https://www.mgp.fr/modules/internet-templates/javascript/composants/obfuscator.js

1document.addEventListener('DOMContentLoaded', function ()
2{
3    // TODO: choose your own key (0 <= key <= 255):
4    const obfuscator = new Obfuscator(obfuscatorKey);
5    const textObfuscator = new TextCoder(obfuscator);
6    const linkObfuscator = new LinkCoder(obfuscator);
7
8    Nodes.decode('.obfuscatedl', linkObfuscator);
9    Nodes.decode('.obfuscated', textObfuscator);
10});
11
12
13// Xor
14
15function Obfuscator (key)
16{
17    this.key = key;
18}
19
20Obfuscator.prototype.encode = function (input)
21{
22    let output = '';
23
24    for (let i = 0; i < input.length; ++i) {
25        const hexInput = input.charCodeAt(i);
26        const hexOutput = hexInput ^ this.key;
27
28        output += this.fromHex(hexOutput);
29    }
30
31    return output;
32}
33
34Obfuscator.prototype.decode = function (input)
35{
36    let output = '';
37
38    for (let i = 0; i < input.length; i += 2) {
39        const hexInput = this.toHex(input, i);
40        const hexOutput = hexInput ^ this.key;
41
42        output += String.fromCharCode(hexOutput);
43    }
44
45    return output;
46}
47
48Obfuscator.prototype.fromHex = function (hex)
49{
50    let text = hex.toString(16);
51
52    if (hex < 16) {
53        text = '0' + text;
54    }
55
56    return text;
57}
58
59Obfuscator.prototype.toHex = function (text, i)
60{
61    const sequence = text.substr(i, 2);
62
63    return parseInt(sequence, 16);
64}
65
66
67// TextCoder
68
69function TextCoder (coder)
70{
71    this.coder = coder;
72}
73
74TextCoder.prototype.encode = function (span)
75{
76    this.apply('encode', span);
77}
78
79TextCoder.prototype.decode = function (span)
80{
81    this.apply('decode', span);
82}
83
84TextCoder.prototype.apply = function (action, span)
85{
86    const text = span.firstChild;
87
88    text.nodeValue = this.coder[action](text.nodeValue);
89}
90// LinkCoder
91
92function LinkCoder (coder)
93{
94    this.coder = coder;
95}
96
97LinkCoder.prototype.encode = function (a)
98{
99    this.apply('encode', a);
100}
101
102LinkCoder.prototype.decode = function (a)
103{
104    this.apply('decode', a);
105}
106
107LinkCoder.prototype.apply = function (action, a)
108{
109    const input = a.getAttribute('href');
110    const output = this.coder[action](input);
111
112    a.setAttribute('href', output);
113}
114
115
116// Nodes
117
118Nodes = {};
119
120Nodes.decode = function (selector, coder)
121{
122    const nodes = document.querySelectorAll(selector);
123    const method = coder.decode.bind(coder);
124
125    nodes.forEach(method);
126}