Authentication key file not supported - Linux

[batuhanfaik]

Bug report

Your Environment

• Netflix add-on version: 1.9.0
• Operating system version/name: Ubuntu 18.04
• Device model: Raspberry-Pi 3B

Used Operating system:

• Android
• iOS
• Linux
• OSX
• Raspberry-Pi
• Windows

Describe the bug

I had issues with logging in (#502) so I followed the instructions on here. I used Ubuntu 18.04 to create the .key file then transferred it to my Pi using scp. Then I tried to authenticate using the key and after entering the correct pin, I got the following message:
Exception: Authentication key file not supported

Debug log

The debug log (kodi.log file) can be found on this link:
https://paste.ubuntu.com/p/b3tnMTdzFC/

[batuhanfaik]

I've tried creating the key using Windows and everything worked fine. Probably there is an issue with the NFAuthenticationKey.py or credentials.py

[CastagnaIT]

it is all explained in the Issue thread
#502