学术报告:1.Cryptographic Techniques for Transaction Privacy in Blockchain-Based Applications;2.可修订数字签名;3.Charging Me and I Know Your Secrets: Design and Defence of Phone Charging Attacks

审核发布:数字与信息学院 来源单位及审核人: 发布时间:2018-11-14浏览次数:887

学术报告一:Cryptographic Techniques for Transaction Privacy in Blockchain-Based Applications

报告人:区文浩 教授
时 间:2018年11月15日 14:00
地 点:数学与信息学院201报告厅

报告摘要:
Conceptualized 10 years ago as a core component of Bitcoin, blockchain has gained a vast amount of interest. Informally speaking, a blockchain is a distributed, shared, and immutable ledger that maintains a growing list of ordered records. It became extremely popular among the industries in the last few years. Many companies are exploring applications of blockchain beyond cryptocurrencies.
In this talk, the speaker will introduce blockchain and highlight some of the latest development in this area. In particular, we will discuss how cryptography helps in the protection of transaction privacy in blockchain-based applications, and why it is crucial. Topics covered include cryptographic primitives such as ring signatures and zero-knowledge proofs. Finally, we will review challenges related to the adoption of blockchain technologies.

报告人简介:
Dr. Man Ho Au received his PhD degree from the University of Wollongong in 2009. He is now an assistant professor and a director of the Monash-PolyU-CC Joint Lab on Blockchain and Cryptocurrency Technologies at the Department of Computing, the Hong Kong Polytechnic University. His research interests include information security and blockchain technology. He has published over 130 refereed papers in top journal and conferences, including ACM CCS, ACM SIGMOD, NDSS, IEEE TIFS, TC, TKDE, etc. He is a recipient of the 2009 PET runner-up award for outstanding research in privacy enhancing technologies. He received best paper awards from conferences including ACISP 2016 and ISPEC 2017. According to Google Scholar, his h-index is 33 and his work has been cited over 3300 times. He is an expert member of the China delegation of ISO/IEC JTC 1/SC 27 working group 2 - Cryptography and security mechanisms and a committee member of the Hong Kong Blockchain Society R&D division. 



学术报告二:可修订数字签名

报告人:黄欣沂 教授
时 间:2018年11月15日 14:40
地 点:数学与信息学院201报告厅

报告摘要:
具有同态性质的数字签名支持对数据的认证修改。可修订数字签名(Redactable Signatures)是一类具体的同态数字签名,支持对已认证数据的删除操作。本报告将结合应用需求介绍可修订数字签名的性质、定义和近期的工作。

报告人简介:
黄欣沂,福建师范大学数学与信息学院教授,博士生导师,长期从事数字签名、身份认证等方面的研究,研究工作发表于ACM CCS、PKC、IEEE Transactions等学术会议和期刊,获教育部自然科学奖一等奖(排名第3);担任中国密码学会理事、青年工作委员会主任委员、IEEE TDSC等学术期刊编委、AsiaCCS2016等学术会议主席、ESORICS等学术会议程序委员会委员;入选教育部青年长江学者,获得优秀青年科学基金项目资助。



学术报告三:Charging Me and I Know Your Secrets: Design and Defence of Phone Charging Attacks

报告人:蒙威志 教授
时 间:2018年11月15日 15:20
地 点:数学与信息学院201报告厅

报告摘要:
The increasingly high demand for smartphone charging in people's daily lives has apparently encouraged much more public charging stations to be deployed in various places (e.g., shopping malls, airports). However, these public charging facilities may open a hole for cyber-criminals to infer private information and data from smartphone users. In the literature, smartphone security has received much attention, while most existing research focuses mainly on the detection of malicious applications (malware). In comparison, phone-charging threats are often ignored by the literature. This talk begins by introducing existing charging attacks, including our developed Juice Filming Charging (JFC) attack, which can steal users' private information through automatically video-capturing phone screen via a standard USB connector. The attack efficiency relies on the observations that users are not aware of any risk when charging their phones in public places and that most users would interact with their phone during the charging procedure. Then, this talk introduces several potential solutions to defend against this kind of attack.

报告人简介:
Dr. Weizhi Meng is currently an assistant professor in the Cyber Security Section, Department of Applied Mathematics and Computer Science, Technical University of Denmark (DTU), Denmark. He obtained his Ph.D. degree in Computer Science from the City University of Hong Kong (CityU), Hong Kong. Prior to joining DTU, he worked as a research scientist in Infocomm Security (ICS) Department, Institute for Infocomm Research, A*Star, Singapore, and as a senior research associate in CS Department, CityU. He won the Outstanding Academic Performance Award during his doctoral study, and is a recipient of the Hong Kong Institution of Engineers (HKIE) Outstanding Paper Award for Young Engineers/Researchers in both 2014 and 2017. He is also a recipient of Best Paper Award from ISPEC 2019, and Best Student Paper Award from NSS 2016. His primary research interests are cyber security and intelligent technology in security, including intrusion detection, smartphone security, biometric authentication, HCI security, trust computing, blockchain in security, and malware analysis. He served as program committee members for 20+ international conferences. He has been or will be a co-PC chair for IEEE Blockchain 2018 and IEEE ATC 2019. He also served as guest editor for FGCS, JISA, Sensors, CAEE, IJDSN, SCN, WCNC, etc.


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