import { IosTouch } from "./devices/ios/ios.touch";
import { AndroidTouch } from "./devices/android/android.touch";
import { Platform } from "ionic-angular";
import { TouchSecureStorage } from "./storage/touch.storage";
import { TouchError } from "./models/touch.error";
export declare class TouchDriver {
    private iosTouch;
    private androidTouch;
    private storage;
    private isIOS;
    constructor(iosTouch: IosTouch, androidTouch: AndroidTouch, platform: Platform, storage: TouchSecureStorage);
    isAvailable(): Promise<string | TouchError>;
    save(username: string, password: string): Promise<any>;
    retrieve(): Promise<any>;
    private encryptCredentialsAndSave;
    private encryptTokenAndSave;
    private encryptString;
    private encryptObject;
    private decryptString;
    private decryptObject;
}