Online card authentication is performed as part of the real-time authorization process, similar to magnetic stripe, allowing the card issuer to verify the card further and authorize the transaction. Offline card authentication uses EMV-defined asymmetric cryptography to allow merchants to replace the physical inspection of a card with electronic card authentication before requesting authorization from the card issuer. In the EMV specification, two methods are defined as offline card authentication and online card authentication. One of the critical features of EMV is authenticating the card to make sure it is not a clone or a counterfeit. The card and terminal follow a protocol process established by the EMV to conduct a dialogue to carry out their respective risk management processes.The terminal selects the appropriate EMV implementation and uses a data set associated with each payment brand to implement the brand’s implementation requirements.POS terminal defines which payment brand has the application on the card.A cardholder inserts an EMV chip card into a reader or touches the card in the event of a contactless transaction.The EMV processing authorization process is as follows: Online and offline signatures are created using both asymmetric and symmetric encryption keys and securely stored algorithms and operated on the card. The EMV transaction verification process relies on the generation of dynamic data (digital signature) to verify a card or device’s identity. EMV offers advanced card authentication methods based on dynamic data and powerful cryptographic techniques.For example, banks that manage multiple card portfolios may configure some cards to prefer PINs and other cards to prefer a signature. ![]()
0 Comments
Leave a Reply. |