@polkadot/util-crypto/cjs/sr25519/vrfVerify.js

A collection of useful crypto utilities for @polkadot

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.sr25519VrfVerify = sr25519VrfVerify;
const tslib_1 = require("tslib");
const sr25519 = tslib_1.__importStar(require("@scure/sr25519"));
const util_1 = require("@polkadot/util");
const EMPTY_U8A = new Uint8Array();
/**
 * @name sr25519VrfVerify
 * @description Verify with sr25519 vrf verification
 */
function sr25519VrfVerify(message, signOutput, publicKey, context = EMPTY_U8A, extra = EMPTY_U8A) {
    const publicKeyU8a = (0, util_1.u8aToU8a)(publicKey);
    const proofU8a = (0, util_1.u8aToU8a)(signOutput);
    if (publicKeyU8a.length !== 32) {
        throw new Error('Invalid publicKey, expected 32-bytes');
    }
    else if (proofU8a.length !== 96) {
        throw new Error('Invalid vrfSign output, expected 96 bytes');
    }
    return sr25519.vrf.verify((0, util_1.u8aToU8a)(message), proofU8a, publicKeyU8a, (0, util_1.u8aToU8a)(context), (0, util_1.u8aToU8a)(extra));
}