That's the whole reason I wrote Getting Started with GnuPG and GPG. The write-up was
a generalization of the Credit Card encryption scheme we used to
use (but since then we've moved on to using a realtime payment
gateway and we never hold in permanent storage the CC number).
-derby
Comment on Re: Using Asymmetric keys for Encryption
Yeah, this is the client's decision. If I had my druthers, it would use a merchant gateway right now. As it is, that will probably be something for them to upgrade to later on. Thanks for the link! :)