# Password 3

## Task

This one won’t be so easy

File: password3.py

## Solution

This one was also very easy:

```python
def 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:

```python
base64_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))
```