International Association for Cryptologic Research

International Association
for Cryptologic Research

IACR News item: 15 October 2022

Kaveh Aasaraai, Don Beaver, Emanuele Cesena, Rahul Maganti, Nicolas Stalder, Javier Varela
ePrint Report ePrint Report
Multi-Scalar Multiplication (MSM) on elliptic curves is one of the primitives and bottlenecks at the core of many zero-knowledge proof systems. Speeding up MSM typically results in faster proof generation, which in turn makes ZK-based applications practical.

We focus on accelerating large MSM on FPGA, and we present speed records for $\texttt{BLS12-377}$ on FPGA: 5.66s for $N=2^{26}$, sub-second for $N=2^{22}$.

We developed a fully-pipelined curve adder in extended Twisted Edwards coordinates that runs at 250MHz. Our architecture incorporates a scheduler to reorder curve operations, that's suitable not just for hardware acceleration, but also for software implementations using affine coordinates with batch inversion. The software implementation achieves +$10-20$\% performance improvement over the state-of-the-art $\texttt{gnark-crypto}$ library.
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