The @interep/identity package allows you to create Semaphore identities by deriving them from a message signed with an Ethereum account. The identity can be used to generate identity commitments and other parameters needed to create zero-knowledge proofs with Semaphore.

🛠 Install

npm or yarn

Install the @interep/semithid package with npm:

npm i @interep/identity --save

or yarn:

yarn add @interep/identity

📜 Usage

# createIdentity(sign: (message: string) => Promise<string>, provider: string, nonce?: number): ZKIdentity

import createIdentity from "@interep/identity"
import detectEthereumProvider from "@metamask/detect-provider"
import { ethers } from "ethers"

const ethereumProvider = (await detectEthereumProvider()) as any
const provider = new ethers.providers.Web3Provider(ethereumProvider)
const signer = provider.getSigner()

const identity = await createIdentity((message) => signer.signMessage(message), "Twitter")