import { CalculateHmacSubjectOptions, CalculateRequestHeadersOptions, CalculateRequestHmacOptions, RequestHeaders, VerifyResponseInfo, VerifyResponseOptions } from './types';
/**
 * Calculate the HMAC for the given key and message
 * @param key {String} - the key to use for the HMAC
 * @param message {String} - the actual message to HMAC
 * @returns {*} - the result of the HMAC operation
 */
export declare function calculateHMAC(key: string, message: string): string;
/**
 * Calculate the subject string that is to be HMAC'ed for a HTTP request or response
 * @param urlPath request url, including query params
 * @param text request body text
 * @param timestamp request timestamp from `Date.now()`
 * @param statusCode Only set for HTTP responses, leave blank for requests
 * @param method request method
 * @returns {string}
 */
export declare function calculateHMACSubject({ urlPath, text, timestamp, statusCode, method, authVersion, }: CalculateHmacSubjectOptions): string;
/**
 * Calculate the HMAC for an HTTP request
 */
export declare function calculateRequestHMAC({ url: urlPath, text, timestamp, token, method, authVersion, }: CalculateRequestHmacOptions): string;
/**
 * Calculate request headers with HMAC
 */
export declare function calculateRequestHeaders({ url, text, token, method, authVersion, }: CalculateRequestHeadersOptions): RequestHeaders;
/**
 * Verify the HMAC for an HTTP response
 */
export declare function verifyResponse({ url: urlPath, statusCode, text, timestamp, token, hmac, method, authVersion, }: VerifyResponseOptions): VerifyResponseInfo;
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