[Resource Topic] 2023/290: Improved Key Pair Generation for Falcon, BAT and Hawk

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Improved Key Pair Generation for Falcon, BAT and Hawk

Authors: Thomas Pornin


In this short note, we describe a few implementation techniques that allow performing key pair generation for the Falcon and Hawk lattice-based signature schemes, and for the BAT key encapsulation scheme, in a fully constant-time way and without any use of floating-point operations. Our new code is faster than previously published implementations, especially when running on small embedded systems, and uses less RAM.

ePrint: https://eprint.iacr.org/2023/290

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