Mifare Desfire ISO SELECT FILE Command

[narendc]

Hi,
I am trying to understand the usage of ISO SELECT FILE command on Desfire EV1 tag. I am refering to documentation page no 98 of 114. This page explain how to use FCI and I have tried using all commands but could not get value of FCI. I just a response 90 00. The document suddenly mentions of command SELECT DF command? is this a different command? I tried using P2=00, P1=0 and I have a file created with ID mentioned in the document. I am not able to get FCI file content.

Any help appreciated

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[TapLinx Support]

Hi Narendc,

The ISO commands are available for compatibility reasons of ISO7816-4. All ISO commands are wrapped to native commands on a DESFire. If you do not need to be compatible to ISO, I recommend to use the native DESFire commands.

The ISO7816-4 allows it to deal with files either with IDs or with DF names. That is the reason for the two types of commands.

Kind regards,
The TapLinx Team

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[narendc]

Hi,
Looks like my question was not clear. The feature that is explained in that section of the document is not available in native commands. Indeed that is a very good feature the document says this. When we select a application not only we get status 90 00 but also the content of a file with id 31 in that application folder.

With native command I have to do two separate request to achieve this. All I am asking is, since the document mentions about this feature of ISO commands, I could not reproduce it. If anybody in your tech support have done this, then I would like to know how?

regards
NarenDC

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