import { Jwk } from './jwk';
/**
 * Singleton service class to register and retrieve JSON Web Keys.
 */
export declare class JwkStore {
    private static instance;
    protected localCryptoKeys: [RegExp, Jwk[]][];
    protected remoteCryptoOrigins: string[];
    protected remoteCryptoCache: Map<string, CryptoKey>;
    protected constructor();
    /**
     * Retrieves the singleton instance of this service class.
     *
     * @returns the singleton instance
     */
    static getInstance(): JwkStore;
    /**
     * Register a new trustworthy URL to retrieve JSON Web Keys from.
     *
     * @param url the URL to register
     */
    addHost(url: string): void;
    /**
     * Registers a new set of JSON Web Keys in the store. It is possible to
     * register multiple keys for a single environment in order to account for
     * key renewals with a transition period.
     *
     * @param test a regular expression to check if this key is applicable
     * @param jwk the JSON Web Key(s) to register
     */
    addJwk(test: RegExp, ...jwk: Jwk[]): void;
    /**
     * Retrieves a set of JSON Web Keys for the given environment URL.
     *
     * @param iss the environment URL provided in the `iss` claim of the token
     * @returns a promise holding the corresponding Crypto keys
     */
    getJwk(iss: string, jku?: string): Promise<CryptoKey[]>;
    /**
     * Retrieves a JSON Web Key from the given URL.
     *
     * @param url the remote URL that hosts the JWK data
     * @param timeout the request timeout in milliseconds
     * @returns a promise holding the corresponding Crypto key
     */
    loadJwk(url: string, timeout?: number): Promise<CryptoKey>;
    /**
     * Resets the store.
     */
    reset(): void;
}