Construction and Development of
Mathematical Foundation for Efficient and Secure
Advanced Cryptography

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What is K Pro High-Performance Encryption PQC?

The objective of this research project is to develop advanced cryptographic schemes that remain secure even against various threats such as attacks by quantum computers and side-channel attacks. Advanced cryptography enables the realization of various cryptographic protocols with wide-ranging applications, including fully homomorphic encryption, functional encryption, blind signatures, ring signatures, and secure computation. We promote research and development on the mathematical structures of underlying computational problems and on efficient implementation algorithms for advanced cryptographic schemes based on post-quantum cryptographic primitives, such as lattice-based cryptography, code-based cryptography, multivariate polynomial cryptography, and isogeny-based cryptography.

This research project is supported by JST K Program Grant Number JPMJKP24U2, Japan.

NEWS

  • 2026/03/05 Prof. Tsuyoshi Takagi delivered an invited talk on “Research Activities on Post-Quantum Cryptography in Japan” in International Exchange and Collaboration in PQC Migration of Financial Industry (IC-PMF).
  • 2026/02/05 Mr. Hiroki Okada delivered an invited talk on “Low Communication Threshold FHE from Standard (Module-)LWE” in FHE.org Meetups.
  • 2025/12/17 Prof. Junji Shikata delivered an invited talk on “Post- Quantum Advanced Cryptography and its Application to B5G” in the 9th International Conference on Mobile Internet Security (MobiSec2025).
  • 2025/12/17 Dr. Hyungrok JO received TTA Best Paper Award (MobiSec2025).
  • 2025/12/17 Mr. Sohto Chiku received KISTI Best Paper Award (MobiSec2025).
  • 2025/11/30 Mr. Hideki Asanuma received Best Poster Award in IWSEC 2025.
  • 2025/11/06 Prof. Junji Shikata delivered an invited talk on “Research and Development Project Update on Next-Generation Cryptographic Technology” in the 9th Franco-Japanese Cybersecurity Workshop.