/**
 * Calculates MD5 value for a given string.
 * If a key is provided, calculates the HMAC-MD5 value.
 * Returns a Hex encoded string unless the raw argument is given.
 *
 * @since 5.15.0
 * @category String
 * @param {string} input Input string
 * @param {string} [key] HMAC key
 * @param {boolean} [raw] Raw output switch
 * @returns {string} MD5 output
 */
export declare function md5(input: string): string;
/**
 * Calculates MD5 value for a given string.
 * If a key is provided, calculates the HMAC-MD5 value.
 * Returns a Hex encoded string unless the raw argument is given.
 *
 * @since 5.15.0
 * @category String
 * @param input Input string
 * @param key HMAC key
 * @param raw Raw output switch
 * @returns MD5 output (in upper case)
 */
export declare function MD5(input: string): string;
export default md5;