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— In this paper, we introduce an efficient conditional privacy preservation (ECPP) protocol in vehicular ad hoc networks (VANETs) to address the issue on anonymous authentication for safety messages with authority traceability. The proposed protocol is characterized by the generation of on-the-fly short-time anonymous keys between On-Board Units (OBUs) and(More)
—Delay-tolerant networks (DTNs) provide a promising solution to support wide-ranging applications in the regions where end-to-end network connectivity is not available. In DTNs, the intermediate nodes on a communication path are expected to store, carry, and forward the in-transit messages (or bundles) in an opportunistic way, which is called opportunistic(More)
— Privacy threat is one of the critical issues in network coding, where attacks such as traffic analysis can be easily launched by a malicious adversary once enough encoded packets are collected. Furthermore, the encoding/mixing nature of network coding precludes the feasibility of employing the existing privacy-preserving techniques, such as Onion Routing,(More)
— Searching for a vacant parking space in a congested area or a large parking lot and preventing auto theft are major concerns to our daily lives. In this paper, we propose a new smart parking scheme for large parking lots through vehicular communication. The proposed scheme can provide the drivers with real-time parking navigation service, intelligent(More)
—Cognitive Radio Network (CRN) is regarded as a promising way to address the increasing demand for wireless channel resources. It solves the channel resource shortage problem by allowing a Secondary User (SU) to access the channel of a Primary User (PU) when the channel is not occupied by the PU. The latest FCC's rule in May 2012 enforces database-driven(More)
Collaborative spectrum sensing is regarded as a promising approach to significantly improve the performance of spectrum sensing in Cognitive Radio Networks (CRNs). However, due to the open nature of wireless communications and the increasingly available software-defined radio platforms, collaborative spectrum sensing also poses many new research challenges,(More)
Keywords: Secure computation auditing Secure storage Privacy-cheating discouragement Designated verifier signature Batch verification Cloud computing a b s t r a c t Cloud computing emerges as a new computing paradigm that aims to provide reliable, cus-tomized and quality of service guaranteed computation environments for cloud users. Applications and(More)