I would say that CGI::Session, and following the examples from the CGI::Session Cookbook, will give you everything you need.

The only problem is that the examples given in the Cookbook have a couple of annoying typos and errors in them.

If you look at this page you'll find that the

init($cgi, $session)
[download]

doesn't match the

sub init {
        my ($session, $cgi) = @_;
[download]

and that the text file is PROFILE in one place and PROFILES in another. Those annoyances made it rather difficult for me to get started, but after that everything worked fine.

I have written to the author about the errors by the way.