snarkjs VS circomlib

git clone https://github.com/iden3/snarkjs cd snarkjs npm ci cd ../simple-zk

The generated wasm and r1cs files are available in the build folder. To generate the proof, we need a proving key file, and to generate this file, we need a ptau file. This ptau file can be generated by snarkjs, or you can download a pregenerated one (you can find the links in the snarkjs repo). For testing, the generated one is good for us, but in your production app, it’s recommended to do the ceremony and generate your own ptau file. (You can read about it in my previous article.)

Their goal was to teach how to use Circom to build zero-knowledge circuits and SnarkJS to compile them into solidity smart contracts.

Oh yeah, this is a known issue with windows; it's perfect on Mac. Do the steps here resolve it: https://github.com/iden3/snarkjs/issues/57 ?

The project mentions that it uses snarkjs and I thought I'd link it directy here. [1] What's interesting in the setup of systems like this one is the "Powers of Tau" ceremony which in decentralized manner (secure multi-party computation) avoid the "trusted setup" problem in non-interactive variants of zero knowledge proof systems like this one. [2]

[1] https://github.com/iden3/snarkjs

[2] https://github.com/ebfull/powersoftau

I found Circom to be the best language to start learning ZKPs, as suggested by CyberPorter. To me, Circom has the ideal level of abstraction for learning: not too high level that it abstracts away some of the quirks of ZKP, and not too low level that you get bogged down in annoying details. It also has been around for quite some time (modulo how new everything ZK is!), so you can find more documentation and samples, as well as the awesome Circom workshops from 0xparc. Last but not least, there is circomlib, a library of common building blocks for Circom.

The other thing we need is the circomlib. Circomlib is a programming library with many useful predefined circuits. So, create an empty project, and install circomlib using this code: