RFID 2 + cardputer or stickC-plus2

[geex3]

Hi!
I have RFID 2 module and try to use it with cardputer or stickC-plus2 with Bruce on the board.
I am unable to read any NFC cards written by FlipperZero or NFC Tools.

When I try to read written cards I see

Device type: Mifare 1KB
UID: XX...
ATQA: 00 04
SAK: 08
[!]: Failed authenticating

Is my RFID 2 module broken?

I don't have an account on Discord to post on Bruce group - they demand phone number. LOL

[robski]

@geex3 is your rfid 2 works ok with uiflow2 or arduinoon same devices?

[geex3]

@robski said in RFID 2 + cardputer or stickC-plus2:

uiflow2

I have only tested my rfid 2 module with cardputer and stickC-plus2 with Bruce fw on board.

[robski]

@geex3 so test it first with official firmware/software to know if it works correctly

[MWoods]

Your authentication failed because you are missing the keys for the rfid card. It does work in bruce but it`s really slow.
you should notice that it does work when it pops out the uuid.
Somehow Bruce seem to have trouble when you have to many custom keys on the key file try to keep it a really short list.

[Danieldsouza]

Your RFID 2 module is likely not broken. The "Failed authenticating" error is the key clue here.

Mifare 1KB cards use sector-based authentication with crypto keys. Bruce (and most generic RFID readers) will attempt the default keys (e.g. FF FF FF FF FF FF or A0 A1 A2 A3 A4 A5) to authenticate, but if FlipperZero or NFC Tools wrote data using custom or non-default keys, authentication will fail even though the UID and card type are read correctly.

Things to try:

1. Test with a blank/factory card. If it reads fine, your module is working.
2. Check what keys were used when writing via FlipperZero or NFC Tools and make sure Bruce is configured to use those same keys.
3. If the card was written with default keys, try a different card; it may have been locked or write-protected.

The fact that UID, ATQA, and SAK are being detected correctly strongly suggests the module is functional.