【BugkuCTF】Crypto--简单加密

Description:

e6Z9i~]8R~U~QHE{RnY{QXg~QnQ{^XVlRXlp^XI5Q6Q6SKY8jUAA

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Solution:

因为有个AA，所以感觉是Base64(毕竟==)
但是这就要自己写Python脚本先ASCII凯撒移位去了

代码

# coding=utf-8
str1 = input("Input:")
arr = list(str1)
for j in range(0, 49):
    for i in arr:
        print(chr(ord(i)-j), end="")
    print()
for j in range(0, 128):
    for i in arr:
        print(chr(ord(i)+j), end="")
    print()

得到Base64
a2V5ezY4NzQzMDAwNjUwMTczMjMwZTRhNThlZTE1M2M2OGU4fQ==
解码
得到flag

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Flag:

key{68743000650173230e4a58ee153c68e8}