Js 之内容加密 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>js加密</title>
</head>
<body>

<script>
    var str = "alert('hello js')";
    eval(jsEncode(str));

    /**
     * 加密函数
     * @param text 加密的内容
     * @param gv 加密token
     * @returns {string|string} 加密后的内容
     */
    function jsEncode(text, gv = 'Yang') {
        var r = "";
        var n;
        var t;
        var b = ["___", "__$", "_$_", "_$$", "$__", "$_$", "$$_", "$$$", "$___", "$__$", "$_$_", "$_$$", "$$__", "$$_$", "$$$_", "$$$$",];
        var s = "";
        for (var i = 0; i < text.length; i++) {
            n = text.charCodeAt(i);
            if (n == 0x22 || n == 0x5c) {
                s += "\\\\\\" + text.charAt(i).toString(16);
            } else if ((0x21 <= n && n <= 0x2f) || (0x3A <= n && n <= 0x40) || (0x5b <= n && n <= 0x60) || (0x7b <= n && n <= 0x7f)) {
                //}else if( (0x20 <= n && n <= 0x2f) || (0x3A <= n == 0x40) || ( 0x5b <= n && n <= 0x60 ) || ( 0x7b <= n && n <= 0x7f ) ){
                s += text.charAt(i);
            } else if ((0x30 <= n && n <= 0x39) || (0x61 <= n && n <= 0x66)) {
                if (s) r += "\"" + s + "\"+";
                r += gv + "." + b[n < 0x40 ? n - 0x30 : n - 0x57] + "+";
                s = "";
            } else if (n == 0x6c) { // 'l'
                if (s) r += "\"" + s + "\"+";
                r += "(![]+\"\")[" + gv + "._$_]+";
                s = "";
            } else if (n == 0x6f) { // 'o'
                if (s) r += "\"" + s + "\"+";
                r += gv + "._$+";
                s = "";
            } else if (n == 0x74) { // 'u'
                if (s) r += "\"" + s + "\"+";
                r += gv + ".__+";
                s = "";
            } else if (n == 0x75) { // 'u'
                if (s) r += "\"" + s + "\"+";
                r += gv + "._+";
                s = "";
            } else if (n < 128) {
                if (s) r += "\"" + s;
                else r += "\"";
                r += "\\\\\"+" + n.toString(8).replace(/[0-7]/g, function (c) {
                    return gv + "." + b[c] + "+"
                });
                s = "";
            } else {
                if (s) r += "\"" + s;
                else r += "\"";
                r += "\\\\\"+" + gv + "._+" + n.toString(16).replace(/[0-9a-f]/gi, function (c) {
                    return gv + "." + b[parseInt(c, 16)] + "+"
                });
                s = "";
            }
        }
        if (s) r += "\"" + s + "\"+";

        r =
            gv + "=~[];" +
            gv + "={___:++" + gv + ",$$$$:(![]+\"\")[" + gv + "],__$:++" + gv + ",$_$_:(![]+\"\")[" + gv + "],_$_:++" +
            gv + ",$_$$:({}+\"\")[" + gv + "],$$_$:(" + gv + "[" + gv + "]+\"\")[" + gv + "],_$$:++" + gv + ",$$$_:(!\"\"+\"\")[" +
            gv + "],$__:++" + gv + ",$_$:++" + gv + ",$$__:({}+\"\")[" + gv + "],$$_:++" + gv + ",$$$:++" + gv + ",$___:++" + gv + ",$__$:++" + gv + "};" +
            gv + ".$_=" +
            "(" + gv + ".$_=" + gv + "+\"\")[" + gv + ".$_$]+" +
            "(" + gv + "._$=" + gv + ".$_[" + gv + ".__$])+" +
            "(" + gv + ".$$=(" + gv + ".$+\"\")[" + gv + ".__$])+" +
            "((!" + gv + ")+\"\")[" + gv + "._$$]+" +
            "(" + gv + ".__=" + gv + ".$_[" + gv + ".$$_])+" +
            "(" + gv + ".$=(!\"\"+\"\")[" + gv + ".__$])+" +
            "(" + gv + "._=(!\"\"+\"\")[" + gv + "._$_])+" +
            gv + ".$_[" + gv + ".$_$]+" +
            gv + ".__+" +
            gv + "._$+" +
            gv + ".$;" +
            gv + ".$$=" +
            gv + ".$+" +
            "(!\"\"+\"\")[" + gv + "._$$]+" +
            gv + ".__+" +
            gv + "._+" +
            gv + ".$+" +
            gv + ".$$;" +
            gv + ".$=(" + gv + ".___)[" + gv + ".$_][" + gv + ".$_];" +
            gv + ".$(" + gv + ".$(" + gv + ".$$+\"\\\"\"+" + r + "\"\\\"\")())();";

        return r;
    }


</script>
</body>
</html>

加密后的内容：

 

 

posted @ 2020-09-19 10:28  样子2018  阅读(390)  评论(0)  编辑  收藏  举报