IT Security Stack Exchange
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Questions tagged [nfc]

NFC (Near-Field Communication) is a short-range wireless technology, typically requiring a distance of 4cm or less to initiate a connection between two endpoints.

NFC enabled devices can communicate with each other by touching them together or bringing them into close proximity. Some anticipated applications include contactless financial transactions, data exchange, and simplified setup of more complex communications such as Wi-Fi or Bluetooth.

NFC-enabled devices may act as electronic identity documents and keycards used for authenticating a person. Communication is also possible between an NFC device and an unpowered NFC chip, called "NFC tag".

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What NFC protocol is used to read information on a Passport?

I'm experimenting with NFC and realized that my passport actually stores data that is only available when the passport is opened. (A closed passport doesn't seem to divulge any information) What sequence of instructions is required to read data…
makerofthings7
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Mifare DESFire EV1 UID Uniqueness?

I'm currently investigating the Mifare DESFire EV1 card and would like to know if there are the same issues with the UID as there were with the classic? Are the DESFire UID truely unique or have so many been made that UIDs are being…
jim
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How dangerous is negligent RFID / NFC card use?

Nowadays RFID / NFC is everywhere. From public transport use, door opening to Credit Cards. I see often people just passing their wallet in RFID/NFC readers to do all kind of operations. This seems to me that opens a new angle of attack to cards.…
nsn
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How is the timer implemented in mutual distance-bounding protocols?

I've come across several papers introducing the concept of mutual distance-bounding, where basically both sides can verify an upper bound of the distance in between, rather than having this unilateral relationship between a verifier and a prover.…
OrangeJusticeV
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How is a NFC session key created?

I was reading MIFARE DESFire EV1 document and noticed this: MIFARE DESFire EV1 and the reader device show in an encrypted way that they possess the same secret which especially means the same key; this not only confirms that both entities are…
Tankman六四
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Change NFC SAK Hard Coded to 08h

I am trying to copy some NFC card; however the SAK returned is always 08h using the command nfc-list. However looking through the actual content of the card, I can see that the byte associated to the SAK is different (88h). After making a full copy…
Ra'Jiska
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How does NFC card and reader transfer data?

Just out of curiosity. In our town we use NFC cards for the public transportation, so when you use the train you have to touch on and then touch off when getting off. I've recently found out that it is possible for us to view our entire travel…
snowday
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