@waku/enr/dist/crypto.js

ENR (EIP-778) for Waku

import * as secp from "@noble/secp256k1";
import { concat } from "@waku/utils/bytes";
import sha3 from "js-sha3";
/**
 * ECDSA Sign a message with the given private key.
 *
 *  @param message The message to sign, usually a hash.
 *  @param privateKey The ECDSA private key to use to sign the message.
 *
 *  @returns The signature and the recovery id concatenated.
 */
export async function sign(message, privateKey) {
    const [signature, recoveryId] = await secp.sign(message, privateKey, {
        recovered: true,
        der: false
    });
    return concat([signature, new Uint8Array([recoveryId])], signature.length + 1);
}
export function keccak256(input) {
    return new Uint8Array(sha3.keccak256.arrayBuffer(input));
}
export function compressPublicKey(publicKey) {
    if (publicKey.length === 64) {
        publicKey = concat([new Uint8Array([4]), publicKey], 65);
    }
    const point = secp.Point.fromHex(publicKey);
    return point.toRawBytes(true);
}
/**
 * Verify an ECDSA signature.
 */
export function verifySignature(signature, message, publicKey) {
    try {
        const _signature = secp.Signature.fromCompact(signature.slice(0, 64));
        return secp.verify(_signature, message, publicKey);
    }
    catch {
        return false;
    }
}
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