GnuPG::Interface is a Perl module interface to
interacting with GnuPG. It implements a rich set
of filehandle communication with GnuPG and
includes a key object organization structure with
information gathered from GnuPG's with-colons option.
apt-method-https is an HTTPS (SSL)-capable method
for Debian's APT (Advanced Package Tool). It uses
the LWP toolkit and Crypt::SSLeay, and supports
both client and server certificates for
authentication.