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I can't write 6 bytes to a file on a Desfire card #148

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crossmax opened this issue Aug 13, 2024 · 0 comments
Open

I can't write 6 bytes to a file on a Desfire card #148

crossmax opened this issue Aug 13, 2024 · 0 comments

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@crossmax
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Hello.
I can't figure out why I can't write 6 bytes to a file on a Desfire card.

The following are the values when i call to write_data function.

overhead_size: 8. __cmd_n: 14. length: 6. __d_size: 55.
frame_bytes: 14. bytes_send: 0. bytes_left: 55. 
*** write_data ***
===> 0000   90 3d 00 00 0d 06 00 00 00 06 00 00 38 6a e7 38 
===> 0010   58 a8 00 
<=== 0000   91 af

When I use another PCSC reader that it use libpcsclite library i get this for the same desfire file

===>     90 3D 00 00 0F 06 00 00 00 06 00 00 8E 66 E6 B0 DA 3C C6 FF 00 
<===     91 00

What is wrong if I sending to write function a value of 6 into length parameter?
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@crossmax