微信小程序 微信支付

微信小程序前端自处理：

//时间戳

timeStamp() {

　　return parseInt(new Date().getTime() / 1000) + ''

},

//随机数

randomString() {

　　var chars = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678'; /****默认去掉了容易混淆的字符oOLl,9gq,Vv,Uu,I1****/

　　var maxPos = chars.length;

　　var pwd = '';

　　for (var i = 0; i < 32; i++) {

　　　　pwd += chars.charAt(Math.floor(Math.random() * maxPos));

　　}

　　return pwd;

},

/***

1、appid:小程序APPID，key：微信商户平台（pay.winxin.qq.com）-->账号设置-->API安全-->密钥设置（商户密钥）

2、微信支付所需的另四个参数按照参数名ASCII码从小到大排序，形成stringA

3、在stringA前面添加APPID，最后面添加key得到stringSignTemp字符串，并对stringSignTemp进行MD5运算，再将的到的字符串所有字符转换为大写，得到sign值signValue。

 

***/

//调起支付签名

MixedencryMD5(prepay_id, randomString, timeStamp) {

　　return "appId=" + this.data.appid + "&nonceStr=" + randomString + "&package=prepay_id=" + prepay_id + "&signType=MD5" + "&timeStamp=" + timeStamp + "&key=" + this.data.key;

},

//调起微信支付按钮

_payBtn(){

　　let _this=this,

　　openid=wx.getStorageSync('openId');

　　wx.request({

　　　　url: '订单接口获取prepay_id支付订单号',

　　　　data: {

　　　　　　id: _this.properties.orderid,

　　　　　　openId: openid

　　　　},

　　　　method: 'POST',

　　　　header: {

　　　　　　"content-type": "application/x-www-form-urlencoded" //post请求设置

　　　　},

　　　　success: res => {

　　　　　　console.log(res)

　　　　　　let timeStamp = this.timeStamp(),

　　　　　　nonceStr = this.randomString(),

　　　　　　prepay_id = res.data.content.prepay_id,

　　　　　　MixedencryMD5 = this.MixedencryMD5(prepay_id, nonceStr, timeStamp),

　　　　　　paySign = md5.MD5(MixedencryMD5).toUpperCase(),/***签名MD5加密并转换成大写***/

　　　　　　orderid = _this.properties.orderid;

　　　　　　wx.requestPayment({/***微信支付***/

　　　　　　timeStamp: timeStamp,

　　　　　　nonceStr: nonceStr,

　　　　　　package: 'prepay_id=' + prepay_id,

　　　　　　signType: 'MD5',

　　　　　　paySign: paySign,

　　　　　　success:function(res){

　　　　　　　　//支付成功回调

　　　　　　}

　　　})

}

 

小程序微信支付MD5加密：

/*
 * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
 * Digest Algorithm, as defined in RFC 1321.
 * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 * Distributed under the BSD License
 */

/*
 * Configurable variables. You may need to tweak these to be compatible with
 * the server-side, but the defaults work in most cases.
 */
var hexcase = 0;  /* hex output format. 0 - lowercase; 1 - uppercase        */
var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance   */
var chrsz = 8;  /* bits per input character. 8 - ASCII; 16 - Unicode      */

/*
 * These are the functions you'll usually want to call
 * They take string arguments and return either hex or base-64 encoded strings
 */
function hex_md5(s) { return binl2hex(core_md5(str2binl(s), s.length * chrsz)); }
function b64_md5(s) { return binl2b64(core_md5(str2binl(s), s.length * chrsz)); }
function str_md5(s) { return binl2str(core_md5(str2binl(s), s.length * chrsz)); }
function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data)); }
function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data)); }
function str_hmac_md5(key, data) { return binl2str(core_hmac_md5(key, data)); }

/*
 * Perform a simple self-test to see if the VM is working
 */
function md5_vm_test() {
  return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72";
}

/*
 * Calculate the MD5 of an array of little-endian words, and a bit length
 */
function core_md5(x, len) {
  /* append padding */
  x[len >> 5] |= 0x80 << ((len) % 32);
  x[(((len + 64) >>> 9) << 4) + 14] = len;

  var a = 1732584193;
  var b = -271733879;
  var c = -1732584194;
  var d = 271733878;

  for (var i = 0; i < x.length; i += 16) {
    var olda = a;
    var oldb = b;
    var oldc = c;
    var oldd = d;

    a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936);
    d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586);
    c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819);
    b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330);
    a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897);
    d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426);
    c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341);
    b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983);
    a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416);
    d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417);
    c = md5_ff(c, d, a, b, x[i + 10], 17, -42063);
    b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162);
    a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682);
    d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101);
    c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290);
    b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329);

    a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510);
    d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632);
    c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713);
    b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302);
    a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691);
    d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083);
    c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335);
    b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848);
    a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438);
    d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690);
    c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961);
    b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501);
    a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467);
    d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784);
    c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473);
    b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734);

    a = md5_hh(a, b, c, d, x[i + 5], 4, -378558);
    d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463);
    c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562);
    b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556);
    a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060);
    d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353);
    c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632);
    b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640);
    a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174);
    d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222);
    c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979);
    b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189);
    a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487);
    d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835);
    c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520);
    b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651);

    a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844);
    d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415);
    c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905);
    b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055);
    a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571);
    d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606);
    c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523);
    b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799);
    a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359);
    d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744);
    c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380);
    b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649);
    a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070);
    d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379);
    c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259);
    b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551);

    a = safe_add(a, olda);
    b = safe_add(b, oldb);
    c = safe_add(c, oldc);
    d = safe_add(d, oldd);
  }
  return Array(a, b, c, d);

}

/*
 * These functions implement the four basic operations the algorithm uses.
 */
function md5_cmn(q, a, b, x, s, t) {
  return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b);
}
function md5_ff(a, b, c, d, x, s, t) {
  return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function md5_gg(a, b, c, d, x, s, t) {
  return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function md5_hh(a, b, c, d, x, s, t) {
  return md5_cmn(b ^ c ^ d, a, b, x, s, t);
}
function md5_ii(a, b, c, d, x, s, t) {
  return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}

/*
 * Calculate the HMAC-MD5, of a key and some data
 */
function core_hmac_md5(key, data) {
  var bkey = str2binl(key);
  if (bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz);

  var ipad = Array(16), opad = Array(16);
  for (var i = 0; i < 16; i++) {
    ipad[i] = bkey[i] ^ 0x36363636;
    opad[i] = bkey[i] ^ 0x5C5C5C5C;
  }

  var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz);
  return core_md5(opad.concat(hash), 512 + 128);
}

/*
 * Add integers, wrapping at 2^32. This uses 16-bit operations internally
 * to work around bugs in some JS interpreters.
 */
function safe_add(x, y) {
  var lsw = (x & 0xFFFF) + (y & 0xFFFF);
  var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
  return (msw << 16) | (lsw & 0xFFFF);
}

/*
 * Bitwise rotate a 32-bit number to the left.
 */
function bit_rol(num, cnt) {
  return (num << cnt) | (num >>> (32 - cnt));
}

/*
 * Convert a string to an array of little-endian words
 * If chrsz is ASCII, characters >255 have their hi-byte silently ignored.
 */
function str2binl(str) {
  var bin = Array();
  var mask = (1 << chrsz) - 1;
  for (var i = 0; i < str.length * chrsz; i += chrsz)
    bin[i >> 5] |= (str.charCodeAt(i / chrsz) & mask) << (i % 32);
  return bin;
}

/*
 * Convert an array of little-endian words to a string
 */
function binl2str(bin) {
  var str = "";
  var mask = (1 << chrsz) - 1;
  for (var i = 0; i < bin.length * 32; i += chrsz)
    str += String.fromCharCode((bin[i >> 5] >>> (i % 32)) & mask);
  return str;
}

/*
 * Convert an array of little-endian words to a hex string.
 */
function binl2hex(binarray) {
  var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
  var str = "";
  for (var i = 0; i < binarray.length * 4; i++) {
    str += hex_tab.charAt((binarray[i >> 2] >> ((i % 4) * 8 + 4)) & 0xF) +
      hex_tab.charAt((binarray[i >> 2] >> ((i % 4) * 8)) & 0xF);
  }
  return str;
}

/*
 * Convert an array of little-endian words to a base-64 string
 */
function binl2b64(binarray) {
  var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  var str = "";
  for (var i = 0; i < binarray.length * 4; i += 3) {
    var triplet = (((binarray[i >> 2] >> 8 * (i % 4)) & 0xFF) << 16)
      | (((binarray[i + 1 >> 2] >> 8 * ((i + 1) % 4)) & 0xFF) << 8)
      | ((binarray[i + 2 >> 2] >> 8 * ((i + 2) % 4)) & 0xFF);
    for (var j = 0; j < 4; j++) {
      if (i * 8 + j * 6 > binarray.length * 32) str += b64pad;
      else str += tab.charAt((triplet >> 6 * (3 - j)) & 0x3F);
    }
  }
  return str;
}
module.exports = {
  MD5: hex_md5
}

 

/*

* A JavaScript implementation of the RSA Data Security, Inc. MD5 Message

* Digest Algorithm, as defined in RFC 1321.

* Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.

* Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet

* Distributed under the BSD License

*/

/*

* Configurable variables. You may need to tweak these to be compatible with

* the server-side, but the defaults work in most cases.

*/

var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */

var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance */

var chrsz = 8; /* bits per input character. 8 - ASCII; 16 - Unicode */

/*

* These are the functions you'll usually want to call

* They take string arguments and return either hex or base-64 encoded strings

*/

function hex_md5(s) { return binl2hex(core_md5(str2binl(s), s.length * chrsz)); }

function b64_md5(s) { return binl2b64(core_md5(str2binl(s), s.length * chrsz)); }

function str_md5(s) { return binl2str(core_md5(str2binl(s), s.length * chrsz)); }

function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data)); }

function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data)); }

function str_hmac_md5(key, data) { return binl2str(core_hmac_md5(key, data)); }

/*

* Perform a simple self-test to see if the VM is working

*/

function md5_vm_test() {

return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72";

}

/*

* Calculate the MD5 of an array of little-endian words, and a bit length

*/

function core_md5(x, len) {

/* append padding */

x[len >> 5] |= 0x80 << ((len) % 32);

x[(((len + 64) >>> 9) << 4) + 14] = len;

var a = 1732584193;

var b = -271733879;

var c = -1732584194;

var d = 271733878;

for (var i = 0; i < x.length; i += 16) {

var olda = a;

var oldb = b;

var oldc = c;

var oldd = d;

a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936);

d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586);

c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819);

b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330);

a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897);

d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426);

c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341);

b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983);

a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416);

d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417);

c = md5_ff(c, d, a, b, x[i + 10], 17, -42063);

b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162);

a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682);

d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101);

c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290);

b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329);

a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510);

d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632);

c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713);

b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302);

a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691);

d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083);

c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335);

b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848);

a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438);

d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690);

c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961);

b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501);

a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467);

d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784);

c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473);

b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734);

a = md5_hh(a, b, c, d, x[i + 5], 4, -378558);

d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463);

c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562);

b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556);

a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060);

d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353);

c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632);

b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640);

a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174);

d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222);

c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979);

b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189);

a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487);

d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835);

c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520);

b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651);

a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844);

d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415);

c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905);

b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055);

a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571);

d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606);

c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523);

b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799);

a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359);

d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744);

c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380);

b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649);

a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070);

d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379);

c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259);

b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551);

a = safe_add(a, olda);

b = safe_add(b, oldb);

c = safe_add(c, oldc);

d = safe_add(d, oldd);

}

return Array(a, b, c, d);

}

/*

* These functions implement the four basic operations the algorithm uses.

*/

function md5_cmn(q, a, b, x, s, t) {

return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b);

}

function md5_ff(a, b, c, d, x, s, t) {

return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);

}

function md5_gg(a, b, c, d, x, s, t) {

return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);

}

function md5_hh(a, b, c, d, x, s, t) {

return md5_cmn(b ^ c ^ d, a, b, x, s, t);

}

function md5_ii(a, b, c, d, x, s, t) {

return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);

}

/*

* Calculate the HMAC-MD5, of a key and some data

*/

function core_hmac_md5(key, data) {

var bkey = str2binl(key);

if (bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz);

var ipad = Array(16), opad = Array(16);

for (var i = 0; i < 16; i++) {

ipad[i] = bkey[i] ^ 0x36363636;

opad[i] = bkey[i] ^ 0x5C5C5C5C;

}

var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz);

return core_md5(opad.concat(hash), 512 + 128);

}

/*

* Add integers, wrapping at 2^32. This uses 16-bit operations internally

* to work around bugs in some JS interpreters.

*/

function safe_add(x, y) {

var lsw = (x & 0xFFFF) + (y & 0xFFFF);

var msw = (x >> 16) + (y >> 16) + (lsw >> 16);

return (msw << 16) | (lsw & 0xFFFF);

}

/*

* Bitwise rotate a 32-bit number to the left.

*/

function bit_rol(num, cnt) {

return (num << cnt) | (num >>> (32 - cnt));

}

/*

* Convert a string to an array of little-endian words

* If chrsz is ASCII, characters >255 have their hi-byte silently ignored.

*/

function str2binl(str) {

var bin = Array();

var mask = (1 << chrsz) - 1;

for (var i = 0; i < str.length * chrsz; i += chrsz)

bin[i >> 5] |= (str.charCodeAt(i / chrsz) & mask) << (i % 32);

return bin;

}

/*

* Convert an array of little-endian words to a string

*/

function binl2str(bin) {

var str = "";

var mask = (1 << chrsz) - 1;

for (var i = 0; i < bin.length * 32; i += chrsz)

str += String.fromCharCode((bin[i >> 5] >>> (i % 32)) & mask);

return str;

}

/*

* Convert an array of little-endian words to a hex string.

*/

function binl2hex(binarray) {

var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";

var str = "";

for (var i = 0; i < binarray.length * 4; i++) {

str += hex_tab.charAt((binarray[i >> 2] >> ((i % 4) * 8 + 4)) & 0xF) +

hex_tab.charAt((binarray[i >> 2] >> ((i % 4) * 8)) & 0xF);

}

return str;

}

/*

* Convert an array of little-endian words to a base-64 string

*/

function binl2b64(binarray) {

var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

var str = "";

for (var i = 0; i < binarray.length * 4; i += 3) {

var triplet = (((binarray[i >> 2] >> 8 * (i % 4)) & 0xFF) << 16)

| (((binarray[i + 1 >> 2] >> 8 * ((i + 1) % 4)) & 0xFF) << 8)

| ((binarray[i + 2 >> 2] >> 8 * ((i + 2) % 4)) & 0xFF);

for (var j = 0; j < 4; j++) {

if (i * 8 + j * 6 > binarray.length * 32) str += b64pad;

else str += tab.charAt((triplet >> 6 * (3 - j)) & 0x3F);

}

}

return str;

}

module.exports = {

MD5: hex_md5

}