Failed to transmit with protocol T1

[daneb-ifm]

Hello together,
I want to create a private key through piv function in v1.8.0 firmware. I receive the following error: Failed to transmit with protocol T1.
Any ideas? :)

Thanks!

1723       INFO pynitrokey.cli Timestamp: 2025-01-17 08:39:27.919986
1724       INFO pynitrokey.cli OS: uname_result(system='Windows', node='', release='10', version='10.0.26100', machine='AMD64')
1724       INFO pynitrokey.cli Python version: 3.9.13
1724       INFO pynitrokey.cli Cli arguments: ['nk3', 'piv', '--experimental', 'info']
1758       INFO pynitrokey.cli pynitrokey version: 0.7.3
1794       INFO pynitrokey.cli cryptography version: 44.0.0
1831       INFO pynitrokey.cli ecdsa version: 0.19.0
1860       INFO pynitrokey.cli fido2 version: 1.2.0
1923       INFO pynitrokey.cli pyusb version: 1.3.1
1954     WARNING pynitrokey.cli An unhandled exception occurred
Traceback (most recent call last):
  File "pynitrokey\cli\__init__.py", line 137, in main
  File "click\core.py", line 1161, in __call__
  File "click\core.py", line 1082, in main
  File "click\core.py", line 1697, in invoke
  File "click\core.py", line 1697, in invoke
  File "click\core.py", line 1697, in invoke
  File "click\core.py", line 1443, in invoke
  File "click\core.py", line 788, in invoke
  File "pynitrokey\cli\nk3\piv.py", line 175, in info
  File "pynitrokey\nk3\piv_app.py", line 84, in __init__
  File "smartcard\CardConnectionDecorator.py", line 86, in transmit
  File "smartcard\CardConnection.py", line 174, in transmit
  File "smartcard\pcsc\PCSCCardConnection.py", line 269, in doTransmit
smartcard.Exceptions.CardConnectionException: Failed to transmit with protocol T1. Zugriff verweigert : Zugriff verweigert  (0x00000005)
1957      DEBUG       root print: Critical error:
1957      DEBUG       root print: An unhandled exception occurred
1957      ERROR       root Failed to transmit with protocol T1. Zugriff verweigert : Zugriff verweigert  (0x00000005)
Traceback (most recent call last):
  File "pynitrokey\cli\__init__.py", line 137, in main
  File "click\core.py", line 1161, in __call__
  File "click\core.py", line 1082, in main
  File "click\core.py", line 1697, in invoke
  File "click\core.py", line 1697, in invoke
  File "click\core.py", line 1697, in invoke
  File "click\core.py", line 1443, in invoke
  File "click\core.py", line 788, in invoke
  File "pynitrokey\cli\nk3\piv.py", line 175, in info
  File "pynitrokey\nk3\piv_app.py", line 84, in __init__
  File "smartcard\CardConnectionDecorator.py", line 86, in transmit
  File "smartcard\CardConnection.py", line 174, in transmit
  File "smartcard\pcsc\PCSCCardConnection.py", line 269, in doTransmit
smartcard.Exceptions.CardConnectionException: Failed to transmit with protocol T1. Zugriff verweigert : Zugriff verweigert  (0x00000005)

[robin-nitrokey]

Hi @daneb-ifm, this looks like a permissions error. The command needs to be run as admin. If this does not fix the problem, you can check the “System” and “Application” categories in the Windows Event Viewer for more information on the error.

[daneb-ifm]

Hey @robin-nitrokey , thanks for the quick reply.
In the event viewer there are more informations available:

Smartcard-Lesegerät "Microsoft UICC ISO Reader 1" verweigerte IOCTL TRANSMIT: Zugriff verweigert. Wenn dieser Fehler weiterhin besteht, werden die Smartcard oder das Lesegerät möglicherweise nicht richtig ausgeführt.

Smartcard-Lesegerät "Microsoft UICC ISO Reader 1" verweigerte IOCTL POWER: Der an einen Systemaufruf übergebene Datenbereich ist zu klein.. Wenn dieser Fehler weiterhin besteht, werden die Smartcard oder das Lesegerät möglicherweise nicht richtig ausgeführt.

[daneb-ifm]

I tried now on another device and receive the following error now: StatusError(27264) the file (fido2/hid/windows.py) is used by another process

[mmerklinger]

Agree, the issue looks like a permission error. The log from the event viewer concerns a different smartcard reader, not the Nitrokey.

Can you please verify in the Windows Device Manager that you can see the Nitrokey there?
What you should see there is the following:

• Smart card readers -> Microsoft Usbccid Smartcard Reader (WUDF)
• Smart cards -> Identity Device (NIST SP 800-73 [PIV])

If the PIV smartcard is not properly recognized, the PIV commands will not work.