I have a table (dbf file) which contains user names and passwords and other
fields. I use SSL protocol in web server.

I have found that http basics authentication info (user name and password) is not passed to my app from web server.

I don't want to pass user name and password as
hidden form variables or query string parameters: those can be read by
intruder since pages are cached in a local disk.
Also, I cannot use temporary cookie since this may be disabled.
My app can read and delete users and this is difficult to syncronize
this table with web server users table so I cannot use web server buil-in
page based authentication.

How to implement user authentication in this case ?