Security Enhanced EMV-Based Mobile Payment Protocol

الملخص EN

Near field communication has enabled customers to put their credit cards into a smartphone and use the phone for credit card transaction.

But EMV contactless payment allows unauthorized readers to access credit cards.

Besides, in offline transaction, a merchant’s reader cannot verify whether a card has been revoked.

Therefore, we propose an EMV-compatible payment protocol to mitigate the transaction risk.

And our modifications to the EMV standard are transparent to merchants and users.

We also encrypt the communications between a card and a reader to prevent eavesdropping on sensitive data.

The protocol is able to resist impersonation attacks and to avoid the security threats in EMV.

In offline transactions, our scheme requires a user to apply for a temporary offline certificate in advance.

With the certificate, banks no longer need to lower customer’s credits for risk control, and users can have online-equivalent credits in offline transactions.