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man pages section 1M: System Administration Commands

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Updated: July 2017
 
 

ssh-keysign.openssh (1m)

Name

ssh-keysign.openssh - based authentication

Synopsis

ssh-keysign

Description

SSH-KEYSIGN(8)              System Manager's Manual             SSH-KEYSIGN(8)



NAME
       ssh-keysign - ssh helper program for host-based authentication

SYNOPSIS
       ssh-keysign

DESCRIPTION
       ssh-keysign  is used by ssh(1) to access the local host keys and gener-
       ate the digital signature required during host-based authentication.

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

       ssh-keysign is not intended to be invoked by the user, but from ssh(1).
       See ssh(1) and sshd(1M) for more information about host-based authenti-
       cation.

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


       /etc/ssh/ssh_host_dsa_key

       /etc/ssh/ssh_host_ecdsa_key

       /etc/ssh/ssh_host_ed25519_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
              host-based authentication is used.


       /etc/ssh/ssh_host_dsa_key-cert.pub

       /etc/ssh/ssh_host_ecdsa_key-cert.pub

       /etc/ssh/ssh_host_ed25519_key-cert.pub

       /etc/ssh/ssh_host_rsa_key-cert.pub
              If these files exist they are assumed to contain public certifi-
              cate information corresponding with the private keys above.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:


       +---------------+--------------------------+
       |ATTRIBUTE TYPE |     ATTRIBUTE VALUE      |
       +---------------+--------------------------+
       |Availability   | network/openssh          |
       +---------------+--------------------------+
       |Stability      | Pass-through uncommitted |
       +---------------+--------------------------+
SEE ALSO
       ssh(1), ssh-keygen(1), ssh_config(4), sshd(1M)

HISTORY
       ssh-keysign first appeared in OpenBSD 3.2 .

AUTHORS
       Markus Friedl <Mt markus@openbsd.org>



NOTES
       This     software     was    built    from    source    available    at
       https://java.net/projects/solaris-userland.   The  original   community
       source    was   downloaded   from    http://mirrors.sonic.net/pub/Open-
       BSD/OpenSSH/portable/openssh-7.4p1.tar.gz

       Further information about this software can be found on the open source
       community website at http://www.openssh.org/.



                               February 17 2016                 SSH-KEYSIGN(8)