Error while connecting with AuthKey

[chickysnail]

When I connect to my mi band 4 without an auth key all works However, when I add the auth key (no matter in the terminal or create the file auth_key.txt), it gives the following error:

python3 miband4_console.py -m <MAC> -k <AUTHKEY>
2022-11-11 23:01:54,391 miband (INFO) > Connecting to F8:08:75:B1:A6:3D
2022-11-11 23:01:55,589 miband (INFO) > Connected
2022-11-11 23:02:01,318 miband (INFO) > Enabling Auth Service notifications status...
2022-11-11 23:02:01,448 miband (INFO) > Requesting random number...
2022-11-11 23:02:01,468 miband (INFO) > Sending encrypted random number
Traceback (most recent call last):
  File "/home/artem-linux-usb/miband4/miband4_console.py", line 226, in <module>
    success = band.initialize()
  File "/home/artem-linux-usb/miband4/miband.py", line 242, in initialize
    self._req_rdn()
  File "/home/artem-linux-usb/miband4/miband.py", line 259, in _req_rdn
    self.waitForNotifications(self.timeout)
  File "/home/artem-linux-usb/.local/lib/python3.10/site-packages/bluepy/btle.py", line 560, in waitForNotifications
    resp = self._getResp(['ntfy','ind'], timeout)
  File "/home/artem-linux-usb/.local/lib/python3.10/site-packages/bluepy/btle.py", line 416, in _getResp
    self.delegate.handleNotification(hnd, data)
  File "/home/artem-linux-usb/miband4/miband.py", line 38, in handleNotification
    self.device._send_enc_rdn(random_nr)
  File "/home/artem-linux-usb/miband4/miband.py", line 263, in _send_enc_rdn
    cmd = self._send_enc_key + self._encrypt(data)
  File "/home/artem-linux-usb/miband4/miband.py", line 269, in _encrypt
    aes = AES.new(self.auth_key, AES.MODE_ECB)
  File "/home/artem-linux-usb/.local/lib/python3.10/site-packages/Crypto/Cipher/AES.py", line 95, in new
    return AESCipher(key, *args, **kwargs)
  File "/home/artem-linux-usb/.local/lib/python3.10/site-packages/Crypto/Cipher/AES.py", line 59, in __init__
    blockalgo.BlockAlgo.__init__(self, _AES, key, *args, **kwargs)
  File "/home/artem-linux-usb/.local/lib/python3.10/site-packages/Crypto/Cipher/blockalgo.py", line 141, in __init__
    self._cipher = factory.new(key, *args, **kwargs)
SystemError: PY_SSIZE_T_CLEAN macro must be defined for '#' formats

I checked that my phone is disconnected I did not change anything in the code How do I fix that?

Thanks

[chickysnail]

General info about miband4:

Soft revision: V1.0.9.68 Hardware revision: V0.25.67.21 Serial: 674962bdd0f1 Battery: 86 Time: 2022-11-11T23:13:26

[asanghc]

I'm having what looks like the exact same issue. This is on an arch linux derivative in case that matters. 6.2.8-zen1-1-zen

2023-03-27 22:02:27,923 miband (INFO) > Connecting to ZOINK 2023-03-27 22:02:30,451 miband (INFO) > Connected 2023-03-27 22:02:46,609 miband (INFO) > Enabling Auth Service notifications status... 2023-03-27 22:02:46,799 miband (INFO) > Requesting random number... 2023-03-27 22:02:46,878 miband (INFO) > Sending encrypted random number Traceback (most recent call last): File "/tmp/miband4/miband4_console.py", line 226, in success = band.initialize() File "/tmp/miband4/miband.py", line 242, in initialize self._req_rdn() File "/tmp/miband4/miband.py", line 259, in _req_rdn self.waitForNotifications(self.timeout) File "/home/user/.local/lib/python3.10/site-packages/bluepy/btle.py", line 560, in waitForNotifications resp = self._getResp(['ntfy','ind'], timeout) File "/home/user/.local/lib/python3.10/site-packages/bluepy/btle.py", line 416, in _getResp self.delegate.handleNotification(hnd, data) File "/tmp/miband4/miband.py", line 38, in handleNotification self.device._send_enc_rdn(random_nr) File "/tmp/miband4/miband.py", line 263, in _send_enc_rdn cmd = self._send_enc_key + self._encrypt(data) File "/tmp/miband4/miband.py", line 269, in _encrypt aes = AES.new(self.auth_key, AES.MODE_ECB) File "/home/user/.local/lib/python3.10/site-packages/Crypto/Cipher/AES.py", line 95, in new return AESCipher(key, *args, kwargs) File "/home/user/.local/lib/python3.10/site-packages/Crypto/Cipher/AES.py", line 59, in init blockalgo.BlockAlgo.init(self, _AES, key, *args, *kwargs) File "/home/user/.local/lib/python3.10/site-packages/Crypto/Cipher/blockalgo.py", line 141, in init self._cipher = factory.new(key, args, kwargs) SystemError: PY_SSIZE_T_CLEAN macro must be defined for '#' formats

[bkutasi]

Im facing the same issue without an easy solution.