Computer Science

Colloquium Details

Group Key Agreement: Theory and Practice

Abstract

Secure group communication is an increasingly popular research area having received much attention in recent years. Since most group communication takes place over the wide-open expanse of the Internet, security is a major concern. The fundamental security challenge revolves around secure and efficient group key management. Centralized key management methods (key distribution) are appropriate for 2-party (e.g., client-server or peer-to-peer) communication as well as for large multicast groups. However, many collaborative group settings require distributed key management techniques. My work focused on secure and efficient distributed group key management techniques for secure group communication system.

The contribution of my work is four-fold: 1) design of two novel distributed key management techniques, 2) rigorous proof of security, 3) implementation and integration with a reliable group communication system, and 4) performance evaluation and experiments. In this talk, I will touch upon all four aspects of this work.

Biography

Yongdae Kim is a Ph.D. candidate in the Computer Science at the University of Southern California. He is currently a visiting researcher at the UC Irvine. He earned his Bachelor's and Master's degree in Mathematics department from the Yonsei University in Seoul, Korea. Yongdae's main research interests are network security and applied cryptography. More information about his research is available at: http://www.ics.uci.edu/~kyongdae