SSH-KEYSIGN(8) Maintenance Commands and Procedures SSH-KEYSIGN(8)
NAME
ssh-keysign - OpenSSH helper for host-based authentication
SYNOPSIS
ssh-keysignDESCRIPTION
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.
/var/ssh/ssh_host_dsa_key /var/ssh/ssh_host_ecdsa_key /var/ssh/ssh_host_ed25519_key /var/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.
/var/ssh/ssh_host_dsa_key-cert.pub /var/ssh/ssh_host_ecdsa_key-cert.pub /var/ssh/ssh_host_ed25519_key-cert.pub /var/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>
illumos March 31, 2022 illumos