diff --git a/auth/index.js b/auth/index.js
index 2a95d28..5bf2e7b 100644
--- a/auth/index.js
+++ b/auth/index.js
@@ -10,7 +10,7 @@ function AuthToken(redisdb) {
 AuthToken.prototype.genToken = async function(userData, expiresSeconds) {
   // 生成系统内部的user token
   let hash = crypto.createHash('md5');
-  hash.update(JSON.stringify(userData) + Date());
+  hash.update(JSON.stringify(userData) + Date() + Math.random());
   let userToken = hash.digest('hex');
 
   // 缓存到redis
@@ -99,9 +99,9 @@ AuthToken.prototype.getTokenData = async function (userToken) {
 };
 
 let tokenInstance = null;
-module.exports = function getTokenInstance(redisPort, redisHost, db) {
+module.exports = function getTokenInstance(redisdb) {
   if (!tokenInstance) {
-    tokenInstance = new AuthToken(redisPort, redisHost, db);
+    tokenInstance = new AuthToken(redisdb);
   }
   return tokenInstance;
 };
diff --git a/auth/package.json b/auth/package.json
index 9485b1f..cf5b6dc 100644
--- a/auth/package.json
+++ b/auth/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@ehason/auth",
-  "version": "1.2.2",
+  "version": "1.2.4",
   "description": "User auth lib",
   "main": "index.js",
   "scripts": {
diff --git a/utils/impl/crc.js b/utils/impl/crc.js
new file mode 100644
index 0000000..372d366
--- /dev/null
+++ b/utils/impl/crc.js
@@ -0,0 +1,149 @@
+const CRC = {};
+
+CRC._auchCRCHi = [
+    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
+    0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
+    0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
+    0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
+    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,
+    0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
+    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,
+    0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
+    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
+    0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40,
+    0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,
+    0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
+    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
+    0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40,
+    0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
+    0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
+    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
+    0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
+    0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
+    0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
+    0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
+    0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40,
+    0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,
+    0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
+    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
+    0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
+];
+CRC._auchCRCLo = [
+    0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06,
+    0x07, 0xC7, 0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD,
+    0x0F, 0xCF, 0xCE, 0x0E, 0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09,
+    0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9, 0x1B, 0xDB, 0xDA, 0x1A,
+    0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC, 0x14, 0xD4,
+    0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3,
+    0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3,
+    0xF2, 0x32, 0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4,
+    0x3C, 0xFC, 0xFD, 0x3D, 0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A,
+    0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38, 0x28, 0xE8, 0xE9, 0x29,
+    0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF, 0x2D, 0xED,
+    0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26,
+    0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60,
+    0x61, 0xA1, 0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67,
+    0xA5, 0x65, 0x64, 0xA4, 0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F,
+    0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68,
+    0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA, 0xBE, 0x7E,
+    0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5,
+    0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71,
+    0x70, 0xB0, 0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92,
+    0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C,
+    0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A, 0x9A, 0x9B, 0x5B,
+    0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89, 0x4B, 0x8B,
+    0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,
+    0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42,
+    0x43, 0x83, 0x41, 0x81, 0x80, 0x40
+];
+
+CRC.CRC16 = function (buffer) {
+    let hi = 0xff;
+    let lo = 0xff;
+    for (let i = 0; i < buffer.length; i++) {
+        let idx = hi ^ buffer[i];
+        hi = (lo ^ CRC._auchCRCHi[idx]);
+        lo = CRC._auchCRCLo[idx];
+    }
+    return CRC.padLeft((hi << 8 | lo).toString(16).toUpperCase(), 4, '0');
+};
+
+CRC.isArray = function (arr) {
+    return Object.prototype.toString.call(arr) === '[object Array]';
+};
+
+CRC.ToCRC16 = function (str) {
+    return CRC.CRC16(CRC.isArray(str) ? str : CRC.strToByte(str));
+};
+
+CRC.ToModbusCRC16 = function (str) {
+    return CRC.CRC16(CRC.isArray(str) ? str : CRC.strToHex(str));
+};
+
+CRC.strToByte = function (str) {
+    let tmp = str.split(''), arr = [];
+    for (let i = 0, c = tmp.length; i < c; i++) {
+        let j = encodeURI(tmp[i]);
+        if (j.length === 1) {
+            arr.push(j.charCodeAt());
+        } else {
+            let b = j.split('%');
+            for (let m = 1; m < b.length; m++) {
+                arr.push(parseInt('0x' + b[m]));
+            }
+        }
+    }
+    return arr;
+};
+
+CRC.convertChinese = function (str) {
+    let tmp = str.split(''), arr = [];
+    for (let i = 0, c = tmp.length; i < c; i++) {
+        let s = tmp[i].charCodeAt();
+        if (s <= 0 || s >= 127) {
+            arr.push(s.toString(16));
+        }
+        else {
+            arr.push(tmp[i]);
+        }
+    }
+    return arr;
+};
+
+CRC.filterChinese = function (str) {
+    let tmp = str.split(''), arr = [];
+    for (let i = 0, c = tmp.length; i < c; i++) {
+        let s = tmp[i].charCodeAt();
+        if (s > 0 && s < 127) {
+            arr.push(tmp[i]);
+        }
+    }
+    return arr;
+};
+
+CRC.strToHex = function (hex, isFilterChinese) {
+    hex = isFilterChinese ? CRC.filterChinese(hex).join('') : CRC.convertChinese(hex).join('');
+
+    //清除所有空格
+    hex = hex.replace(/\s/g, "");
+    //若字符个数为奇数，补一个空格
+    hex += hex.length % 2 !== 0 ? " " : "";
+
+    let c = hex.length / 2, arr = [];
+    for (let i = 0; i < c; i++) {
+        arr.push(parseInt(hex.substr(i * 2, 2), 16));
+    }
+    return arr;
+};
+
+CRC.padLeft = function (s, w, pc) {
+    if (pc === undefined) {
+        pc = '0';
+    }
+    for (let i = 0, c = w - s.length; i < c; i++) {
+        s = pc + s;
+    }
+    return s;
+};
+
+module.exports = CRC;
diff --git a/utils/index.js b/utils/index.js
index 47d7597..13bafca 100644
--- a/utils/index.js
+++ b/utils/index.js
@@ -1,5 +1,6 @@
 
 module.exports = {
   prxrmq: require('./impl/prxrmq'),
-  ctxresp: require('./impl/koaresp')
+  ctxresp: require('./impl/koaresp'),
+  crc: require('./impl/crc')
 };
diff --git a/utils/package.json b/utils/package.json
index 4c0f354..bab5997 100644
--- a/utils/package.json
+++ b/utils/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@ehason/utils",
-  "version": "1.0.2",
+  "version": "1.1.0",
   "description": "Utils for ehason develope",
   "main": "index.js",
   "scripts": {