In the context of PCI DSS, hashing must be applied to the entire PAN for the hash code to be considered rendered unreadable. (2) It is computationally infeasible to find two inputs that give the same hash code. (1) It is computationally infeasible to determine the original input given only the hash code, A hash function should have the following properties: Hashing is a one-way (mathematical) function in which a non-secret algorithm takes any arbitrary length message as input and produces a fixed length output (usually called a “hash code” or “message digest”). Process of rendering cardholder data unreadable by converting data into a fixed-length message digest. CVV2 – Card Verification Value 2 (Visa payment cards).PAN CVC2 – Card Validation Code 2 (MasterCard payment cards).CAV2 – Card Authentication Value 2 (JCB payment cards).CID – Card Identification Number (American Express and Discover payment cards).The following list provides the terms for each card brand: The code is uniquely associated with each individual piece of plastic and ties the PAN to the plastic. For American Express payment cards, the code is a four-digit unembossed number printed above the PAN on the face of the payment cards. For Discover, JCB, MasterCard, and Visa payment cards, the second type of card verification value or code is the rightmost three-digit value printed in the signature panel area on the back of the card.CSC – Card Security Code (American Express).CVV – Card Verification Value (Visa and Discover payment cards). ![]() PAN CVC – Card Validation Code (MasterCard payment cards).CAV – Card Authentication Value (JCB payment cards).Referred to as CAV, CVC, CVV, or CSC depending on payment card brand. Data element on a card’s magnetic stripe that uses secure cryptographic processes to protect data integrity on the stripe, and reveals any alteration or counterfeiting.Refers to either: (1) magnetic-stripe data, or (2) printed security features. Also known as Card Validation Code or Value, or Card Security Code.
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