06 19:57:33 +0000 | [diff] [blame] | 2 | .\" |
| 3 | .\" Copyright (c) 2002 Markus Friedl. All rights reserved. |
| 4 | .\" |
| 5 | .\" Redistribution and use in source and binary forms, with or without |
| 6 | .\" modification, are permitted provided that the following conditions |
| 7 | .\" are met: |
| 8 | .\" 1. Redistributions of source code must retain the above copyright |
| 9 | .\" notice, this list of conditions and the following disclaimer. |
| 10 | .\" 2. Redistributions in binary form must reproduce the above copyright |
| 11 | .\" notice, this list of conditions and the following disclaimer in the |
| 12 | .\" documentation and/or other materials provided with the distribution. |
| 13 | .\" |
| 14 | .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 15 | .\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 16 | .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 17 | .\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 18 | .\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 19 | .\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 20 | .\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 21 | .\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 22 | .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 23 | .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 24 | .\" |
| 25 | .Dd May 24, 2002 |
| 26 | .Dt SSH-KEYSIGN 8 |
| 27 | .Os |
| 28 | .Sh NAME |
| 29 | .Nm ssh-keysign |
| 30 | .Nd ssh helper program for hostbased authentication |
| 31 | .Sh SYNOPSIS |
| Ben Lindstrom | 11d470d | 2002-06-11 15:50:13 +0000 | [diff] [blame] | 32 | .Nm |
| Ben Lindstrom | 1bad256 | 2002-06-06 19:57:33 +0000 | [diff] [blame] | 33 | .Sh DESCRIPTION |
| 34 | .Nm |
| 35 | is used by |
| 36 | .Xr ssh 1 |
| Ben Lindstrom | 11d470d | 2002-06-11 15:50:13 +0000 | [diff] [blame] | 37 | to access the local host keys and generate the digital signature |
| 38 | required during hostbased authentication with SSH protocol version 2. |
| Ben Lindstrom | 5d35a2f | 2002-07-04 00:19:40 +0000 | [diff] [blame] | 39 | .Pp |
| 40 | .Nm |
| 41 | is disabled by default and can only be enabled in the |
| Ben Lindstrom | 2594d9a | 2002-12-23 02:09:59 +0000 | [diff] [blame] | 42 | global client configuration file |
| Ben Lindstrom | 5d35a2f | 2002-07-04 00:19:40 +0000 | [diff] [blame] | 43 | .Pa /etc/ssh/ssh_config |
| 44 | by setting |
| Ben Lindstrom | b6df73b | 2002-11-09 15:52:31 +0000 | [diff] [blame] | 45 | .Cm EnableSSHKeysign |
| Ben Lindstrom | 5d35a2f | 2002-07-04 00:19:40 +0000 | [diff] [blame] | 46 | to |
| 47 | .Dq yes . |
| 48 | .Pp |
| Ben Lindstrom | 1bad256 | 2002-06-06 19:57:33 +0000 | [diff] [blame] | 49 | .Nm |
| 50 | is not intended to be invoked by the user, but from |
| 51 | .Xr ssh 1 . |
| 52 | See |
| 53 | .Xr ssh 1 |
| 54 | and |
| 55 | .Xr sshd 8 |
| 56 | for more information about hostbased authentication. |
| Ben Lindstrom | 11d470d | 2002-06-11 15:50:13 +0000 | [diff] [blame] | 57 | .Sh FILES |
| 58 | .Bl -tag -width Ds |
| Ben Lindstrom | 5d35a2f | 2002-07-04 00:19:40 +0000 | [diff] [blame] | 59 | .It Pa /etc/ssh/ssh_config |
| 60 | Controls whether |
| 61 | .Nm |
| 62 | is enabled. |
| Ben Lindstrom | 11d470d | 2002-06-11 15:50:13 +0000 | [diff] [blame] | 63 | .It Pa /etc/ssh/ssh_host_dsa_key, /etc/ssh/ssh_host_rsa_key |
| 64 | These files contain the private parts of the host keys used to |
| Damien Miller | 495dca3 | 2003-04-01 21:42:14 +1000 | [diff] [blame^] | 65 | generate the digital signature. |
| 66 | They should be owned by root, readable only by root, and not |
| Ben Lindstrom | 11d470d | 2002-06-11 15:50:13 +0000 | [diff] [blame] | 67 | accessible to others. |
| 68 | Since they are readable only by root, |
| 69 | .Nm |
| 70 | must be set-uid root if hostbased authentication is used. |
| 71 | .El |
| Ben Lindstrom | 1bad256 | 2002-06-06 19:57:33 +0000 | [diff] [blame] | 72 | .Sh SEE ALSO |
| 73 | .Xr ssh 1 , |
| Ben Lindstrom | 11d470d | 2002-06-11 15:50:13 +0000 | [diff] [blame] | 74 | .Xr ssh-keygen 1 , |
| Ben Lindstrom | 5d35a2f | 2002-07-04 00:19:40 +0000 | [diff] [blame] | 75 | .Xr ssh_config 5 , |
| Ben Lindstrom | 1bad256 | 2002-06-06 19:57:33 +0000 | [diff] [blame] | 76 | .Xr sshd 8 |
| 77 | .Sh AUTHORS |
| 78 | Markus Friedl <markus@openbsd.org> |
| 79 | .Sh HISTORY |
| 80 | .Nm |
| 81 | first appeared in |
| 82 | .Ox 3.2 . |