is used by ssh(1) to access the local host keys and generate the
digital signature required during host-based authentication.
is disabled by default and can only be enabled in the global
client configuration file /etc/ssh/ssh_config by setting
EnableSSHKeysign to “yes”.
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
Controls whether is enabled.
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, must be
set-uid root if host-based authentication is used.
If these files exist, they are assumed to contain public
certificate information corresponding with the private
This page is part of the openssh (Portable OpenSSH) project.
Information about the project can be found at
http://www.openssh.com/portable.html. If you have a bug report
for this manual page, see ⟨http://www.openssh.com/report.html⟩.
This page was obtained from the tarball openssh-9.6p1.tar.gz
2023-12-22. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-
to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not
part of the original manual page), send a mail to
GNU March 31, 2022 SSH-KEYSIGN(8)