Why is everyone just authoritatively dismissing this, when this has been supported for >7 years and is easily found with a google search? There is the HostKeyA

Why is everyone just authoritatively dismissing this, when this has been supported for >7 years and is easily found with a google search? There is the HostKeyAgent configuration directive, which communicates over a unix domain socket to make signing requests. https://framkant.org/2017/10/strong-authentication-openssh-hosts-using-hardware-tokens/ https://framkant.org/2017/10/strong-authentication-openssh-h... https://github.com/openssh/openssh-portable/blob/12492c0abf1eb415d08a897cc1d8b9e789888230/servconf.h#L94 https://github.com/openssh/openssh-portable/blob/12492c0abf1...