[Resource Topic] 2021/1152: Bandersnatch: a fast elliptic curve built over the BLS12-381 scalar field

Welcome to the resource topic for 2021/1152

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

Authors: Simon Masson, Antonio Sanso, 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.

ePrint: https://eprint.iacr.org/2021/1152

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