报告题目：Chaos-based image encryption schemes and security analysis

报告人：卢天秀教授，四川轻化工大学

报告时间：2025年11月13日（周四）15:00-16:00

报告地点：20-306

报告摘要：A hybrid chaotic image encryption method is proposed, which is based on an improved two-dimensional logistic-fraction hybrid chaotic map (2D-LFHCM) and DNA algorithm theory (including DNA chaos scrambling and diffusion). While, most chaotic image encryption schemes validate their security through numerical simulations, lacking theoretical analysis. To make up for this deficiency, we investigate the security of an innovative image encryption technique based on a dual-chaotic system from a theoretical perspective. Through cryptanalysis, a chosenplaintext attack method is proposed to break the original encryption scheme. The decryption results show that the original encryption scheme is vulnerable to such attacks and lacks sufffcient security. Furthermore, several suggestions for improvement are provided to enhance its security.

报告人简介：卢天秀，女，三级教授，四川省学术和技术带头人后备人选，四川省科技青年联合会常务理事。博士毕业于电子科技大学应用数学专业，曾两次赴香港城市大学学习，师从IEEE Life Fellow陈关荣教授。近年来主要从事拓扑动力系统理论和混沌密码算法设计方面的研究。发表学术论文80余篇，一作或通讯SCI收录论文50余篇（其中ESI高被引论文4篇）；主持国家自然科学基金、中央引导地方科技发展项目等10余项；曾获四川省数学会应用数学奖1项，自贡市科技奖5项。在国际会议“IWCFTA”上作邀请报告2次，中国数学会年会作推荐报告1次，国际会议“ICAIP”作主会场报告主持人1次，国内会议作报告或主持人10余次。

邀请人：动力系统与非线性分析研究所