import { User } from './api';
export declare function decodeBase64(data: string): string;
/**
 * Parse a pan-domain user cookie in to data and signature
 */
export declare function parseCookie(cookie: string): {
    data: string;
    signature: string;
};
/**
 * Verify signed data using nodeJs crypto library
 */
export declare function verifySignature(message: string, signature: string, pandaPublicKey: string): boolean;
export declare function sign(message: string, privateKey: string): string;
export declare function base64ToPEM(key: string, headerFooter: string): string;
export declare function httpGet(path: string): Promise<string>;
export declare function parseUser(data: string): User;