The aim of this paper is to propose a solution for a potential vulnerability in mobile proximity payment. The mobile proximity payment is the evolution of the card payment whose reference standard is EMV (Europay, MasterCard and VISA). A mobile proximity payment transaction is performed via radio waves so there is the possibility to intercept the communication with the point-of-sale and also to activate the payer device, in a range of 10 cm. The EMV protocol assumes that within a range of 10 cm card fraud is hard to perform, moreover IC card capable point of sale are considered safe a priori, while the card must authenticate itself. This allows a leak of card information. In this paper we describe a possible solution to this problem, adding a safe level to the EMV protocol in the case of mobile proximity payment transactions. Our solution is a Needham-Schroeder based protocol, that guarantees authentication and confidentiality between the entities involved in the payment
In this paper we analyze the problems that are encountered in mobile ticketing systems where proximity technologies are used for validation and check of the e-tickets, leaving out the stage of ticket purchase, which can be done either remotely or in proximity. We have identified several security issues that are common in mobile ticketing and we propose some methods to solve them. In addition, we propose a protocol to provide secure validation and check of e-tickets. The innovation of this protocol is that it provides a good level of security and it is sufficiently abstract to be independent of NFC operating mode; that is it works in classical Card Emulation mode making use of Secure Element and it is implementable in Peer-to-Peer mode too
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