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Βιογραφικό Ομιλήτριας

Ms. Mingyan Li is a graduate research assistant in Network Security Laboratory (NSL) at University of Washington, Seattle. She is currently pursuing her Ph.D. degree in the area of multiuser security and privacy with applications to medical security systems, vehicular ad hoc networks (VANET) and sensor networks. She is a recipient of the 2003, Outstanding Graduate Student Award of Electrical Engineering Department and a recipient of the 2002 outstanding TA award

Πληροφορίες

While Internet technologies facilitate storing, accessing, and sharing of data by multiple users, they pose challenges in privacy assurance of data as well as users. In this talk, we will present our on-going research related to privacy protection in two multiuser applications. The first part of the talk addresses the privacy of electronic health records. To protect patient privacy, the access to the electronic health record has to be restricted to authorized users only, both during transmission and after data is accessed by authorized recipient. While the enforcement of confidentiality and access control of the EHR have been studied in detail, the problem of enhancing privacy protection after data reception was only recently identified. We study this hard problem by enabling tracing medical images in a group communication environment. We propose a fingerprint model suitable for many-to-many multicast, which is computationally efficient and scalable in user storage and key update communication. We identify open problems. The second part of the presentation addresses privacy in vehicular ad hoc networks (VANET). As a vehicle can benefit from wireless communications with other vehicles and road infrastructure for navigation safety and service access, the communication can be misused by an adversary to track vehicles and hence lead to breach of the location privacy of the vehicle’s user. To enhance location privacy in VANET, we study the problem of mitigating the unauthorized tracking of broadcast communications of the vehicles by leveraging the group navigation of vehicles. We will also present a scheme for anonymous access to location based service (LBS) applications in VANET based group navigation. We conclude with summary and future work.

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