/**
 * DigestAuthProvider
 *
 * Handles HTTP Digest Authentication.
 * Note: Digest auth requires a challenge from the server first,
 * so this provider marks requests for digest auth handling.
 */
import { HttpRequest } from '../types';
import { IAuthProvider, AuthContext } from './IAuthProvider';
export declare class DigestAuthProvider implements IAuthProvider {
    readonly name = "digest";
    canHandle(request: HttpRequest): boolean;
    applyAuth(request: HttpRequest, context: AuthContext): Promise<HttpRequest>;
    private computeDigestHeader;
    private parseChallenge;
    private generateCnonce;
    private md5;
    private replaceVariables;
}