import type { NightfallKeys } from "../nightfall/types";
/**
 * Derive a set of zero-knowledge proof keys (zkpKeys) from given/new mnemonic
 *
 * @function createZkpKeys
 * @param {string} clientApiUrl URL of a running Nightfall Client
 * @param {string} [mnemonic] Optionally, a bip39 mnemonic
 * @throws {NightfallSdkError} Something went wrong
 * @returns {NightfallKeys} mnemonic + set of zkpKeys
 */
export declare function createZkpKeys(clientApiUrl: string, mnemonic?: undefined | string): Promise<NightfallKeys>;