ctf实验-rot13-加密解密（附flag）

ctf实验-rot13-加密解密

57R9S980RNOS49973S757PQO9S80Q36P（md5不解密）,flag格式为flag{解密内容}

方法一：使用python解码

# author :  吉米
# creat time : 2022/12/19
# -*- coding: utf-8 -*-


def decoder(cipher):
    crypt_list = list(cipher)
    After_decryption = ""
    num = 13
    for ch in crypt_list:
        ch = ord(ch)
        if ord('a') <= ch <= ord('z'):
            ch = ch + num
            if ch > ord('z'):
                ch -= 26
        if ord('A') <= ch <= ord('Z'):
            ch = ch + num
            if ch > ord('Z'):
                ch -= 26
        a = chr(ch)
        After_decryption += a

    print('After_decryption:'+After_decryption)


if __name__ == '__main__':
    ciphertext = input("ciphertext:")
    decoder(ciphertext)
    print("已解码！")

截图：

方法二：在线rot13解码

在线平台推荐：http://xiaoniutxt.com/str_rot13.html

flag{57E9F980EABF49973F757CDB9F80D36C}