Kimchi

This repository contains kimchi, a general-purpose zero-knowledge proof system for proving the correct execution of programs.

You can read more about this project on the Kimchi book, or for a lighter introduction in this blogpost.

See here for the rust documentation.

User Warning

This project comes as is. We provide no guarantee of stability or support, as the crates closely follow the needs of the Mina project.

If you use this project in a production environment, it is your responsibility to perform a security audit to ensure that the software meets your requirements.

Performance

At the time of this writing:

Proving time

Verification time

Proof size

Organization

The project is organized in the following way:

• book/. The mina book, RFCs, and specifications. Available here in HTML.
• curves/. The elliptic curves we use (for now just the pasta curves).
• groupmap/. Used to convert elliptic curve elements to field elements.
• hasher/. Interfaces for mina hashing.
• kimchi/. Our proof system based on PLONK.
• poly-commitment/. Polynomial commitment code.
• poseidon/. Implementation of the poseidon hash function.
• signer/. Interfaces for mina signature schemes.
• tools/. Various tooling to help us work on kimchi.
• turshi/. A Cairo runner written in rust.
• utils/. Collection of useful functions and traits.

Contributing

Check CONTRIBUTING.md if you are interested in contributing to this project.

Generate rustdoc locally

An effort is made to have the documentation being self-contained, referring to the mina book for more details when necessary. You can build the rust documentation with

rustup install nightly
RUSTDOCFLAGS="--enable-index-page -Zunstable-options" cargo +nightly doc --all --no-deps

You can visualize the documentation by opening the file target/doc/index.html.

CI

The CI will build different targets.

• Deploy Specifications & Docs to GitHub Pages. When CI passes on master, the documentation built from the rust code will be available here and the book will be available here.