信安作业0

代码如下

#include <stdio.h>
#include <string.h>
int main()
{
char pass[200]="766C7273626F76706A5E6F715F7271766C72706D626B71716C6C71666A62";
int a[61];
int ch1[40];
int n = strlen(pass);
for (int i = 0;i < n;i++) {
if (pass[i] >= '0' && pass[i] <= '9') {
a[i] = pass[i] - '0';
}
else {
a[i] = pass[i] - 'A' + 10;
}
}
for (int i = 0;i < n-1 ;i+=2) {
ch1[i/2] = a[i]*16 + a[i + 1];
}
for (int i = 0;i < 26;i++) {
for (int j = 0;j < n / 2;j++) {
printf("%c", (((ch1[j] - 'a') % 26 + i) % 26 + 'a'));
}
printf("\n");
}
}

结果如图：

 

选择youverysmartbutyouspenttootimes