报告题目：Security, Privacy and Accountability in Cryptocurrencies

报告人：杨国民 教授

报告时间：09:00-10:30, 2018年12月7日

报告地点：长安校区 博物馆附楼三层会议室(S314)

报告摘要：The success of blockchain-based cryptocurrencies has brought a new era in digital currency research and development. User privacy is one of the attractive features and design goals of cryptocurrency. One-time address mechanisms, such as deterministic wallet and stealth address, have been proposed and adopted by several cryptocurrencies under the purpose of enhancing user privacy and account/wallet management. In this talk, we first look at the security vulnerability in the existing one-time address mechanisms and present a new solution to address the problem. We then discuss the need and technique for balancing privacy and accountability in cryptocurrency, followed by some remaining challenges and open problems in the research domain.

报告人简介：Dr. Guomin Yang is a Senior Lecturer at the Institute of Cybersecurity and Cryptology (iC2), School of Computing and Information Technology, University of Wollongong (UOW), Australia. In 2015, he received the Australian Research Council Discovery Early Career Researcher Award. He was admitted to the Mathematics Department of Fudan University in 1999, and moved to City University of Hong Kong in 2000 after being awarded the Hong Kong Jockey Club Scholarship. He received the Bachelor, Master and PhD degrees in Computer Science from City University of Hong Kong in 2004, 2006 and 2009, respectively. In 2007, as one of eight awardees around the world, he received the (ISC)2 information security scholarship from the International Information Systems Security Certification Consortium. Before joining UOW in 2012, he was a Research Scientist at the Temasek Laboratories, National University of Singapore. Guomin's research interests are applied cryptography and network security. He has published over 100 research papers that appeared at many highly respected venues, such as ACM TISSEC, IEEE TIFS and TDSC, CRYPTO, ASIACRYPT, PKC, CT-RSA, ESORICS, etc. He is on the editorial board of Theoretical Computer Science (Elsevier) and an IEEE senior member.