thaks for your kind and correct answer .
# htpasswd /var/www/htpasswd.conf user-X
Password:
Retype Password:
# chown www /var/www/htpasswd.conf
# chmod 600 /var/www/htpasswd.conf
again
# /etc/httpd.conf
ext_addr="*"
server "default" {
listen on * port 80
authenticate "secure area" with "/htpasswd.conf"
}
now i use Rpi3 openbsd as sshd and www server with basic auth .
Rpi3 is about 5W so very ecological .
and
Rpi3 openbsd is sufficient for personal use and very convinient .
thanks
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best regards by T tuyosi