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

NAME
     ssh-keysign – OpenSSH helper for host-based authentication

SYNOPSIS
     ssh-keysign

DESCRIPTION
     ssh-keysign is used by ssh(1) to access the local host keys and generate
     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 EnableSSHKeysign
     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 host-based
     authentication.

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

     /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_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
	     certificate information corresponding with the private keys
	     above.

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>

Debian				 June 17, 2024				Debian