Center for Cryptography,
Computer and Network Security

Eiji Okamoto

Professor, Tsukuba University, Tokyo
Adjunct Professor, UW-Milwaukee
Ph.D., Tokyo Institute of Technology, okamoto at cs dot uwm dot edu

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Research Interests

My research interest is in information security and algorithms. Computer cracking, viruses and other computer crimes have recently become serious security problems in information systems. To defend against these threats, one must introduce many kinds of security mechanisms and apply them as integrated security systems. I have been researching theory of cryptography, authentication and access control as security mechanisms, and system implementation of the security mechanisms as secure integrated systems. Algorithms are one of the basic theories of information security. Computational complexity, zero knowledge proof systems, information theory and mathematical programming are being investigated. They are applied to security measures, provable security mechanisms and others. Optimization is important theory in applied mathematics to design cost effective tools.

• Theory of Cryptography

• Design Tool

• Design of Encryption Algorithms

• Digital Signature

• Estimation Tool

• Cryptanalysis of Encryption Algorithms

• Factoring

• System Implementation

• Security Infrastructure,
  Key Management Systems, PKI, Certificate Authorities

• Security Agent

• Identification of Users

• Software Protection:
  Tamper Resistant Software, Copyright Protection

• Electronic Commerce

• Computer Virus Protection

• Security Framework

• Security Integration

• Security Language

• Protocol Verification

• Applied Mathematics

• Mathematical Programming

• Financial Portfolio