DESFIRE EV1 – Authentication failure seen after successful writedata(2k3des)

[anitha chandrasekar]

I am using DESFIRE EV1 tag and doing following operations,
I am stuck and unable to proceed due to authentication error,

The steps followed are,
1) Formatted the card , selecting application 0, authenticating with 2k3des
2) Performed write as per the version1.7 using 2k3des.
> select application 0
> authenticate 2k3des
> create application APP_ID
> select application APP_ID
> create file
> authenticate 2k3des
> write data

RESULT -> SUCCESSFUL

Now I want to change the key from 2k3des to aes128.
Tried the following
STEP 1) format the card
> select application 0
> authenticate 2k3des
> format() called

RESULT -> W/System.err: com.nxp.nfclib.exceptions.InvalidResponseLengthException: Authentication Error

STEP 2) change key code,
> select application 0
> authenticate 2k3des

RESULT -> W/System.err: com.nxp.nfclib.exceptions.InvalidResponseLengthException: Authentication Error

So I see it fails for very first authentication,
My next steps which could not be proceeded because of authentication failure
> change key 2k3des to aes
> create application APP_ID
> select application APP_ID
> create file
> authenticate AES
> write data

Awaiting for the reply, Please let me know regarding the same.

Regards,
Anitha

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[TapLinx Support]

Hi Anitha,

Please look to my answers in the other threads.

Kind reagrds,
The TapLinx team

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