日本九州大学（Kyushu University, Japan）Kouichi Sakurai教授学术报告通知
撰稿人：彭滔 发布时间：2018年06月13日 16:50
题目: "Receipt-freeness" and "Coercion-resistance" of Biometric Authentication Protocols-Toward Cyber-Privacy Requirements
报告人: 日本九州大学（Kyushu University, Japan）Kouichi Sakurai教授
Recently, biometric authentication is applied to various authentication systems in not only closed environment but open network. Since biometric systems require registrants’ enrolled templates and extracted feature of captured samples, compromising the biometric data is serious privacy issue. Therefore, biometric authentication protocols with protection of the biometric data are developed, such as cancelable biometrics, zero-bio, and etc. Security of these protocols originates in leakage of no privacy data by wiretapping, malicious access and etc. in the authentication processes. When this data can be collected and used as an evidence of some user’s authentication process by anyone, this situation causes novel privacy issue. In order to discuss this issue, novel requirements of biometric authentication systems are necessary. As a first step of this argument, we propose defining "receipt-freeness" and "coercion-resistance". These are characteristics of remote biometric authentication protocols which mean a user or a third person do not obtain the above evidence to convince the third person. This paper mentions the case that communication between clients (user) and servers is observable. We analyze whether related biometric authentication protocols satisfies "receipt-freeness" and "coercion-resistance", or not. As a result, we find both of the case which satisfies these properties, and the case which does not satisfy. Finally, we consider and propose some privacy requirements of the remote biometric authentication protocols based upon the results.
Kouichi Sakurai received the B.S. degree in mathematics from the Faculty of Science, Kyushu University in 1986. He received the M.S. degree in applied science in 1988, and the Doctorate in engineering in 1993 from the Faculty of Engineering, Kyushu University. He was engaged in research and development on cryptography and information security at the Computer and Information Systems Laboratory at Mitsubishi Electric Corporation from 1988 to 1994. From 1994, he worked for the Dept. of Computer Science of Kyushu University in the capacity of associate professor, and became a full professor there in 2002.
He had been working with the Institute of Systems & Information Technologies and Nanotechnologies, as the chief of Information Security laboratory, for promoting research co-operations among the industry, university and government under the theme "Enhancing IT-security in social systems". He has been successful in generating such co-operations between Japan, China and Korea for security technologies as the leader of a Cooperative International Research Project supported by the National Institute of Information and Communications Technology (NICT) during 2005-2006. Moreover, in March 2006, he established research co-operations under a Memorandum of Understanding in the field of information security with Professor Bimal Kumar Roy, the first time Japan has partnered with The Cryptology Research Society of India (CRSI). And concurrently he is working also with CyberSecurity Center of Kyushu University (https://cs.kyushu-u.ac.jp/en/), and doing joint project with IIT-Delhi on IoT-security (https://cs.kyushu-u.ac.jp/sicorp/en/). Professor Sakurai has published more than 350 academic papers around cryptography, information security, and CyberSecurity (See his DBLP http://dblp.uni-trier.de/pers/hd/s/Sakurai:Kouichi)