| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and system for securing an electronic financial transaction performed over a mobile network infrastructure.SOLUTION: When a transaction in a certain user account is performed from more than one mobile communication device, or when data communication in the transaction is transmitted from more than one mobile communication device or from a mobile communication device other than a mobile communication device registered at the beginning, it is determined that a cloning attack to the security of a mobile payment system occurs, a first counter in each data communication message, a second counter at a transmission end, and a third counter at a reception end are used to give increments to the counters during the transmission and reception of the data communication message, and the cloning attack is detected by performing matching of the counters at the reception end. |
