/**
 * Authentication filters
 * @packageDocumentation
 */
import { Filter } from "../filter";
/**
 * Basic authentication credentials
 */
export interface Credentials {
    /**
     * User
     */
    user: string;
    /**
     * Password
     */
    password: string;
}
/**
 * Extracts credentials following the "Basic" HTTP Authentication scheme
 * (see [RFC 7617](https://tools.ietf.org/html/rfc7617))
 *
 * @param realm - Authentication realm
 */
export declare function basic(realm: string): Filter<[Credentials]>;
/**
 * Extracts a OAuth 2.0 bearer token
 * (see [RFC 6750](https://tools.ietf.org/html/rfc6750))
 *
 * This filter doesn't support the use of a [form-encoded body parameter](https://tools.ietf.org/html/rfc6750#section-2.2).
 *
 * @param realm - Authentication realm
 * @param scopes - Authentication scopes
 */
export declare function bearer(realm: string, scopes?: string[]): Filter<[string]>;