This book investigates decentralized trust-based privacy-preserving solutions in smart cities. The next four chapters each detail a decentralized trust-based scheme, focusing respectively on privacy-preserving identity management, cross-domain authentication, data analytics, and data search, in specific use cases.

Dr. Cheng Huang is currently a Research Fellow with the Department of Electrical and Computer Engineering, University of Waterloo. He received his B.Eng. and M.S. degree in information security from Xidian University, China, in 2013 and 2016 respectively, and received the Ph.D. degree in Electrical and Computer Engineering, University of Waterloo, ON, Canada in 2020. His research interests are in the areas of security and privacy in vehicular networks, cloud/edge computing, and blockchain. Dr. Huang has published over 60 papers on high-reputation journals and conferences, such as IEEE TDSC, JSAC, TVT, and TII, and has received several best paper awards from IEEE ICC, GLOBECOM, and ICCC. Dr. Huang serves as the associate editor for Peer-to-Peer Networking and Applications (Springer), the publicity chair of ICA3PP’22, PST’23, SustainCom’23, and the TPC members of many conferences, including IEEE ICC and GLOBECOM.

Dr. Xuemin (Sherman) Shen received the Ph.D.degree in electrical engineering from Rutgers University, New Brunswick, NJ, USA, in 1990. He is a University Professor with the Department of Electrical and Computer Engineering, University of Waterloo, Canada. His research focuses on network resource management, wireless network security, Internet of Things, 5G and beyond, and vehicular networks. Dr. Shen is a registered Professional Engineer of Ontario, Canada, an Engineering Institute of Canada Fellow, a Canadian Academy of Engineering Fellow, a Royal Society of Canada Fellow, a Chinese Academy of Engineering Foreign Member, and a Distinguished Lecturer of the IEEE Vehicular Technology Society and Communications Society. Dr. Shen received “West Lake Friendship Award” from Zhejiang Province in 2023, President's Excellence in Research from the University of Waterloo in 2022,  the Canadian Award for Telecommunications Research from the Canadian Society of Information Theory (CSIT) in 2021, the R.A. Fessenden Award in 2019 from IEEE, Canada, Award of Merit from the Federation of Chinese Canadian Professionals (Ontario) in 2019, James Evans Avant Garde Award in 2018 from the IEEE Vehicular Technology Society, Joseph LoCicero Award in 2015 and Education Award in 2017 from the IEEE Communications Society (ComSoc), and Technical Recognition Award from Wireless Communications Technical Committee (2019) and AHSN Technical Committee (2013). He has also received the Excellent Graduate Supervision Award in 2006 from the University of Waterloo and the Premier’s Research Excellence Award (PREA) in 2003 from the Province of Ontario, Canada. He serves/served as the General Chair for the 6G Global Conference’23, and ACM Mobihoc'15, Technical Program Committee Chair/Co-Chair for IEEE Globecom’24, 16 and 07, IEEE Infocom’14, IEEE VTC’10 Fall, and the Chair for the IEEE ComSoc Technical Committee on Wireless Communications. Dr. Shen is the President of the IEEE ComSoc. He was the Vice President for Technical & Educational Activities, Vice President for Publications, Member-at-Large on the Board of Governors, Chair of the Distinguished Lecturer Selection Committee, and Member of IEEE Fellow Selection Committee of the ComSoc. Dr. Shen served as the Editor-in-Chief of the IEEE IoT JOURNAL, IEEE Network, and IET Communications.