Build your zkp app with typescript, hardhat, circom, and snarkjs!

Related tags

Learning resource react typescript ethereum hardhat zkp snarkjs circom
Overview

Zk app boilerplate

Pre requisites

Getting started

  1. Clone or fork this template repository. 
    git clone https://github.com/wanseob/zkp-app-boilerplate
  2. Install packages 
    yarn
  3. Build: this compiles the circuits and exports artifacts. Then compiles the contracts and generate typescript clients. 
    yarn build
  4. Run a demo app using a localhost private network. 
    yarn demo

Run tests

  1. Test contracts

    yarn workspace contracts test

  2. Test your circuits

    yarn workspace circuits test

  3. Test your app

    yarn workspace app test

Example: EdDSA signature rollup

Let's compress EdDSA signatures into one zk proof! Go to tutorial!

To check the complete codes, visit the tutorial branch.

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Comments
  • chore:fix: restrict node engine versions

    chore:fix: restrict node engine versions

    I ran into the following error when running yarn demo with node versions higher than 17.0.0:

    Error HH604: Error running JSON-RPC server: error:0308010C:digital envelope routines::unsupported

    It looks like it is due to Node 17.0.0 starting to use OpenSSL3 https://github.com/webpack/webpack/issues/14532#issuecomment-947807590

    It can be solved for instance by:

    • restricting the node engine versions in top level package.json
    • or using the --openssl-legacy-provider NODE_OPTIONS flag as suggested here

    I suggest the first solution because

    • I think unless one is familiar with the flag --openssl-legacy-provider, it will raise questions when one sees it used in a script
    • we would need to add this flag to all the scripts that need it
    • using engines in package.json is probably a more common way to avoid such compatibility issues.

    Test plan

    • on main branch:
      • yarn demo using NodeJS version >= 17.0.0: you'll see the error message mentioned above
      • yarn demo using NodeJS >= 16.0.0 < 17.0.0: script will execute without issues
    • on this branch: You'll be warned that you must use a node version between 16.0.0 and 17.0.0 to run the script 
      The engine "node" is incompatible with this module. Expected version ">=16 <17". Got "18.9.0"

    (I didn't test with versions lower than 16.0.0)

    opened by r1oga 0
Owner
Wanseob Lim
Wanseob Lim
GitHub
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