/**
 * Original work Copyright (c) 2018 PoC-Consortium
 * Modified work Copyright (c) 2019 Burst Apps Team
 */
/**
 * Converts/Encode a String into Hexadecimally encoded
 * Inverse function {@link convertHexStringToString}
 * @param str The Hex string to be converted
 * @return {string} The Hex String representing the input string
 *
 * @category conversion
 */
export declare const convertStringToHexString: (str: string) => string;