Ok I've done some research and some thinking. What about storing orders in the database (product info and customer info) and then using GnuPG or PGP to send the credit card info to the merchant? This way the credit card information is not stored on the server or in the database but only in printed format by the merchant. Since my client processes all of the credit card orders by hand this seems like an ideal solution.

What is more, the order and customer info do not need to be present in the encrypted emails. That way the email does not contain a customer name, but only an order id (which could even be a unique and hidden value stored via AES in the mysql db).

What are your thoughts?


----- Original Message ----- From: "Bastien Koert" <[EMAIL PROTECTED]>
To: "Keith Spiller" <[EMAIL PROTECTED]>; <php-db@lists.php.net>
Sent: Tuesday, December 18, 2007 9:41 PM
Subject: RE: [PHP-DB] Credit Card Encryption

Think very carefully about what you want to do here. PCI (payment card industry) has radically changed the rules about how CC data is stored in a networked environment. If your data environment is shared (shared web hosting), don't even think about it. There are a large number of rules that you need to follow to make your data systems PCI compliant [ http://www.pcicomplianceguide.org/ ] and they are not easy to follow. Things like strong encryption, code audits by qualified third parties etc.

If you absolutely need to store the data (many of my large clients do this):
1. the database server should not be web facing, nor accessible internally by the web servers
2. the access (physical and electronic) should be extremely limited
3. the facility that holds the data should be hardened with limited controlled access 4. provide a cross reference number to the CC that other applications can use to replace the CC number

If you are storing transactional data, just store the confirmation number that is returned by the payment gateway that you use. Let the payment gateway assume the risks of handling the data, its what they get paid for. If the data is for re-occurring payments, let the payment gateway handle it, many support these kinds of payments.

From: [EMAIL PROTECTED]> To: php-db@lists.php.net> CC: [EMAIL PROTECTED]> Date: Tue, 18 Dec 2007 18:20:08 -0700> Subject: [PHP-DB] Credit Card Encryption> > Hi Everyone,> > I'm trying to determine the best method to store credit card numbers in a > mysql database. As yet I have been unable to determine whether I should use > MySQL AES, DES or a PHP encryption method. I would greatly appreciate any > advice you guys could offer.> > Thanks.> > Keith > > -- > PHP Database Mailing List (http://www.php.net/)> To unsubscribe, visit: http://www.php.net/unsub.php>
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