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1SSH-KEYSIGN(8) OpenBSD System Manager's Manual SSH-KEYSIGN(8)
2
3NAME
4 ssh-keysign - ssh helper program for host-based authentication
5
6SYNOPSIS
7 ssh-keysign
8
9DESCRIPTION
10 ssh-keysign is used by ssh(1) to access the local host keys and generate
11 the digital signature required during host-based authentication with SSH
12 protocol version 2.
13
14 ssh-keysign is disabled by default and can only be enabled in the global
15 client configuration file /etc/ssh/ssh_config by setting EnableSSHKeysign
16 to ``yes''.
17
18 ssh-keysign is not intended to be invoked by the user, but from ssh(1).
19 See ssh(1) and sshd(8) for more information about host-based
20 authentication.
21
22FILES
23 /etc/ssh/ssh_config
24 Controls whether ssh-keysign is enabled.
25
26 /etc/ssh/ssh_host_dsa_key
27 /etc/ssh/ssh_host_ecdsa_key
28 /etc/ssh/ssh_host_rsa_key
29 These files contain the private parts of the host keys used to
30 generate the digital signature. They should be owned by root,
31 readable only by root, and not accessible to others. Since they
32 are readable only by root, ssh-keysign must be set-uid root if
33 host-based authentication is used.
34
35 /etc/ssh/ssh_host_dsa_key-cert.pub
36 /etc/ssh/ssh_host_ecdsa_key-cert.pub
37 /etc/ssh/ssh_host_rsa_key-cert.pub
38 If these files exist they are assumed to contain public
39 certificate information corresponding with the private keys
40 above.
41
42SEE ALSO
43 ssh(1), ssh-keygen(1), ssh_config(5), sshd(8)
44
45HISTORY
46 ssh-keysign first appeared in OpenBSD 3.2.
47
48AUTHORS
49 Markus Friedl <markus@openbsd.org>
50
51OpenBSD 4.9 August 31, 2010 OpenBSD 4.9