Cryptology ePrint Archive: Report 2021/1152

Bandersnatch: a fast elliptic curve built over the BLS12-381 scalar field

Simon Masson and Antonio Sanso and Zhenfei Zhang

Abstract: In this short note, we introduce Bandersnatch, a new elliptic curve built over the BLS12-381 scalar field. The curve is equipped with an efficient endomorphism, allowing a fast scalar multiplication algorithm. Our benchmark shows that the multiplication is 42% faster, compared to another curve, called Jubjub, having similar properties. Nonetheless, Bandersnatch does not provide any performance improvement for either rank 1 constraint systems (R1CS) or multi scalar multiplications, compared to the Jubjub curve.

Category / Keywords: public-key cryptography / elliptic curve scalar multiplication GLV method benchmarks

Date: received 10 Sep 2021, last revised 22 Oct 2021

Contact author: simon at heliax dev

Available format(s): PDF | BibTeX Citation

Version: 20211022:212723 (All versions of this report)

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