X11vnc server stores the passwords nearly in plaintext (there is an option to get the password back from the password file).Therefore i want to implement a password check using sha256 or another hashfunction, which is harder to reverse.In the man page are some hints, how to implement an own password checker. It is written that -unixpw_cmd should be the way to go, but unfortunatly I only get this error message when trying to log in:$ vncviewer localhostConnected to RFB server, using protocol version 3.8Server did not offer supported security typeI use this server commandline: x11vnc -ssl -forever -shared -unixpw -unixpw_cmd ./vncpwcheckAnd this script:#!/bin/bashread userread passecho -n $pass | sha256sum --status -c passwdfileThe passwdfile looks like this:2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae  -What do I forget? The man page says everthing how to use the single options but nothing which other options are needed that it works?
x11vnc and -unixpw_cmd option
authentication;x11vnc