NTag424 DNA ReadData[CommMode.Full] returns 7E

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NTag424 DNA ReadData[CommMode.Full] returns 7E

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yasserdaheek
Contributor I

I'm trying to personalize an [NTag 424 DNA]
Everything is going well except one problem I'm facing in [ReadData] command (CommMode.Full).

I call [ChangeFileSettings] on the file_02 to make two changes:
1- CommMode => [Full]
2- [read/write/read_write/change] => need Key0 (not free)

I pass the data [03 00 00] to [ChangeFileSettings] and it works perfectly with good response.
And the [GetFileSettings] now returns [00 03 00 00 00 01 00] (which indecates that the CommMode is now indeed [Full] )

The [WriteData] command works well (CommMode.Full).
Now the problem is that the [ReadData] command returns [7Eh Command size not allowed]
( no matter what CommMode I use for it)

The [ReadData] works again in Plain mode if I revert the changes (make CommMode of the file [Plain] again)

here is the details of my ReadData example (Authed with Key0)

TI: 391267AA
KSesAuthENC: 2675CA630A2C87B4986AC116E66A0045
KSesAuthMAC: B89AD52AB517855F8695018883DEF90F
CmdCtr: 1
Params: (file:2, Offset: 0, Length: 255)
APDU Buffer: 90AD00000F02000000FF0000CC7137F33032F9F200
Response: 917E

Reader Hardware: ACR1281U-C1

Would you please help me get through this
What is the problem and how to overcome it
Thanks in advance.

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EduardoZamora
NXP TechSupport
NXP TechSupport

Hello @yasserdaheek

Could you please confirm if you are using a Reader Library from NXP?

Regards,
Eduardo.

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