Have you heard of Google? Super Search? Have you ever bought anything on line? HTTPS is the secure version of HTTP (the ubiquitous Hyper Text Transport Protocol you are using right now to read this page). HTTPS uses SSL (Secure Sockets Layer) to allow secure(ish) connections. I suggest you have a look at (as a start):

• IO::Socket::SSL
• Crypt::SSLeay
• http://www.openssl.org/

To answer you question the likely answer is yes you need more modules, probably libraries like openssl to generate your certificates and more research.

It requires some form of Secure Socket Layer (SSL) library and http clients/server set up to use it. The result is http going encrypted over port 443. LWP::UserAgent can do the client-side role.

CPAN has HTTP::Daemon::SSL for starters. Net::Daemon::SSL also looks interesting. And there's also IO::Socket::SSL.