Eddsa proof

A library to generate and verify EdDSA proofs.

The Snark artifacts (.wasm and .zkey files) can be specified or not in the generate function parameters and can possibly be downloaded using the following URLs:

• https://zkkit.cedoor.dev/eddsa-proof/eddsa-proof.wasm
• https://zkkit.cedoor.dev/eddsa-proof/eddsa-proof.zkey

[!WARNING]
The Snark artifacts currently used to generate zero-knowledge proofs are the result of an insecure trusted setup, and the library has not yet been audited. Therefore, it is advised not to use it in production.

🛠 Install

npm or yarn

Install the @zk-kit/eddsa-proof package:

npm i @zk-kit/eddsa-proof
Copy

or yarn:

yarn add @zk-kit/eddsa-proof
Copy

📜 Usage

import { generate, verify } from "@zk-kit/eddsa-proof"

// Your private key (secret) associated with your commitment.
const privateKey = "secret"
// A public value used to contextualize the cryptographic proof and calculate the nullifier.
const scope = "scope"

// Generate the proof.
const fullProof = await generate(privateKey, scope)

/*
    nb. commitment and scope are always the same - proof is variable.
{
    commitment: '21756852044673293804725356853298692762259855200429755225624171532449447776732',
    scope: '52191664570483756643537362991541193331102618014473399276861326740461293928448',
    proof: [
        '14987543977537638797613616391807211498102534775759297152458980015937921301475',
        '3399335485250714998192957632691923175498432819155620830553382340417897595836',
        '458847933923791518779258584891719351511628278818450523853640641455008133942',
        '9130558865745328382423837376229933835283742789420937388990076948167771186665',
        '2527867303822223913583586720705858457538165210401589969189198821632271648294',
        '870032122185130505849909299495220614500026484724112145131565329210361970548',
        '7499124546917660821334566902083675362480525785493429715971012094306224236446',
        '4681140599918274218600441523225984097742730174371377925026448119492671129895'
    ]
}

*/
console.log(fullProof)

// If not specified, the Snark artifacts are downloaded automatically.
// You can specify them as follows.

// const fullProof = await generate(privateKey, scope, {
//     wasm: "<your-path>/eddsa-proof.wasm",
//     zkey: "<your-path>/eddsa-proof.zkey"
// })

// Verify the proof.
const response = await verify(fullProof)

// true.
console.log(response)
Copy

📈 Benchmarks

Benchmarks were run on an Intel Core i7-1165G7, 16 GB RAM machine.

import { generate, verify } from "@zk-kit/eddsa-proof"

console.time("generate")

const proof = await generate("secret", "scope")

console.timeEnd("generate")

console.time("verify")

console.log(await verify(proof))

console.timeEnd("verify")
Copy