学术讲座【Using Meaningful Digital Shadow Images to Recover a Secret Message】
时间:2018年05月24日 (星期四)上午10:20 -11:30
地点:理工北楼601报告厅
主办:数学与信息学院, 福建省网络安全与密码技术重点实验室
主讲:逢甲大学,张真诚教授
参加对象:数信学院感兴趣的教师和研究生
专家简介:张真诚博士现任逢甲大学讲座教授,中正大学荣誉教授与“清华”大学合聘教授。他对于信息安全、密码学与多媒体图像处理三大领域进行长期而深入之研究,于国内外学术期刊、国际学术会议与学术专书共计发表研究论文数百余篇及学术专书36册,研究成果丰硕。2010年获得DBLP数据库论文成果世界排名第二;根据Google Scholar的统计,共获引用26930余次,H影响因子为78次。多项创新发明、理论、技术应用已被收录于国外的教科书。此外,张教授亦曾主持各类基金项目110余项,并有17项专刊(含1项美国专利和2项中国专利)。由于在研究上的卓越贡献,张教授于1998年当选为国际电子电机工程师学会会士(IEEE Fellow)与英国电机工程师学会会士(IET Fellow)。历年指导博士生已毕业者56人,硕士生已毕业者177人。2012年获亚洲信息安全领域终身成就奖。
报告摘要:Secret sharing is an important technique to ensure well protection of transmitted information by dividing a secret message into several shadows that are held among a set of participants. In this talk, I will introduce a novel secret sharing method using two meaningful digital images with cheating detection. It allows a dealer to share a secret message into two different meaningful images through the guidance of the turtle shell magic matrix. Then, after performing a permutation operation, two meaningful shadow images are generated and distributed to two participants. The secret message can be reconstructed only when both participants cooperate by releasing real shadow images. Honest participant in this method can easily detect whether the other participant is cheating via presenting a faked shadow. Experimental results show that this method ensures high quality of shadow images and good embedding capacity. The cheating detection process is also effective and very easy to implement