Feng Chia University, Taiwan, China
Professor Chang has worked on many different topics in
information security, cryptography, multimedia image
processing and published several hundreds of papers in
international conferences and journals and over 37 books. He
was cited over 44,608 times and has an h-factor of 95
according to Google Scholar. Several well-known concepts and
algorithms were adopted in textbooks. He also worked with
the National Science Council, Ministry of Technology,
Ministry of Education, Ministry of Transportation, Ministry
of Economic Affairs and other Government agencies on more
than 100 projects and holds 31 patents, including one in US
and sixteen in China. He served as Honorary Professor,
Consulting Professor, Distinguished Professor, Guest
Professor at over 60 academic institutions and received
Distinguished Alumni Award's from his Alma Master's. He also
served as Editor or Chair of several international journals
and conferences and had given almost a thousand invited
talks at institutions including Chinese Academy of Sciences,
Academia Sinica, Tokyo University, Kyoto University,
National University of Singapore, Nanyang Technological
University, The University of Hong Kong, National Taiwan
University and Peking University. Professor Chang has
mentored 7 postdoctoral, 66 PhD students and 202 master
students, most of whom hold academic positions at major
national or international universities. He has been the
Editor-in-Chief of Information Education, a magazine that
aims at providing educational materials for middle-school
teachers in computer science. He is a leader in the field of
information security of Taiwan. He founded the Chinese
Cryptography and Information Security Association,
accelerating information security the application and
development and consulting on the government policy. He is
also the recipient of several awards, including the Top
Citation Award from Pattern Recognition Letters, Outstanding
Scholar Award from Journal of Systems and Software, and Ten
Outstanding Young Men Award of Taiwan. He was elected as a
Fellow of IEEE in 1998, a Fellow of IET in 2000, a Fellow of
CS in 2020, an AAIA Fellow in 2021, a Member of the Academy
of Europe (AE) in 2022, and a Member of the European Academy
of Sciences and Arts (EASA) in the same year for his
contribution in the area of information security. In 2023,
he was awarded the Honorary Ph.D. Degree in Engineering,
National Chung Cheng University, Taiwan.
Speech Title: Sharing Secrets Using Dual Images with
Cheating Detection
Abstract: 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.
