2018年7月12-16日，美国密苏里州大学堪萨斯分校Lein Harn教授访问重点实验室。13日上午在旗山校区理工楼北楼601报告厅做了题为“How to share a secret efficiently over network”（如何网络中有效地分享秘密）的学术报告。报告中，Harn教授首先介绍秘密分享中当前的一些研究热点研究问题；其次，结合其本人研究工作详细介绍了如何把经典的Shamir秘密共享的思想扩展到开放的网络环境中，不仅实现了秘密的有效分享，同时达到了网络用户两两之间建立会话密钥的目的。Harn教授的报告深入浅出，把问题的背景和巧妙的解决方法详细地、直观地向各位与会人员做了介绍。本次报告在与会者中引起了强烈的反响，参加讲座的师生与Harn教授进行了深入的探讨和交流。

专家简介：Lein Harn received the B.S. degree in electrical engineering from the National Taiwan University in 1977, the M.S. degree in electrical engineering from the State University of New York-Stony Brook in 1980, and the Ph.D. degree in electrical engineering from the University of Minnesota in 1984. In 1984, he joined the Department of Electrical and Computer Engineering, University of Missouri- Columbia as an Assistant Professor, and in 1995, he has been promoted as a Full Professor, University of Missouri, Kansas City (UMKC). While at UMKC, he went on development leave to work in Racal Data Group, Florida for a year. His research interests include cryptography, network security, and wireless communication security. He has published over hundred research journal papers on digital signature design and applications, and wireless and network security. He has written two books on security. He is currently investigating new ways of using secret sharing in various applications.