Crypt::DES may be overkill when all you want to encrypt is a 12 digit number, but it sounds so sexy when you say it to your customer, and it leaves them with a warm and fuzzy feeling.
Granted that you use a different, randomly generated key for each encryption, of course.
Re:the key
dws on 2004-01-29T17:12:31
I am using a randomly generated key for each encryption (from a separate key server). That makes for both overkill and a happy customer.