import { Salt } from "./types";
/**
 * @deprecated will be removed in the next major release in favour of OpenAttestation v4.0 (more info: https://github.com/Open-Attestation/open-attestation/tree/alpha)
 */
export declare const secureRandomString: () => string;
/**
 * @deprecated will be removed in the next major release in favour of OpenAttestation v4.0 (more info: https://github.com/Open-Attestation/open-attestation/tree/alpha)
 */
export declare const salt: (data: any) => Salt[];
/**
 * @deprecated will be removed in the next major release in favour of OpenAttestation v4.0 (more info: https://github.com/Open-Attestation/open-attestation/tree/alpha)
 */
export declare const encodeSalt: (salts: Salt[]) => string;
/**
 * @deprecated will be removed in the next major release in favour of OpenAttestation v4.0 (more info: https://github.com/Open-Attestation/open-attestation/tree/alpha)
 */
export declare const decodeSalt: (salts: string) => Salt[];