@polkadot/util-crypto/sr25519/vrfSign.js

A collection of useful crypto utilities for @polkadot

import { randomBytes } from '@noble/hashes/utils';
import * as sr25519 from '@scure/sr25519';
import { u8aToU8a } from '@polkadot/util';
const EMPTY_U8A = new Uint8Array();
/**
 * @name sr25519VrfSign
 * @description Sign with sr25519 vrf signing (deterministic)
 */
export function sr25519VrfSign(message, { secretKey }, context = EMPTY_U8A, extra = EMPTY_U8A) {
    if (secretKey?.length !== 64) {
        throw new Error('Invalid secretKey, expected 64-bytes');
    }
    return sr25519.vrf.sign(u8aToU8a(message), secretKey, u8aToU8a(context), u8aToU8a(extra), randomBytes);
    // return vrfSign(secretKey, u8aToU8a(context), u8aToU8a(message), u8aToU8a(extra));
}