This repository contains the ARMv8 implementation of Kyber. Kyber is a key encapsulation mechanism (KEM) and it is a finalist in round 3 of the NIST PQC standardization project.

The paper of this implementation ("Kyber on ARM64: Compact Implementations of Kyber on 64-bit ARM Cortex-A Processors") will be published in International Workshop on Post-quantum Cryptography for Secure Communications (PQC-SC) workshop 2021.

Benchmark results were measured both ARM and Apple chips. The ARM board is on Google Pixel 3 Android smartphone. The processor (Snapdragon 845) on it has 8 cores including 4 of ARM Cortex-A53 (@1.77 GHz) and 4 of ARM Cortex-A75 (@2.8 GHz) based. Performance results are taken by using Cortex-A75 processor. The executable is aarch64 cross-compiled on Linux operating system (Ubuntu 20.04) with gcc-9. The Apple board is on iPad mini 5-th generation. The processor (A12 Bionic) on it has 6 cores including 2 of Vortex (@2.49 GHz) and 4 of Tempest (@1.54 GHz) based. Performance results are taken by using Vortex processor on Apple operating system (iPadOS 14.3). The reference C code is originally obtained from Kyber GitHub Repository.

Comparison of clock cycles for functions of Kyber schemes on 64-bit ARM [email protected] GHz. (Ref-C: Reference C implementation. Opt: Our optimized implementation.)

Comparison of clock cycles for Kyber schemes. (Ref-C: Reference C implementation. Opt: Our optimized implementation.)

• Pakize Sanal, Florida Atlantic University, Boca Raton, USA: ([email protected])
• Emrah Karagoz, Florida Atlantic University, Boca Raton, USA: ([email protected])
• Reza Azarderakhsh, Florida Atlantic University, Boca Raton, USA: ([email protected])
• Hwajeong Seo, Hansung University, Seoul, South Korea: ([email protected])
• Mehran Mozaffari-Kermani, University of South Florida, Tampa, USA: ([email protected])