WinRAR 5.21 去弹窗 疑惑

WinRAR 突然就有弹窗广告了 ，找了个方法，重新写一下安装目录下的 rarreg.key，确实有效果但是重写的和之前的完全一样啊，至少在文本中完全一样，怎么回事。

下面附上两个文件，

1.key 是原始key，rarreg.key是达到去弹窗的key

写了个程序也发现是一样的 。

 #include <iostream>
 #include <cstdio>
 #include <fstream>
 #include <algorithm>
 #include <cmath>
 #include <deque>
 #include <vector>
 #include <queue>
 #include <string>
 #include <cstring>
 #include <map>
 #include <stack>
 #include <set>
 #define LL long long
 #define INF 0x3f3f3f3f
 #define OPEN_FILE
 using namespace std;

 char s1[][];
 char s2[][];
 int main()
 {
 #ifdef OPEN_FILE
     freopen("1.key", "r", stdin);
     //freopen("out.txt", "w", stdout);
 #endif // OPEN_FILE
     int i = ;
     while (~scanf("%s", s1[i])){
         i++;
     }
     freopen("rarreg.key", "r", stdin);
     int j = ;
     while (~scanf("%s", s2[j])){
         j++;
     }
     bool flag = false;
     for (int k = ; k < i; k++){
         int len = strlen(s1[k]);
         if (len != strlen(s2[k])){
             flag = true;
             break;
         }
         for (int p = ; p < len; p++){
             if (s1[k][p] != s2[k][p]){
                 flag = true;
                 break;
             }
         }
     }

     if (flag){
         printf("NO\n");
     }
     else{
         printf("YES\n");
     }

 }

1.key

 RAR registration data
 Federal Agency for Education
  PC usage license
 UID=b621cca9a84bc5deffbf
 6412612250ffbf533df6db2dfe8ccc3aae5362c06d54762105357d
 5e3b1489e751c76bf6e0640001014be50a52303fed29664b074145
 7e567d04159ad8defc3fb6edf32831fd1966f72c21c0c53c02fbbb
 2f91cfca671d9c482b11b8ac3281cb21378e85606494da349941fa
 e9ee328f12dc73e90b6356b921fbfb8522d6562a6a4b97e8ef6c9f
 fb866be1e3826b5aa126a4d2bfe9336ad63003fc0e71c307fc2c60
 64416495d4c55a0cc82d402110498da970812063934815d81470829275

rarreg.key

 RAR registration data
 Federal Agency for Education
  PC usage license
 UID=b621cca9a84bc5deffbf
 6412612250ffbf533df6db2dfe8ccc3aae5362c06d54762105357d
 5e3b1489e751c76bf6e0640001014be50a52303fed29664b074145
 7e567d04159ad8defc3fb6edf32831fd1966f72c21c0c53c02fbbb
 2f91cfca671d9c482b11b8ac3281cb21378e85606494da349941fa
 e9ee328f12dc73e90b6356b921fbfb8522d6562a6a4b97e8ef6c9f
 fb866be1e3826b5aa126a4d2bfe9336ad63003fc0e71c307fc2c60
 64416495d4c55a0cc82d402110498da970812063934815d81470829275