import { RequestObj, SignerOptions, Credentials } from "./types";
export declare const queryParamsToString: (params: any) => string;
/**
 * @api private
 */
export default class Signer {
    request: RequestObj;
    serviceName: string;
    signatureCache: boolean;
    bodySha256?: string;
    constructor(request: RequestObj, serviceName: string, options?: SignerOptions);
    sortParams(params: any): {};
    addAuthorization(credentials: Credentials, date?: Date): void;
    addHeaders(credentials: Credentials, datetime: string): void;
    authorization(credentials: Credentials, datetime: string): string;
    signature(credentials: Credentials, datetime: string): CryptoJS.lib.WordArray;
    stringToSign(datetime: string): string;
    canonicalString(): string;
    canonicalHeaders(): string;
    canonicalHeaderValues(values: string): string;
    signedHeaders(): string;
    signedQueries(): string;
    credentialString(datetime: string): string;
    hexEncodedHash(str: string): CryptoJS.lib.WordArray;
    hexEncodedBodyHash(): any;
    isSignableHeader(key: string): boolean;
    iso8601(date?: Date): string;
    getSigningKey(credentials: Credentials, date: string, region: string, service: string): CryptoJS.lib.WordArray;
    createScope(date: string, region: string, serviceName: string): string;
}