import { ApiSignature, ApiAuthKey } from '../types/api.type';
/**
 * Build ApiSignature for Naver Cloud Platform.
 *  - NCP API Signature Builder
 *  - external API Doc : https://api.ncloud-docs.com/docs/en/common-ncpapi
 *
 * @param {string} method - NCP API service method
 * @param {string} url - NCP API service url ( include query string )
 * @param {ApiAuthKey} authKey - NCP Account access key & secret key ( from portal or Sub Account )
 *
 * @returns {ApiSignature}
 * Caculated api signature for NCP services. format: `ApiSignature`
 */
export declare function buildApiSignature(method: string, url: string, authKey: ApiAuthKey): ApiSignature;