zk-kit/packages/protocols

ZK protocols

Client library for generating and verifying Semaphore & RLN ZK proofs.

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🛠 Install

npm or yarn

Install the @zk-kit/protocols package with npm:

npm i @zk-kit/protocols

or yarn:

yarn add @zk-kit/protocols

📜 Usage

Generating Merkle proofs

import { ZkIdentity } from "@zk-kit/identity"
import { generateMerkleProof } from "@zk-kit/protocols"

const depth = 20
const zeroValue = BigInt(0)
const arity = 5
const identity = new ZkIdentity()
const identityCommitment = identity.genIdentityCommitment()
const identityCommitments = [BigInt(1), identityCommitment, BigInt(2)]

const merkleProof = generateMerkleProof(depth, zeroValue, arity, identityCommitments, 1)

Creating Semaphore proofs

import { Semaphore } from "@zk-kit/protocols"

const signal = "Hello world"
const externalNullifier = BigInt(1)
const witness = Semaphore.genWitness(identity, merkleProof, externalNullifier, signal)

const fullProof = await Semaphore.genProof(witness, "./semaphore.wasm", "./semaphore.zkey")
const solidityProof = Semaphore.packToSolidityProof(fullProof)