题目:
我们看到给出了矩阵[3 4 19 11]
1:利用在线工具进行解码Practical Cryptography
2:解码完成后所得结果翻译之后是数字,提取后842084210884024084010124,看到只含有01248便猜测时云影密码,利用脚本进行解密。
a ="842084210884024084010124"
a = a.split("0")
flag = ''
for i in range(0, len(a)):
str = a[i]
sum = 0
for i in str:
sum += int(i)
flag += chr(sum + 64)
print(flag)