How to configure mod_proxy as a forward proxy that accepts only HTTPS requests from specific client hosts

Issue

I wants to configure mod_proxy as a forward proxy server that accepts only HTTPS requests from only specific client hosts. How do I achieve it?

I tried the following configuration but it does not work:

ProxyRequests On

<Proxy http://*/*>
  Order deny,allow
  Deny from all
</Proxy>

<Proxy https://*/*>
  Order deny,allow
  Deny from all
  Allow from 192.168.0
</Proxy>

All HTTP requests from all clients (e.g. curl -v -k -x http://proxy-host:80/ http://http-server-host/) are denied as expected but all HTTPS request from all clients (e.g. curl -v -k -x http://proxy-host:80/ https://http-server-host/) are allowed.