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zkCREAM is zk-SNARK based anonymized voting application using a token mixer

License: GNU General Public License v3.0

JavaScript 1.23% Shell 2.87% TypeScript 58.18% Solidity 37.66% Dockerfile 0.06%

cream's Introduction

zkC.R.E.A.M

Zero-Knowledge Confidential Reliable Ethereum Anonymous Mixer

Requirement

node >=v11.x

Setup

Config file

Check out packages/config/test.yml file how to configure settings:

cream:
  merkleTrees: 4
  zeroValue: "2558267815324835836571784235309882327407732303445109280607932348234378166811"

maci:
  initialVoiceCreditBalance: 100
  signUpDurationInSeconds: 180 # 3 min
  votingDurationInSeconds: 120 # 2 min
  coordinatorPrivKey: "2222222222263902553431241761119057960280734584214105336279476766401963593688"
  tallyBatchsize: 4
  messageBatchSize: 4
  quadVoteTallyBatchSize: 4
  voteOptionsMaxLeafIndex: 3

  merkleTrees:
    stateTreeDepth: 4
    messageTreeDepth: 4
    voteOptionTreeDepth: 2

chain:
  privateKeysPath: './'

snarkParamsPath: '../params'

Circuit

Make sure you set the same value of merkleTrees depth on both packages/config/test.yml and packages/circuits/circom.circom.

After finished setting, you can run:

$ yarn
$ yarn bulid
$ yarn ganache-cli // or cd packages/contracts && yarn ganache

# In up another terminal
$ cd packages/contracts && yarn migrate

Test

# after finished setting:
$ docker-compose -f docker/docker-compose.yml up -d # run ipfs container
$ yarn test

# after finished test:
$ docker-compose -f docker/docker-compose.yml down

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