Research Fields

Development of High-Speed Public-Key Cryptographic Algorithms based on Mathematical Hard Problems

There have been reported various hacking cases on the Internet of Things(IoT) including smart fridges, automated toilets, self-driving cars and healthcare devices. Cryptographic algorithms can prevent economic and personal damages caused by these hacking in IoT environments. There are restrictions on using current international standard public-key cryptographic algorithms for resource constrained IoT devices due to their slow speed and high energy consumption. The cryptographic technology research team of NIMS is developing next generation public-key cryptographic algorithms suitable for IoT devices and secure against quantum computing attacks.

Key Research Content

Security analysis of public-key cryptographic algorithms based on various mathematical hard problems
Design of new cryptographic algorithms, their security analysis against algebraic attacks and optimal implementations on resource-constrained IoT devices
Security analysis of public-key cryptographic algorithms against side-channel attacks and study on their countermeasures
Applications of the public-key cryptographic algorithms to device authentication and Blockchain
Design of privacy-preserving protocols based on the cryptographic algorithms with anonymity, unlinkability and traceability

Current International Standard Public-Key Crytography : RSA and ECC(Elliptic Curve Cryptosystem) ※ Factorization result if RSA 512-bit composite number and a cubic equation of elliptic curve used in ECC / Public-key Crypto graphic Algorithm based in Multivariate Quadratic Equations in On-going Project ※ An example of a public-key cryptographic algorithm based on the hardness of solving large systems of multivariate quadratic equations.
If one can find a solution to the system then the cryptographic algorithm is broken.