When Igor goes to buy a coffee with his credit card, the cashier starts by asking Igor for a Picture ID, then the cashier swipes Igor's card (which dials the head office to make sure there is money), finally a receipt is
printed. After all that Igor gets his coffee. Let's look at the 3 A's in this transaction
- Authentication - Prove the entity is the entity - Ensure Igor is Igor by making sure the picture on his drivers license matches his face.
- Authorization - Prove an entity is allowed to do something - Ensure Igor is allowed to place a 5$ charge on his credit card.
- Auditing - Record what has occurred - Write down that a coffee was purchased.
|Authentication, Authorization, and Auditing in the coffee shop|