脑洞大开 密文简单破译

“二八”分析得到十六进制，“爱死它”说明是ASCII码，再考虑移位。

代码如下

#include <stdio.h>
#include <stdlib.h>

void dec(char str[]);
void main()
{
    char code[61];
    gets(code);
    dec(code);
    return 0;
}
void dec(char str[])
{
    int i = 0, next = 0;
    int after[30];
    for (i = 0;i < 60;i+=2)
    {
        if (str[i] >= 48 && str[i] <= 57)
        {
            after[i / 2] = str[i] - 48;
        }
        if (str[i+1] >= 65 && str[i+1] <= 70)
        {
            next = str[i + 1] - 55;
        }
        if (str[i + 1] >= 48 && str[i + 1] <= 57)
        {
            next = str[i + 1] - 48;
        }
        after[i / 2] = after[i / 2] * 16 + next;
    }
    for (i = -74;i <= 74;i++)
    {
        for (next = 0;next < 30;next++)
        {
            printf("%c", after[next] + i);
        }
        printf("\n");
    }
}

最后选出最合适的

 即 you very smart but you spent too time

标签：code,&&,void,大开,脑洞,char,str,密文,dec
来源： https://www.cnblogs.com/zhs06/p/16199489.html