EditPlus registration code generator (js code implementation)_javascript skills

Today, my colleague was surprised to tell me that he found an online EditPlus registration code generator. I quickly went to check it out, and it was indeed here.
There are too many viruses in the exe keygen, so you can rest assured with the pure js online keygen.

The author disassembled it from other people's registration machines and found out the algorithm. What surprised me even more is that the author Demon is actually a lawyer and has just obtained the legal professional qualification certificate. I admire him.


The main js function is like this:

Copy code The code is as follows:

function generate_editplus_regcode(username){
var list = [0,49345,49537,320,49921,960,640,49729,50689,1728,1920,51009,1280,50625,50305, 1088,52225,3264,3456,52545,3840,53185,52865,3648,2560,51905,52097,2880,51457,2496,2176,51265,55297,6336,6528,55617,6912,5 6257,55937,6720, 7680,57025,57217,8000,56577,7616,7296,56385,5120,54465,54657,5440,55041,6080,5760,54849,53761,4800,4992,54081,4352,53697, 53377,4160,61441, 12480,12672,61761,13056,62401,62081,12864,13824,63169,63361,14144,62721,13760,13440,62529,15360,64705,64897,15680,65281,1 6320,16000,65089,64001,15040, 15232,64321,14592,63937,63617,14400,10240,59585,59777,10560,60161,11200,10880,59969,60929,11968,12160,61249,11520,60865,6 0545,11328,58369,9408,9600, 58689,9984,59329,59009,9792,8704,58049,58241,9024,57601,8640,8320,57409,40961,24768,24960,41281,25344,41921,41601,25152,2 6112,42689,42881,26432, 3 0720,47297,47489,31040,47873, 31680,31360,47681,48641,32448,32640,48961,32000,48577,48257,31808,46081,29888,30080,46401,30464,47041,46721,30272,29184,4 5761,45953,29504,45313,29120, 28800,45121,20480,37057,37249,20800,37633,21440,21120,37441,38401,22208,22400,38721,21760,38337,38017,21568,39937,23744,2 3936,40257,24320,40897,40577, 24128,23040,39617,39809,23360,39169,22976,22656,38977,34817,18624,18816,35137,19200,35777,35457,19008,19968,36545,36737,2 0288,36097,19904,19584,35905, 17408,33985,34177,17728,34561,18368,18048,34369,33281,17088,17280,33601,16640,33217,32897,16448];
var hexchars = ['0','1','2 ','3','4','5','6','7','8','9','A','B','C','D','E', 'F'];
var regcode = new Array(29);
var i = 0, j = 0, k = 0;
var len, temp, sum, result;
username = usernamereplace(/^s |s $/g, "");
for(i = 0;i < 5;i ,k )
{
for(j = 0;j < 5 ;j ,k )
{
regcode[k] = hexchars[parseInt(Mathrandom() * 16)];
}
if(k == 29) break;
regcode[ k] = '-';
}
len = usernamelength;
sum = 1;
for(i = 0;i < len;i ){
sum = usernamecharCodeAt(i );
}
temp = (parseInt( (sum 23) / 6 ) 3) * 7 % 16;
regcode[6] = hexchars[temp & 0xF];
sum = 1;
for(i = 0;i < len;i ){
sum = usernamecharCodeAt(i);
}
temp = parseInt( (3 * sum 39) / 8 ) % 16;
regcode[9] = hexchars[temp & 0xF];
sum = 1;
for(i = 0;i < len;i ){
sum = usernamecharCodeAt(i);
}
temp = parseInt( (3 * sum 19) / 9 ) % 16;
regcode[7] = hexchars[temp & 0xF];
sum = 1;
for(i = 0;i < len;i ){
sum = usernamecharCodeAt(i);
}
temp = parseInt( (sum 10) / 3 ) * 8 % 16;
regcode[10 ] = hexchars[temp & 0xF];
sum = 1;
for(i = 0;i < len;i ){
sum = usernamecharCodeAt(i);
}
temp = (parseInt( (9 * sum 10) / 3 ) 36) % 16;
regcode[4] = hexchars[temp & 0xF];
sum = 1;
for(i = 0; i < len;i ){
sum = usernamecharCodeAt(i);
}
temp = parseInt( (5 * sum 11) / 5 ) % 16;
regcode[8] = hexchars [temp & 0xF];
result = 0;
for(i = 0;i < len;i ){
result = ((result >> 8) & 0xFF) ^ list[ usernamecharCodeAt(i) ^ (result & 0xFF)];
}
result = resulttoString(16)toUpperCase();
regcode[2] = resultcharAt(0);
regcode[3] = resultcharAt(1);
len = regcodelength;
result = 0;
for(i = 2;i < len;i ){
result = ((result >> 8) & 0xFF) ^ list[regcode[i]toString()charCodeAt(0) ^ (result & 0xFF)];
}
result = resulttoString(16)toUpperCase();
regcode[0] = resultcharAt(0);
regcode[1] = resultcharAt(1);
return regcodejoin("");
}