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Hi Christophe,
There is nothing wrong to use plain APDU commands to communicate with the Ultralight. Unfortunately the 3DES authenticate cannot be split into parts.
You should think about to implement the authenticate response into the reader terminal. It makes sense also especially in view of the security. You transform sensitive information over the net with your approach.
The 3DES mutual authentication procedure is not very difficult to implement it in the reader software. There is also the way to use the SAM AV2 in your reader station for highest security. Here the SAM contains all keys and make the authenticate calculation.
Regards,
The MIFARE Team
There is nothing wrong to use plain APDU commands to communicate with the Ultralight. Unfortunately the 3DES authenticate cannot be split into parts.
You should think about to implement the authenticate response into the reader terminal. It makes sense also especially in view of the security. You transform sensitive information over the net with your approach.
The 3DES mutual authentication procedure is not very difficult to implement it in the reader software. There is also the way to use the SAM AV2 in your reader station for highest security. Here the SAM contains all keys and make the authenticate calculation.
Regards,
The MIFARE Team
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