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Customize JavaCard ATR

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openxdev
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Customize JavaCard ATR

Post by openxdev » Fri Jan 28, 2022 3:43 am

I have a legacy contact card (non java card). I am able to emulate the legacy card command set. Would it be possible to also change the ATR of my javacard to be the same as my legacy card ? From my understanding, ATR defines card communication parameters and since each chip has its own properties, does this mean this is not possible ? Thanks.
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roundtable
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Re: Customize JavaCard ATR

Post by roundtable » Fri May 20, 2022 8:20 am

Yes, it is impossible to change ATR of javacard if you don't have its reference manual.
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