Script with sensitive info

[kynn@panix.com]

   From: "James R. Hendrick" <hendrick@keane-nne.com>
   Date: Wed, 23 Jul 2003 16:41:50 -0400

   You *can* require that a human input that key when the script
   starts up (maybe once per system boot). This still requires the key
   stay in memory in the clear (better than disk, but still possible
   to access).

I like this idea.  So let me ask a simpler question (I'm a complete
PGP/Gnupg novice): is there a good way to use Gnupg from within a Perl
script to encrypt and decrypt a text string based on a user-supplied
password?

Many thanks,

KJ