# Password 3
## Task
This one won’t be so easy
File: password3.py
## Solution
This one was also very easy:
```pythondef checkPassword(password):  if(len(password) != 40):    return False  newPass = list(password)  for i in range(0,40):    newPass[i] = chr(ord(newPass[i]) ^ 0x55)  finalPass = "".join(newPass)  passBytes = finalPass.encode("ascii")  base64_bytes = base64.b64encode(passBytes)  base64_string = base64_bytes.decode("ascii")  return base64_string == "FgwWARMuF2UhPQotZScKFTsxCjcVJmYKY2FqCiE9FSEmCjJlMTksKA=="```
This is just single-byte XOR. We just need to write the inverse of it:
```pythonbase64_string = "FgwWARMuF2UhPQotZScKFTsxCjcVJmYKY2FqCiE9FSEmCjJlMTksKA=="base64_bytes = base64.b64decode(base64_string)finalPass = base64_bytes.decode("ascii")newPass = list(finalPass)for i in range(0, 40):    newPass[i] = chr(ord(newPass[i]) ^ 0x55)print(''.join(newPass))```