kzg-rs

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Rust implementation of KZG point evaluation

// repository documentation

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# kzg-rs [![Rust](https://github.com/0xWOLAND/kzg-rs/actions/workflows/rust.yml/badge.svg?branch=master)](https://github.com/0xWOLAND/kzg-rs/actions/workflows/rust.yml)

An endpoint for `verify_kzg_proof` in [c-kzg-4844](https://github.com/ethereum/c-kzg-4844) using [bls12_381](https://github.com/zkcrypto/bls12_381/). Passes all of the `verify_kzg_proof` tests in [c-kzg-4844/verify_kzg_proof](https://github.com/ethereum/c-kzg-4844/tree/main/tests/verify_kzg_proof/kzg-mainnet).

## Cycle Counts in SP1
| Test                                   | Cycle Count |
| -------------------------------------- | ----------- |
| Verify blob KZG proof                  | 27,166,173  |
| Verify blob KZG proof batch (10 blobs) | 196,571,578 |
| Evaluate polynomial in evaluation form | 59,370,556  |
| Compute challenge                      | 57,341,532  |
| Verify KZG proof                       | 9,390,640   |

This crate has been used in a [fork of SP1's patch of `revm`](https://github.com/0xWOLAND/revm/tree/patch-v5.0.0), which passes all tests.  `kzg-rs` is based on [this](https://github.com/sp1-patches/bls12_381/tree/patch-v0.8.0) slightly modified fork of `bls12_381`. This crate works in `[no_std]` mode.

## Usage
```sh
cargo add kzg-rs
```
Or add
```toml
kzg-rs = "0.2.3" 
```

You can rebuild `roots_of_unity.bin`, `g1.bin`, and `g2.bin` by running

```sh 
cargo build
```

kzg-rs

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