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Hello Boukalane,
You should have a look to the MIFARE DESFire EV1 architecture to understand how data is managed on this card. The DESFire supports a directory system which is called “application”. Before you write data to the card, you have to create an application with a set of permissions and keys and then you can create files.
The DESFire supports a so called “Native Command Set”, ISO/IEC 7816-4 command set and you can format a DESFire to a NFC Forum Type 4 Tag with an own command set.
The public datasheet can be found here:
MIFARE DESFire EV1:
http://www.nxp.com/documents/short_data_sheet/MF3ICDX21_41_81_SDS.pdf
MIFARE DESFire EV2:
http://www.nxp.com/documents/short_data_sheet/MF3DX2_MF3DHX2_SDS.pdf
To get the native datasheet, you have to sign a NDA. The ISO/IEC 7816-4 command set is published in the public data sheet and using the DESFire as Type 4 Tag, a application note is available:
http://www.nxp.com/documents/application_note/AN11004.pdf
Regards,
The TapLinx team
You should have a look to the MIFARE DESFire EV1 architecture to understand how data is managed on this card. The DESFire supports a directory system which is called “application”. Before you write data to the card, you have to create an application with a set of permissions and keys and then you can create files.
The DESFire supports a so called “Native Command Set”, ISO/IEC 7816-4 command set and you can format a DESFire to a NFC Forum Type 4 Tag with an own command set.
The public datasheet can be found here:
MIFARE DESFire EV1:
http://www.nxp.com/documents/short_data_sheet/MF3ICDX21_41_81_SDS.pdf
MIFARE DESFire EV2:
http://www.nxp.com/documents/short_data_sheet/MF3DX2_MF3DHX2_SDS.pdf
To get the native datasheet, you have to sign a NDA. The ISO/IEC 7816-4 command set is published in the public data sheet and using the DESFire as Type 4 Tag, a application note is available:
http://www.nxp.com/documents/application_note/AN11004.pdf
Regards,
The TapLinx team
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