import { HttpMethod } from '@dripjs/types';
/**
 * Sign a message. hex( HMAC_SHA256(secret, verb + url + nonce + data) )
 *
 * @param  {String} secret API secret.
 * @param  {String} verb   Request verb (GET, POST, etc).
 * @param  {String} url    Request URL.
 * @param  {Number} nonce  Nonce for this request.
 * @param  {String|Object} [data] Request body, if it exists.
 * @return {String}        Signature.
 */
export declare function signMessage(secret: string, verb: string, url: string, nonce: number, data?: any): string;
export declare function getWSAuthQuery(apiKey: string, apiSecret: string): string;
export declare function getRestAuthHeaders(method: HttpMethod, baseUrl: string, endpoint: string, apiKey: string, apiSecret: string, data?: any): AuthHeaders;
export interface AuthHeaders {
    Origin: string;
    'Content-Type': string;
    accept: string;
    'api-expires': string;
    'api-key': string;
    'api-signature': string;
}