SYNOPSIS
     ssh-keysign

DESCRIPTION
     ssh-keysign  is used by ssh(1) to access the local host keys
and generate
     the digital signature required during hostbased  authentica-
tion with SSH
     protocol version 2.

     ssh-keysign  is  disabled by default and can only be enabled
in the global
     client configuration file /etc/ssh/ssh_config by setting En-
ableSSHKeysign
     to ``yes''.

     ssh-keysign  is  not intended to be invoked by the user, but
from ssh(1).
     See ssh(1) and sshd(8) for more information about  hostbased
authentica-
     tion.

FILES
     /etc/ssh/ssh_config
             Controls whether ssh-keysign is enabled.

     /etc/ssh/ssh_host_dsa_key, /etc/ssh/ssh_host_rsa_key
             These  files  contain  the private parts of the host
keys used to
             generate the  digital  signature.   They  should  be
owned by root,
             readable only by root, and not accessible to others.
Since they
             are readable only by root, ssh-keysign must be  set-
uid root if
             hostbased authentication is used.

SEE ALSO
     ssh(1), ssh-keygen(1), ssh_config(5), sshd(8)

HISTORY
     ssh-keysign first appeared in OpenBSD 3.2.

AUTHORS
     Markus Friedl <markus@openbsd.org>

OpenBSD      3.5                           May      24,      2002
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