import { GenerateResult } from 'selfsigned';
/**
 * Utils class which provides some helpful methods when using BSHB.
 */
export declare class BshbUtils {
    /**
     * Generate a client certificate for communication with BSHC.
     * The certificate validity is 365 days. As far as I know this does not really matter,
     * because the controller does not read the validity value of the client certificate.
     */
    /**
     * Generate a client certificate for communication with BSHC.
     * The certificate validity is 365 days by default. You can specify validity in days.
     * @param days Number of days the certificate should be valid for (optional)
     */
    static generateClientCertificate(days?: number): Promise<GenerateResult>;
    /**
     * Generate a random identifier which is needed during pairing process.
     */
    static generateIdentifier(): string;
    /**
     * Get root ca certificate of Bosch Smart Home Controller.
     */
    static getBoschSmartHomeControllerRootCa(): string;
}