import type { Cookie } from "./cookie.js";
/**
 * A child cookie jar that authenticates its cookies.
 *
 * A _signed_ child jar signs all the cookies added to it and verifies cookies
 * retrieved from it. Any cookies stored in the `SignedJar` are provided
 * integrity and authenticity. In other words, clients cannot tamper with the
 * contents of a cookie, nor can they fabricate cookie values, but the data is
 * visible in plaintext.
 */
export declare class SignedJar {
    private readonly parent;
    private readonly key;
    /**
     * Returns a {@link Cookie} with the name `name` from the parent jar.
     *
     * It verifies the authenticity and integrity of the cookie's value,
     * returning a `Cookie` with the authenticated value. If the cookie cannot
     * be found, or the cookie fails to verify, `null` is returned.
     *
     * @see {@link CookieJar.get}
     */
    get(name: string): Cookie | null;
    /**
     * Adds a {@link Cookie} to the parent jar.
     *
     * The cookie's value is signed assuring integrity and authenticity.
     *
     * @see {@link CookieJar.add}
     */
    add(cookie: Cookie): void;
    /**
     * Removes a {@link Cookie} from the parent jar.
     *
     * For correct removal, the passed in `cookie` must contain the same `path`
     * and `domain` as the cookie that was initially set.
     *
     * @see {@link CookieJar.remove}
     */
    remove(cookie: Cookie): void;
    private sign;
    private verify;
    private verifyValue;
}