Krijn Reijnders

This is my website, which serves to host some of my (professional) writings, some thoughts that I have at times and an online version of my cv.

post-quantum cryptography

My research focuses on post-quantum cryptography, specifically code-based and isogeny-based schemes. Essentially, I look at isogenies and isometries.

Within isogenies, my more specific research interests are (applications of) pairings and Kummer surfaces. Within isometries, I focus on the interplay between automorphism groups and matrix code equivalence.

the isogeny club

For the first two years, I organized The Isogeny Club, together with Jonathan Komada Eriksen (www). Since, May 2024, I have stepped back and taken a more advisory role, with Maria Corte-Real Santos (www) taking over as co-host of the bi-weekly virtual seminar for young isogenists. The Isogeny Club also hosts the Brainstorm Days as an affiliated event (for all isogenists) at Eurocrypt, where we brainstorm on cutting-edge ideas in isogeny-based cryptography.