Professor,Universitat Rovira i Virgili
Security and privacy in federated and fully decentralized learning via co-utility
Blockchain Technology and System
|Abstract||This talk starts with the brief introduction of blockchain and the milestones in development process. Through the analysis of cutting-edge blockchain technologies, this talk summarizes the critical challenges in the blockchain research area. Furthermore, this talk presents a blockchain system named Haihe-Smart-Chain developed by the research group, and its key techniques. Finally, this talk discusses the future directions of blockchain.|
|Biography||Keqiu Li is a professor and dean of the College of Intelligence and Computing, Tianjin University, China. He is the recipient of National Science Foundation for Distinguished Young Scholars of China. He received his bachelor’s and master’s degrees from the Department of Applied Mathematics at the Dalian University of Technology in 1994 and 1997, respectively. He received the Ph.D. degree from the Graduate School of Information Science, Japan Advanced Institute of Science and Technology in 2005. He keeps working on the topics of blockchain system, mobile computing, datacenter, and cloud computing. He has more than 150 papers published on prestigious journals or conferences such as TON, TPDS, TC, TMC, MobiCom, INFOCOM, ICNP, etc.|
Authentic and Trustworthy Internet Architecture Built Upon Blockchain
|Abstract||Internet is the foundation of cyberspace. However, incomplete design and implementation of protocol stacks, and incomplete design of packet forwarding mechanisms could be exploited by malicious attacks. It is also difficult to identify the stealthy and low-speed malicious traffic in the complex and dynamic network. After analyzing the attack path and cross-layer interactions security of network protocols, this report will introduce an authentic and trustworthy new generation internet architecture built on blockchain, which makes the Internet more secure and trustable by improving the security of protocol interaction, packet forwarding and transport mode guided by the end-to-end principal of the Internet. A stable byzantine fault tolerant consensus mechanism will also be presented in this report, which can be used to improve the effectiveness and stability of blockchain.|
Prof. Ke Xu is a Ph.D. supervisor and the vice-director of the Department of Computer Science and Technology, Tsinghua University. He has been awarded China National Funds for Distinguished Young Scientists and Beijing Outstanding Young Scientist Program. He is also a member of Beijing Strategic Talents.
Xu’s main research interests include computer network architecture, Cybersecurity, and blockchain system. Xu received the second prize of National Science and Technology Progress Award, the second prize of National Technological Invention Award, the first prize at the provincial and ministerial level 4 times, Zhongchuang software talent award, and Young Scientist Award of China Computer Federation. He also serves as a director and fellow of the Chinese Institute of Electronics.
Xu has published several representative articles in top international conferences and journals such as ACM SIGCOMM, ACM CCS, IEEE/ACM TON, and IEEE Communication Magazine. In the past five years, he has been granted more than 40 Chinese invention patents and more than 10 United States Utility Patents. Moreover, he is the author of “The Principles and Practice of Cyber Security”, “Advanced Computer Networks (2nd edition)”, “Algorithms Rule the World: The Invisible Order of the Intelligent Economy”, “New Cyber Economy”, “Computer Network Architecture——Design, Modeling, Analysis and Optimization”, and many other books.