import { Request, Response } from 'express';
export declare function nonce(): string;
export declare function getNonceFromCookie(request: Request, response: Response, name: string, secret: string): string | undefined;
export declare function setNonceCookie(req: Request, res: Response, cookieName: string, secret: string, state: string): void;
export declare function deleteNonceCookie(req: Request, res: Response, cookieName: string, secret: string): void;