use more Buffer

src/libs/secret.js

@@ -1,5 +1,6 @@
 import CryptoJS from "crypto-js";
 import pako from "pako";
+import {Buffer} from "buffer";
 //import {gzip_encode_raw,gzip_decode_raw} from 'wasm-flate';
 
 const wasmFlate = window.wasm_bindgen;
@@ -137,16 +138,10 @@ export function convertHexStringToBase64(hexString) {
 }
 
 export function convertHexStringToUint8Array(hexString) {
-  var result = [];
-  for (var i = 0; i < hexString.length; i += 2) {
-    result.push(parseInt(hexString.substr(i, 2), 16));
-  }
-  return Uint8Array.from(result);
+  return Uint8Array.from(Buffer.from(hexString, 'hex'));
 }
 export function convertUint8ArrayToHexString(byteArray) {
-  return Array.prototype.map.call(byteArray, function(byte) {
-    return ('0' + (byte & 0xFF).toString(16)).slice(-2);
-  }).join('');
+  return Buffer.from(byteArray).toString('hex');
 }
 
 function convertWordArrayToUint8Array(wordArray) {