Introduction to the method of using sha1 to implement password encryption in WeChat mini programs

This article mainly introduces the relevant information on the detailed examples of password encryption implemented by WeChat applet sha1. Friends in need can refer to

Detailed explanation of password encryption examples implemented by WeChat applet sha1

Add a function in the util.js file in utils to convert the string into a hexadecimal encrypted string

function encodeUTF8(s) {
 var i, r = [], c, x;
 for (i = 0; i < s.length; i++)
  if ((c = s.charCodeAt(i)) < 0x80) r.push(c);
  else if (c < 0x800) r.push(0xC0 + (c >> 6 & 0x1F), 0x80 + (c & 0x3F));
  else {
   if ((x = c ^ 0xD800) >> 10 == 0) //对四字节UTF-16转换为Unicode
    c = (x << 10) + (s.charCodeAt(++i) ^ 0xDC00) + 0x10000,
     r.push(0xF0 + (c >> 18 & 0x7), 0x80 + (c >> 12 & 0x3F));
   else r.push(0xE0 + (c >> 12 & 0xF));
   r.push(0x80 + (c >> 6 & 0x3F), 0x80 + (c & 0x3F));
  };
 return r;
};

// 字符串加密成 hex 字符串
function sha1(s) {
 var data = new Uint8Array(encodeUTF8(s))
 var i, j, t;
 var l = ((data.length + 8) >>> 6 << 4) + 16, s = new Uint8Array(l << 2);
 s.set(new Uint8Array(data.buffer)), s = new Uint32Array(s.buffer);
 for (t = new DataView(s.buffer), i = 0; i < l; i++)s[i] = t.getUint32(i << 2);
 s[data.length >> 2] |= 0x80 << (24 - (data.length & 3) * 8);
 s[l - 1] = data.length << 3;
 var w = [], f = [
  function () { return m[1] & m[2] | ~m[1] & m[3]; },
  function () { return m[1] ^ m[2] ^ m[3]; },
  function () { return m[1] & m[2] | m[1] & m[3] | m[2] & m[3]; },
  function () { return m[1] ^ m[2] ^ m[3]; }
 ], rol = function (n, c) { return n << c | n >>> (32 - c); },
  k = [1518500249, 1859775393, -1894007588, -899497514],
  m = [1732584193, -271733879, null, null, -1009589776];
 m[2] = ~m[0], m[3] = ~m[1];
 for (i = 0; i < s.length; i += 16) {
  var o = m.slice(0);
  for (j = 0; j < 80; j++)
   w[j] = j < 16 ? s[i + j] : rol(w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16], 1),
    t = rol(m[0], 5) + f[j / 20 | 0]() + m[4] + w[j] + k[j / 20 | 0] | 0,
    m[1] = rol(m[1], 30), m.pop(), m.unshift(t);
  for (j = 0; j < 5; j++)m[j] = m[j] + o[j] | 0;
 };
 t = new DataView(new Uint32Array(m).buffer);
 for (var i = 0; i < 5; i++)m[i] = t.getUint32(i << 2);

 var hex = Array.prototype.map.call(new Uint8Array(new Uint32Array(m).buffer), function (e) {
  return (e < 16 ? "0" : "") + e.toString(16);
 }).join("");

 return hex;
};

Export function

module.exports = {
 formatTime: formatTime,
 sha1:sha1
}

This way you can call it in other pages

var util = require('../../utils/util.js')
util.sha1("123456")

Take the password 123456 as an example, online encryption result

The result of calling in the applet

The encryption result is the same

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