topic getting invalid response when write data to file (Desfire EV2) in NFC

getting invalid response when write data to file (Desfire EV2)

sivasaravanand — Mon, 02 Nov 2020 14:03:03 GMT

Hi Team,

After i changed the application default key to our custom key, when i write data to file, it is throwing an error "Invalid length".

find below is the full code.


Here the line, i am getting exception
#java  desFireEV2.writeData(fileNo, 0, data);java‌

Please let me know did i miss anything.
Thanks,
Shiva

java

Re: getting invalid response when write data to file (Desfire EV2)

Kan_Li — Tue, 05 Dec 2017 06:11:16 GMT

Hi Shiva,

Looks like you set the number of byte written to 0 in "desFireEV2.writeData(fileNo, 0, data);"

Have a great day,
Kan

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