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Hi, I'm quite new to proxmark. During my experiments I've noticed that Proxmark is comunicating only on 106k bit/s so it won't catch for example parts of the sniffing on higher speeds. I tried to track it down to fpga image but since i have no previous experience with neither verilog or vhdl its complete mess for me.
Is there any way to change the speed?
I would appreciate any hints or comments
Thanks
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What requires the 423kbps bandwith? Can you show the card specs or the ISO standard that require that?
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I noticed this when I was trying to snoop communication between the terminal and Mifare DESFire in our university library. Proxmark intercepted anticollision loop and the usual communication including ATS but then nothing. The same goes for java contactless payment card. Even if I use Proxmark as an emulator and try to emulate comunnication where TA(1) byte of ATS is different from x000 ( 106k bit/s ) it "breaks" down. I tried it both on Cardman 5310 and ACR 122 but it is followed by deselect command, when I use x000 its fine and the simulation ends up correctly. From this I deduce that the problem is in com speed.
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How did you arrive at 423kbps?
DESFire has an activation at 106kbps which from there can step up to 848kbps for application data.
Higher bit rates used are 212, 424 and 848. I'm not aware of any other speeds that NXP use for this.
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Sorry, I made bad rounding, I meant 424kbps
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No need for apologies! I was curious how you arrived at that figure - what equipment you used etc...?
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Does this mean that the PM3 can't snoop DESFire successfully.......well, that sucks. Why would this be? Is the DESFIre card more awesome than the PM3 or does the PM3 need an FPGA tweak?
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