mimcjs

A toolbox to compute MiMC hash in Javascript, which allows to export a .zok file to perform the same computation in ZoKrates.

Table of contents

• mimcjs
  • Table of contents
  • Getting Started
  • Usage
    • Computing MiMC Hash
  • CLI
  • Contributing
  • Credits
  • Authors
  • License

Getting Started

To install the library, run:

$ npm install mimcjs

Usage

Computing MiMC Hash

const mimcjs = require('mimcjs')
const point1 = [1,2]
const point2 = [123,"0x55DC2CF4057e4D6D78eE7Ea5170B58c04D2c08a7"]
var hash1 = mimcjs.mimc(point1)
var hash2 = mimcjs.mimc(point2)

CLI

Some commands are available from CLI:

• mimc help show commands
• mimc hash <point> perform MiMC hash on a point
• mimc generate-constants <seed> generate round constants starting from a seed (number or string)
• mimc set-rounds <rounds> set DEFAULT_ROUNDS parameter
• mimc set-exponent <exponent> set DEFAULT_EXPONENT parameter
• mimc export-circuit export a .zok program to compute MiMC hash in ZoKrates using default parameters ROUND_CONSTANTS and DEFAULT_ROUNDS

Contributing

If you find a bug or you have ideas for new components, please feel free to submit a pull request 🚀

Credits

The library is based on https://github.com/HarryR/ethsnarks/blob/master/ethsnarks/mimc/permutation.py

Authors

• Guido Cazzaniga - Initial work - guidocazzaniga

License

ISC License