SET uses certificates to encrypt payment information. These keys are used to unscramble or decrypt the message. In the physical world, your wallet stores your credit cards and cash. In the online world, your digital wallet is installed as a plug-in to your web browser. Like your real wallet, your digital wallet stores your MasterCard number and your shipping information.
Online catalogs are Web pages that display items for sale by an online merchant.
The SET Secure Electronic Transaction TM protocol is an open industry standard developed for the secure transmission of payment information over the Internet and other electronic networks. SSL does not specify what data is sent or encrypted. In an SSL session, all data sent is encrypted. The SET logo is your assurance that the merchant is using software that has successfully completed the SET Software Certification test . Your shopping cart is part of an online catalog that keeps track of the items that you have decided to buy.