12月23日:Yi Mu :Strongly Leakage-Resilient Authenticated Key Exchange

报告题目: Strongly Leakage-Resilient Authenticated Key Exchange

报告人: Yi Mu 教授

主持人：董晓蕾

报告时间：2016年12月23日 14:00

报告地点：理科大楼B1002

报告摘要:

Authenticated Key Exchange (AKE) protocols have been widely deployed in many real-world applications for securing communication channels. In this talk, we revisit the security modelling of leakage-resilient AKE protocols, and show that the existing models either impose some unnatural restrictions or do not sufficiently capture leakage attacks in reality. I will introduce a new strong yet meaningful security model, named challenge-dependent leakage-resilient eCK (CLR-eCK) model, to capture challenge-dependent leakage attacks on both long-term secret key and ephemeral secret key (i.e., randomness). I will present a general framework for constructing one-round CLR-eCK-secure AKE protocols based on smooth projective hash functions and a practical instantiation of the general framework based on the Decisional Diffie-Hellman assumption without random oracle. The result shows that the instantiation is efficient in terms of the communication and computation overhead and captures more general leakage attacks.

报告人简介：

Professor Yi Mu received his PhD from the Australian National University in 1994. He is currently a full professor and Director of Centre for Computer and Information Security Research at University of Wollongong, Australia. He was the Head of School of Computer Science and Software Engineering at University of Wollongong during 2011-2015. His current research interest includes cryptography, information security and quantum cryptography. He has published over 400 research papers, including over 160 journal papers and many papers at top-tier cryptography conferences such as Eurocrypt, Asiacrypt, PKC, CT-RSA, FSE, etc. He has served as program chair and member of program committee over 200 conferences including ACM CCS, ESORICS, ACISP, AisaCCS, etc. and is currently a member of the steering committees of AsiaCCS, CANS and ProvSec. Professor Yi Mu is the editor-in-chief of International Journal of Applied Cryptography and serves as associate editor for nine other international journals. He is a senior member of the IEEE. Further information about Professor Yi Mu can be found at http://www.uow.edu.au/~ymu