FACULTY
Research and Industry-Academia Collaboration
研究?産学連携
WATANABE Yodai
Senior Associate Professor
- Affiliation
- Department of Computer Science and Engineering/Division of Computer Science
- Title
- Senior Associate Professor
Education
- Courses - Undergraduate
- F01 Algorithms and Data Structures, L06 Information Security, M02 Linear Algebra, M03 Calculus
- Courses - Graduate
- CSC01 Information Security, CSC04 Quantum Information
Research
- Specialization
-
Theory of informatics
Statistical science
Information security
Computational science
Computer Science, Statistical Science, Nonlinear Science
- Educational Background, Biography
- Ph.D. and MS from Department of Physics, Graduate School of Science, University of Tokyo BS from Department of Physics, School of Science, University of Tokyo
- Current Research Theme
- Computational Complexity, Cryptography, Dynamical Systems, Information Theory
- Key Topic
- Algorithmic Information Theory, Probabilistic Inference, Secret Sharing
- Affiliated Academic Society
- JPS, MSJ, JSIAM, IPSJ, IEEE
Main research
- Information Security
-
As the world depends more and more on IT, the growing importance of information security is recognized. We conduct extensive research on information security to use IT appropriately and safely. The topics includes theories of cryptography and secret sharing, IoT including motor vehicles and sensors, security management including human activities, and privacy issues in big data.
- Visual and Audio Cryptography
-
The secret sharing (SS) scheme is a cryptosystem which encrypts a secret into multiple shares so that any qualified combination of shares can reconstruct the secret, while no forbidden combination of shares reveals any information about the secret. The visual secret sharing (VSS) scheme encrypts a visual secret into visual shares so that humans can reconstruct the visual secret with their eyes by superposing a qualified combination of visual shares each printed on a transparency. This work proposes VSS schemes in which arbitrary visual secrets can be associated with arbitrary combinations of visual shares.