/**
 * ACME directory URL constants for well-known CAs
 */
export declare const ACME_DIRECTORY_URLS: {
    readonly letsencrypt: {
        readonly production: "https://acme-v02.api.letsencrypt.org/directory";
        readonly staging: "https://acme-staging-v02.api.letsencrypt.org/directory";
    };
    readonly buypass: {
        readonly production: "https://api.buypass.com/acme/directory";
        readonly staging: "https://api.test4.buypass.no/acme/directory";
    };
};