CryptoDB
Ming-Hsien Tsai
Publications
Year
Venue
Title
2022
TCHES
Verified NTT Multiplications for NISTPQC KEM Lattice Finalists: Kyber, SABER, and NTRU
Abstract
Postquantum cryptography requires a different set of arithmetic routines from traditional public-key cryptography such as elliptic curves. In particular, in each of the lattice-based NISTPQC Key Establishment finalists, every state-ofthe-art optimized implementation for lattice-based schemes still in the NISTPQC round 3 currently uses a different complex multiplication based on the Number Theoretic Transform. We verify the NTT-based multiplications used in NTRU, Kyber, and SABER for both the AVX2 implementation for Intel CPUs and for the pqm4 implementation for the ARM Cortex M4 using the tool CryptoLine. e extended CryptoLine and as a result are able to verify that in six instances multiplications are correct including range properties.We demonstrate the feasibility for a programmer to verify his or her high-speed assembly code for PQC, as well as to verify someone else’s high-speed PQC software in assembly code, with some cooperation from the programmer.
Coauthors
- Vincent Hwang (1)
- Jiaxiang Liu (1)
- Gregor Seiler (1)
- Xiaomu Shi (1)
- Ming-Hsien Tsai (1)
- Bow-Yaw Wang (1)
- Bo-Yin Yang (1)