RFID technology has become popular in many applications; however, most of the RFID products lack security related functionality due to the hardware limitation of the low-cost RFID tags. In this paper, we propose a lightweight mutual authentication protocol adopting error correction code for RFID. Besides, we also propose an advanced version of our protocol to provide key updating. Based on the secrecy of shared keys, the reader and the tag can establish a mutual authenticity relationship. Further analysis of the protocol showed that it also satisfies integrity, forward secrecy, anonymity, and untraceability. Compared with other lightweight protocols, the proposed protocol provides stronger resistance to tracing attacks, compromising attacks and replay attacks. We also compare our protocol with previous works in terms of performance.

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802.16/WiMAX is going to be the most popular technology in wireless communications. In 2006, IEEE 802.16e has been proposed for mobility issue. In order to maintain security, re-authentication should be considered when the mobile station handovers. However, re-authentication often takes latency and consumes power. On the other hand, several fast authentication schemes have been proposed based on preauthentication concept in 802.11/WLAN networks. These schemes provide different methods to enhance the efficiency and security of re-authentication procedure. By using the preauthentication concept, we propose a pre-authentication scheme for WiMAX infrastructures in this paper. Due to flexibility and security, the proposed scheme is combined with the PKI architecture. It provides a secure and fast re-authentication procedure during macro-handover in 802.16/WiMAX networks.

Mobile WiMAX (IEEE 802.16e) is an emerging technology for wireless broadband access network. It provides wider converge and higher bandwidth than conventional wireless technologies. Multicast and Broadcast (M&B) in WiMAX are suitable for multimedia applications such as Pay-TV system because multimedia providers can efficiently distribute the same contents to the users within the same M&B group. Although IEEE 802.16e has defined Multicast/Broadcast Rekeying Algorithm (MBRA) to secure M&B, recent research indicates that MBRA is insecure. In this paper, we propose an efficient rekeying scheme which depends on Linear Ordering of Receivers (LORE) to protect M&B group communication. Our scheme requires O(1) messages for rekeying and addresses the security problem of MBRA. Therefore, our rekeying scheme is suitable for protecting large dynamic groups such as M&B groups. 2008 IEEE Asia-Pacific Services Computing Conference 978-0-7695-3473-2/08 $25.00

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