CID/NAD rule with MFPlus card keys

[Ella Tan]

Hi Guys,

Just want to check with you the behavior of my MiFare Plus 2k card:

Scenario 1:
1) set CID in ATS to 00 (CID not enabled and NAD not supported )
2) create MFP card
3) do a reset and external authenticate
4) send APDU FF CC 00 00 1B AE 08 01 00 00 15 0A 00 A8 00 90 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
>> SW 9000

Scenario 2:
1) set CID in ATS to 01 (CID not enabled and NAD supported )
2) create MFP card
3) do a reset and external authenticate
4) send APDU FF CC 00 00 1B AE 08 01 00 00 15 0A 00 A8 00 90 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
>> SW 6E00

Scenario 3:
1) set CID in ATS to 02 (CID enabled and NAD not supported )
2) create MFP card
3) do a reset and external authenticate
4) send APDU FF CC 00 00 1B AE 08 01 00 00 15 0A 00 A8 00 90 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
>> SW 9000

Based on the 3 scenarios, looks like if the NAD is supported I am able to send successfully the MFP card key.
Is this behavior correct, is MFP card key setting dependent with NAD, or should it be dependent with CID or what?

Hope to hear from u guys soon, TIA.

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[TapLinx Support]

Hi Ella,

Do you have a question for us that we can answer as well?

The TapLinx team

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[Ella Tan]

Based on the 3 scenarios stated, looks like if the NAD is not supported I am able to send successfully the MFP card key.
Is this behavior correct, is MFP card key setting dependent with NAD, or should it be dependent with CID or what?

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