[squid-users] secure basic authentication

Hi all

-basic authentication is insecure by nature.

-basic authentication + SSL only is secure in the logon, but
the stateless characteristic of HTTP , it will send the consecutive
sensitive headers
in clear text.

-Digest isn´t support ldap in this moment, it isn´t Single Sign On.

-NTLM isn´t a standard HTTP authentication scheme.

Then, which is the best method and secure to implement a basic proxy
authentication
in a proxy environment?.

Thanks in Advance.

-- 
Emilio Casbas