Neue Herausforderungen in der Netzsicherheit

Near Field Communication (NFC) based applications seem to be appealing in a world where everything moves away from plastic and contact based services. This project gives an overview on NFC and its implementation in mobile phones together with SIM based security features. Furthermore it presents mobile payment as one example of a SIM secured NFC based application on mobile phones, presents its architectures and concludes with some challenges that still need to be solved. 1 Near Field Communication Near Field Communication (NFC) is an international standard to transmit over very short distances (usually about 4cm). It supports three modes of communication: 1. Card Emulation: This mode is supposed to replace existing contactless applications like boarding passes, credit and debit cards, and public transport ticket. 2. Tag Reading: Location based services are a genuine application for tag reading based NFC. A tag will be shown at several location like on an ad. A reader such as an NFC based mobile phone is able read that tag and trigger an application or service (for instance access the mobile web page associated with that ad). 3. Peer to Peer: As the name suggests, the peer-to-peer mode allows to equal NFC endpoints to communicate and securely transfer content and data. The Nokia 5140 was the first mobile phones that came with an NFC reader [1]. Today, the most popular device with NFC is probably the Samsung Nexus S [2]. For the remainder of this paper, card emulation mode is assumed.