ecsol

Elliptic Curve Implementation in Solidity (fork of https://github.com/jbaylina/ecsol) with implemented ecrecover trick by Vitalik Buterin (https://ethresear.ch/t/you-can-kinda-abuse-ecrecover-to-do-ecmul-in-secp256k1-today/2384).

Features

1. Methods ecadd and ecmul without z argument
2. Methods ecmulVerify and publicKeyVerify for super-fast (25x) verifications (31-33k gas instead of 700k-1000k gas)

Installation

1. Install truffle globally with npm install -g truffle
2. Install ganache-cli globally with npm install -g ganache-cli
3. Install local packages with npm install
4. Run ganache in separate terminal scripts/rpc.sh
5. Run tests with npm test

On macOS you also need to install watchman: brew install watchman