ssh-keysign.openssh - based authentication
ssh-keysign
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)