function XOR_hex(a, b) { var res = "", i = a.length, j = b.length; while (i-- > 0 && j-- > 0) res = (parseInt(a.charAt(i), 16) ^ parseInt(b.charAt(j), 16)).toString(16) + res; return res; } function hexEncode(a) { let hex; let result = ""; for (let i = 0; i < a.length; i++) { hex = a.charCodeAt(i).toString(16); result += ("000" + hex).slice(-4); } return result; } function xor(a, b) { return XOR_hex(hexEncode(a), hexEncode(b)).toString("hex"); } export default xor;