效果展示

function get_copyright(){

var domain = "jshaman.com";

var from_year = 2017;

var copyright = "(c)" + from_year + "-" + (new Date).getFullYear() + "," + domain;

return copyright;

}

console.log(get_copyright());

var b=['function','get_copyright(){','var','domain','\x22jshaman.com\x22;','from_year','2017;','copyright','\x22(c)\x22','\x22-\x22','(new','Date).getFullYear()','\x22,\x22','domain;','return','copyright;','console.log(get_copyright());'];

var i=[0x866cb^0x866cb,0x32d88^0x32d89,0x4e909^0x4e90b,0x89f22^0x89f21,0x4a5c5^0x4a5c0,0xd9943^0xd9944,0xe9b87^0xe9b8e,0x27fa7^0x27fac,0x8f43c^0x8f431,0x280a0^0x280b1,0x78277^0x78264,0x14,0x16,0x18,0x83ff5^0x83fd2,0x28,0x3eaff^0x3ead5];

var c='\x0a_[0]\x20_[1]\x0a_[2]\x20_[3]\x20=\x20_[5]\x0a_[2]\x20_[7]\x20=\x20_[9]\x0a_[2]\x20_[11]\x20=\x20_[13]\x20+\x20_[7]\x20+\x20_[17]\x20+\x20_[19]\x20_[20]\x20+\x20_[22]\x20+\x20_[24]\x0a_[11]\x20=\x20_[13]\x20+\x20_[7]\x20+\x20_[17]\x20+\x20_[19]\x20_[20]\x20+\x20_[22]\x20+\x20_[24]\x0a_[39]\x20_[40]\x0a}\x0a_[42]\x0a';for(j=0x0;j<b['length'];j++){c=c['replace'](new RegExp('_\x5c['+i[j]+'\x5c]','g'),b[j]['replace']('`','')['replace']('`',''));}

[]['constructor']['constructor'](c)();

_[0] _[1]

_[2] _[3] = _[5]

_[2] _[7] = _[9]

_[2] _[11] = _[13] + _[7] + _[17] + _[19] _[20] + _[22] + _[24]

_[11] = _[13] + _[7] + _[17] + _[19] _[20] + _[22] + _[24]

_[39] _[40]

//要加密的JS代码

var js_code =`

function get_copyright(){

var domain = "jshaman.com";

var from_year = 2017;

var copyright = "(c)" + from_year + "-" + (new Date).getFullYear() + "," + domain;

copyright = "(c)" + from_year + "-" + (new Date).getFullYear() + "," + domain;

return copyright;

}

console.log(get_copyright());

`;

//把代码以空格分割，放入数组

var str_arr = js_code.trim().split(/\s+/);

var str_obj = {};

var min_str_arr = [];

var min_str_arr_index = [];

var index = 0;

//遍历代码数组

for(i=0; i<str_arr.length; i++){

    //长度大于3的数组内容

    if(str_arr[i].length >= 3){

像中是否存在，用对像不用数组是因为效率更高

        if(str_obj[str_arr[i]] == null){

            index = i;

            str_obj[str_arr[i]] = i;

            //缩小的数组

            min_str_arr.push("`" + str_arr[i] + "`");

            //缩小的数组索引，解密用

            min_str_arr_index.push(index);

        }else{

            //索引，解密用

            index = str_obj[str_arr[i]];

        }

        //将代码进行替换加密

        js_code = js_code.replace(str_arr[i],"_["+ index +"]");

    }

}

/*

//还原

for(i=0; i<min_str_arr.length; i++){

    js_code = js_code.replace(new RegExp("b\\["+min_str_arr_index[i]+"\\]","g"), min_str_arr[i].replace("`","").replace("`",""));

}

*/

//代码数组

var b = "var b= [" + min_str_arr + "];";

//代码数组索引

var i = "var i= [" + min_str_arr_index + "];";

//加密的代码

var c = "var c= `" + js_code + "`";

//解密并执行代码

var d = `

for(j=0; j<b.length; j++){

c = c.replace(new RegExp("_\\\\["+i[j]+"\\\\]","g"), b[j].replace("\`","").replace("\`",""));

}

[].constructor.constructor(c)();

`;

//组合，使可以自动执行加密代码

e = b+"\n"+i+"\n"+c+d;

console.log(e);

var b= [`function`,`get_copyright(){`,`var`,`domain`,`"jshaman.com";`,`from_year`,`2017;`,`copyright`,`"(c)"`,`"-"`,`(new`,`Date).getFullYear()`,`","`,`domain;`,`return`,`copyright;`,`console.log(get_copyright());`];

var i= [0,1,2,3,5,7,9,11,13,17,19,20,22,24,39,40,42];

var c= `

_[0] _[1]

_[2] _[3] = _[5]

_[2] _[7] = _[9]

_[2] _[11] = _[13] + _[7] + _[17] + _[19] _[20] + _[22] + _[24]

_[11] = _[13] + _[7] + _[17] + _[19] _[20] + _[22] + _[24]

_[39] _[40]

}

_[42]

`

for(j=0; j<b.length; j++){

c = c.replace(new RegExp("_\\["+i[j]+"\\]","g"), b[j].replace("`","").replace("`",""));

}

[].constructor.constructor(c)();

JS代码加密应用场景