Best practices to store CreditCard information into DataBase

Question

In my country the online payments are not an old thing, the first time i saw a web application taking payments directly to a local bank account was last year.

So, Im

Answer 1

Encrypt encrypt encrypt. Don't decrypt if you don't absolutely have to - don't decrypt to show the last 4 digits. Don't decrypt to tell the user what their card was.

In fact, if you can, don't even keep the encrypted card numbers in the same physical server as the rest of the user information.