报告人：Prof. Ruizhong Wei  (卫瑞中)，加拿大Lakehead 大学

报告时间：2018年4月4日(周三)上午10：00

地点：维格堂319教室

报告摘要:  All or nothing transform (AONT) are used in encryption and data security. In this talk, we will introduce the concept of all or nothing transform and its constructions. Then we will focus on the linear all or nothing transforms. We will discuss generalized AONT. Some special cases of generalized AONT will be investigated in details. Computer search results suggested some patterns of these cases, but in general the existence of the structure with the patterns has not proved. Some interesting open questions will be briefly discussed.