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学术报 告：Secure and Authenticated DTV Broadcasting for Emergency Alert

报  告  人：Prof.  David Lee，The Ohio State University ， IEEE Fellow

报告时 间：2005年4月18日上 午10∶00—11∶30

报告地 点：FIT大 楼1区312

报告语种：英文

报告题 目：Secure and Authenticated DTV Broadcasting for Emergency Alert

报告摘 要：

Alerting capability is crucial for the prompt response to natural disasters and terrorists’ attacks.

There is an urgent need from the US government to fill a critical gap in the Department of Homeland Security's plan for responding to terrorist threats by notifying key personnel in federal, state and local agencies the moment a threat is detected. There is a new emerging technology that uses Digital TV (DTV) for the needed alerting capabilities.

This is a report of work in progress jointly with WOSU that has established such a DTV broadcast system. It can deliver emergency notifications to first responders, emergency managers and public safety forces. It is a point-to-multipoint broadcast of wireless broadband data, impossible to disrupt or interfere, simple, easy to maintain, of low cost, under the full control of the central management station, with rapidly deployable receiving units, wide area coverage, and interoperable with legacy IT systems.

However, a major challenge for its application is the secure and authenticated message delivery. Due to a large number of receivers, symmetric key scheme is not secure. Public key schemes are inappropriate; they are designed for a group of users to communicate with each other while the DTV alert is a centralized one-way broadcast system. Furthermore, we need to distinguish the receivers by the message types and contents and, more importantly, the security classifications.

We are developing an emergency message broadcast scheme that suits the needs for our application: (1) Designed for a centralized broadcast alert system; (2) Simple, efficient and secure – no information of encryption/decryption keys are in the public domain; (3) All the received messages are authenticated; and (4) A key creation and distribution scheme that distinguish receivers by the message types and contents and, more importantly, the security classifications.

Biography: David Lee was born in Hong Kong and grew up in Suzhou. After receiving a Ph.D. in Computer Science from Columbia University in 1985, he joined Bell Laboratories Research, became Director of Networking Research Department in 1998, was promoted to Vice President in 1999, and founded Bell Labs Research China in Beijing. In 2004, he joined The Ohio State University, as an Ohio Board of Regents Distinguished Professor, Chair of the Ohio State University Consortium for Information Assurance and Security Education and Research, and Director of Networking Research Laboratories. He has more than 100 technical publications in journals and referenced conferences and 5 US patents. He is an IEEE Fellow, Senior Editor of IEEE Journal of Selected Areas of Communications, Steering Committee Chair of IEE