@switchboard-xyz/ecvrf-wasm

ecvrf-wasm

A JS compatibile compiled web assembly module (WASM) to prove and verify a verifiable random function for use on Solana.

Install

npm i --save @switchboard-xyz/ecvrf-wasm

Usage

To get a VRF proof

import ecvrf from "@switchboard-xyz/ecvrf-wasm";

let secretKey: Uint8Array;
let alphaHex: string;
const secretHex: string = Buffer.from(
  secretKey.slice(0, secretKey.length - 32)
).toString("hex");
const proofHexString: string = ecvrf.ecvrf_prove(secretHex, alphaHex);

To verify a VRF proof

import ecvrf from "@switchboard-xyz/ecvrf-wasm";
import { PublicKey } from "@solana/web3.js";

let producerPubkey: PublicKey;
let proofHex: string;
let alphaHex: string;
const verified: boolean = ecvrf.ecvrf_verify(
  producerPubkey.toBuffer().toString("hex"),
  proofHex,
  alphaHex
);
if (!verified) {
  throw new Error(`VRF proof was not verified`);
}