import { Request } from './Request';
/**
 * A base authentication strategy that handles 90% of the authentication process.
 * This will verify that the token hasn't been manipulated or tainted.
 * The authenticate API must be implemented by subclasses to further validate the token data
 * for their specific use cases.
 */
export declare class BackendAuthenticationMiddleware {
    private $logger;
    constructor();
    /**
     *
     * @param request
     * @param response
     * @param options Arbituary object containing any relevant information used for authentication.
     */
    execute(request: Request, options?: any): Promise<any>;
}