Nodejs develops WeChat applet to implement password encryption

What this article shares with you is the sample code to implement password encryption in the process of using nodejs to develop WeChat applet. It is very simple. Friends in need can refer to it

WeChat applet development-- Specific steps to implement password encryption:

Add a function to 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, the online encryption result

Calling the result in the applet

The encryption results are the same

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