Idea for sshd AuthorizedKeysCommand to use gpg trust database

gistfile1.txt

gpg --list-trustdb |
lua -e 'for line in io.stdin:lines() do
    local key, level = line:match("^rec%s+%d+, trust (%x+), ot=(%d+)")
    if key and tonumber(level) == 6 then -- 6 means ultimate trust (and not revoked)
        print(key)
    end
  end' |
xargs -n 1 gpg --export-ssh-key

The lua call can be done in awk Nevermind, what I wrote isn't exactly correct

awk '$5 = "ot=6", $3 = "trust" {print substr($4, 1, length($4)-1)}'