2024强网青少创新赛部分WP

import base64, stringfrom ctypes import *import sysdefencrypt(text):    data_xor_iv = bytearray()    sbox = []    j = 0    x = y = k = 0    key = "1234"for i inrange(256):        sbox.append(i)else:for i inrange(256):            j = j + sbox[i] + ord(key[i % len(key)]) & 255            sbox[i] = sbox[j]            sbox[j] = sbox[i]else:for idx in text:                x = x + 1 & 255                y = y + sbox[x] & 255                sbox[x] = sbox[y]                sbox[y] = sbox[x]                k = sbox[sbox[x] + sbox[y] & 255]                data_xor_iv.append(idx ^ k ^ 17)else:return data_xor_ivif __name__ == "__main__":print("Please input your key and flag:")    key11 = int(input("keys:"))    str1 = str(input("flag:"))iflen(str1) != 42:print("length error!")        sys.exit()    lis1 = list(str1)    lis2 = [ord(lis1[i]) for i inrange(len(lis1))]for i inrange(len(lis2)):        lis2[i] = lis2[i] ^ key11else:        crypt1 = bytes(lis2)        crypt2 = bytes(encrypt(crypt1))        base2 = base64.b64encode(crypt2).decode()if base2 == "wM/Cya0b08LMlZeW2g5SEcKWjuyRlx3Og5yMgLsR6pLCwLTQkIfHHJHe":print("ok,you get the flag!")else:print("error!")