Suhri Kim

Improved Ring LWR-Based Key Encapsulation Mechanism Using Cyclotomic Trinomials

2020 · IEEE Access

In the field of post-quantum cryptography, lattice-based cryptography has received the most noticeable attention. Most lattice-based cryptographic schemes are constructed based on the polynomial ring Rq= Zq[x]/f (x), using a cyclotomic polynomial f (x). Until …

Optimized CSIDH Implementation Using a 2-torsion Point.

2020 · IACR Cryptology ePrint Archive

The implementation of isogeny-based cryptography mainly use Montgomery curves, as they offer fast elliptic curve arithmetic and isogeny computation. However, although Montgomery curves have efficient 3- and 4-isogeny formula, it becomes inefficient when recovering the …