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NFC Overview  Author:  Quốc Minh Đức Since:  2008 Aug
Agenda <ul><li>Introduction   </li></ul><ul><li>Basic Features  </li></ul><ul><li>Related Technologies  </li></ul><ul><li>...
Introduction  – what is NFC?   <ul><li>N ear  F ield  C ommunication   </li></ul><ul><li>Short-range wireless communicatio...
Agenda <ul><li>Introduction  </li></ul><ul><li>Basic Features   </li></ul><ul><li>Related Technologies  </li></ul><ul><li>...
Basic Features  – short range wireless   <ul><li>Operating range <  20  cm  </li></ul><ul><ul><li>IrDA : max range ~ 1-5m ...
Basic Features  – RFID, contactless   <ul><li>RFID  : auto identification method using RF-waves  </li></ul><ul><ul><li>Ope...
Basic Features  – standardized   <ul><li>Incoporated proximity & vicinity card ( ISO-15693 ) ‏ </li></ul><ul><li>ISO/IEC a...
Basic Features  – communication modes   <ul><li>Passive:  </li></ul><ul><ul><li>The  Initiator  device provides a carrier ...
Agenda <ul><li>Introduction  </li></ul><ul><li>Basic Features  </li></ul><ul><li>Related Technologies   </li></ul><ul><li>...
Related technologies  – RFID   <ul><li>RFID stands for  R adio  F requency  ID entification </li></ul><ul><li>Auto identif...
Related technologies  – RFID   <ul><li>RFID  Tag  contains at least 2 parts: IC & antenna </li></ul><ul><li>IC :  stores a...
Related technologies  – Smart card   <ul><li>Pocket-sized card with embedded integrated circuits </li></ul><ul><li>Contact...
Related technologies  – Smart card   <ul><li>Contactless  smart cards: the chip communicates with the card reader through ...
Related technologies  – Contactless   <ul><li>MIFARE  : the most widely installed contactless smart card, by NXP Semicondu...
Related technologies  – MIFARE   <ul><li>MIFARE  Ultralight : has one-time-programmable ROM ‏ </li></ul><ul><li>MIFARE  St...
Agenda <ul><li>Introduction  </li></ul><ul><li>Basic Features  </li></ul><ul><li>Related Technologies  </li></ul><ul><li>A...
Applications  – brief usages   <ul><li>Card Emulation  </li></ul><ul><ul><li>Allows NFC-handset behave as a standard smart...
Applications  – even offline
Applications  – primarily for cell phones   <ul><li>Nokia 6131:  first NFC phone ( emulate MIFARE 4k card )   </li></ul>
Applications  – basic ones
Applications  – more common
Applications  – multipurpose
Agenda <ul><li>Introduction  </li></ul><ul><li>Basic Features  </li></ul><ul><li>Related Technologies  </li></ul><ul><li>A...
Security aspects  <ul><li>Despite short range, NFC  alone  does not ensure secure communications . </li></ul><ul><ul><li>F...
Q & A <ul><li>References  :  </li></ul><ul><ul><li>www.nfc-forum.org/specs/   </li></ul></ul><ul><ul><li>www.gsmworld.com/...
Bonus  – NFC Forum main members
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Nfc

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  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • 07/22/08 Chung Khanh Duy
  • Transcript of "Nfc"

    1. 1. NFC Overview Author: Quốc Minh Đức Since: 2008 Aug
    2. 2. Agenda <ul><li>Introduction </li></ul><ul><li>Basic Features </li></ul><ul><li>Related Technologies </li></ul><ul><li>Applications </li></ul><ul><li>Security Aspects </li></ul>
    3. 3. Introduction – what is NFC? <ul><li>N ear F ield C ommunication </li></ul><ul><li>Short-range wireless communication technology. </li></ul><ul><li>Created by NFC Forum ( Philips, Sony, Nokia,... ) ‏ </li></ul><ul><li>Standard, extends ISO-14443 (proximity card) </li></ul><ul><ul><li>Contactless </li></ul></ul><ul><ul><li>Radio-frequency Identification ( RFID ) </li></ul></ul><ul><li>Primarily aimed at usage in mobile phones </li></ul><ul><ul><li>As smart cards/readers (identification, financial, location,...) </li></ul></ul>
    4. 4. Agenda <ul><li>Introduction </li></ul><ul><li>Basic Features </li></ul><ul><li>Related Technologies </li></ul><ul><li>Applications </li></ul><ul><li>Security Aspects </li></ul>
    5. 5. Basic Features – short range wireless <ul><li>Operating range < 20 cm </li></ul><ul><ul><li>IrDA : max range ~ 1-5m </li></ul></ul><ul><ul><li>Blue-tooth : max range 10m (class 2), 100m (class 3) </li></ul></ul><ul><li>Data-rate : 106, 212, 424 kbps (NFCIP-1) , 848, 1696 kbps (NFCIP-2) ‏ </li></ul><ul><ul><li>IrDA : 9600 baud (Serial-IR), 1.152 Mbps (Medium-IR), 4 Mbps (Fast-IR) </li></ul></ul><ul><ul><li>Blue-tooth : 1 Mbps (version 1.2), 3 Mbps (version 2) </li></ul></ul>
    6. 6. Basic Features – RFID, contactless <ul><li>RFID : auto identification method using RF-waves </li></ul><ul><ul><li>Operating frequency : 13.56 MHz (+/- 7 kHz) </li></ul></ul><ul><li>“ Contactless technology” : short distance communication between devices not physically connected </li></ul><ul><li>NFC communication is triggered when two NFC-compliant devices are brought into close proximity ( good: about 1-4 cm ) </li></ul>
    7. 7. Basic Features – standardized <ul><li>Incoporated proximity & vicinity card ( ISO-15693 ) ‏ </li></ul><ul><li>ISO/IEC approved 2003 December ( ISO-18092 ) </li></ul><ul><li>Later, ECMA approved NFCIP-1 ( ECMA-340 ) and NFCIP-2 ( ECMA-352 / ISO-21481) </li></ul><ul><li>NFC Forum currently about 140 members . </li></ul><ul><ul><li>Defined a common data format : NFC Data Exchange Format . </li></ul></ul>
    8. 8. Basic Features – communication modes <ul><li>Passive: </li></ul><ul><ul><li>The Initiator device provides a carrier field (RF) and the Target device answers by modulating existing field. </li></ul></ul><ul><ul><li>Target device may draw power from the Initiator -provided electromagnetic field (thus called a transponder ). </li></ul></ul><ul><li>Active: </li></ul><ul><ul><li>Both Initiator and Target device communicate by alternately generating their own (RF) field. </li></ul></ul><ul><ul><li>A device deactivates its RF field while it is waiting for data. </li></ul></ul>
    9. 9. Agenda <ul><li>Introduction </li></ul><ul><li>Basic Features </li></ul><ul><li>Related Technologies </li></ul><ul><li>Applications </li></ul><ul><li>Security Aspects </li></ul>
    10. 10. Related technologies – RFID <ul><li>RFID stands for R adio F requency ID entification </li></ul><ul><li>Auto identification system . </li></ul><ul><li>Transmits the ID of an object ( Tag ) wirelessly by radio waves (to Reader s) . </li></ul><ul><li>NFC and RFID may share same standard ( as ProximityCard - ISO14443 ) in communication . </li></ul><ul><ul><li>But NFC operating range is much shorter than RFID range. </li></ul></ul>
    11. 11. Related technologies – RFID <ul><li>RFID Tag contains at least 2 parts: IC & antenna </li></ul><ul><li>IC : stores and processes information, modulate and demodulate a (RF) signal </li></ul><ul><li>Antenna : receiving and transmitting the signal. </li></ul><ul><li>Tag classification : passive, semi-passive, active. </li></ul>
    12. 12. Related technologies – Smart card <ul><li>Pocket-sized card with embedded integrated circuits </li></ul><ul><li>Contact smart cards: have a small chip on the front . When inserted into a reader, the chip makes contact with electrical connectors. </li></ul>
    13. 13. Related technologies – Smart card <ul><li>Contactless smart cards: the chip communicates with the card reader through RFID induction technology. </li></ul>
    14. 14. Related technologies – Contactless <ul><li>MIFARE : the most widely installed contactless smart card, by NXP Semiconductor . </li></ul><ul><li>FeliCa : contactless smart card system, by Sony . Primarily used in electronic money cards (such as Octopus card in HongKong) . </li></ul>
    15. 15. Related technologies – MIFARE <ul><li>MIFARE Ultralight : has one-time-programmable ROM ‏ </li></ul><ul><li>MIFARE Standard : 1k, 4k . </li></ul><ul><li>MIFARE DESFire : 2k, 4k , 8k, SAM, ... </li></ul><ul><ul><li>Security by cryptography: DES , 3-DES , AES , ... </li></ul></ul><ul><ul><li>Use multi-keys and multi-sectors to enhance security </li></ul></ul><ul><li>MIFARE Pro : </li></ul><ul><ul><li>Dual-interface (hybrid) : contact and contactless . </li></ul></ul>
    16. 16. Agenda <ul><li>Introduction </li></ul><ul><li>Basic Features </li></ul><ul><li>Related Technologies </li></ul><ul><li>Applications </li></ul><ul><li>Security Aspects </li></ul>
    17. 17. Applications – brief usages <ul><li>Card Emulation </li></ul><ul><ul><li>Allows NFC-handset behave as a standard smart card . Supported by JavaME Contactless Communication API s ( JSR-257 ) . </li></ul></ul><ul><li>Read/Write </li></ul><ul><ul><li>Allows application transmit NFC-Forum defined messages . </li></ul></ul><ul><li>Peer-to-peer </li></ul><ul><ul><li>Device-to-device link level communication . </li></ul></ul>
    18. 18. Applications – even offline
    19. 19. Applications – primarily for cell phones <ul><li>Nokia 6131: first NFC phone ( emulate MIFARE 4k card ) </li></ul>
    20. 20. Applications – basic ones
    21. 21. Applications – more common
    22. 22. Applications – multipurpose
    23. 23. Agenda <ul><li>Introduction </li></ul><ul><li>Basic Features </li></ul><ul><li>Related Technologies </li></ul><ul><li>Applications </li></ul><ul><li>Security Aspects </li></ul>
    24. 24. Security aspects <ul><li>Despite short range, NFC alone does not ensure secure communications . </li></ul><ul><ul><li>For security, applications have to use higher-level protocol (SSL) . </li></ul></ul><ul><li>Eavesdropping : The RF signal for the wireless data transfer can be picked up with antennas </li></ul><ul><li>Data modification : possible, e.g. with an RFID jammer </li></ul><ul><li>Relay attack : forward request of the reader to the victim and relay back its answer to the reader in real time </li></ul>
    25. 25. Q & A <ul><li>References : </li></ul><ul><ul><li>www.nfc-forum.org/specs/ </li></ul></ul><ul><ul><li>www.gsmworld.com/documents/nfc_services_0207.pdf </li></ul></ul><ul><ul><li>www.ecma-international.org/publications/standards/Ecma-340.htm </li></ul></ul><ul><ul><li>www.ecma-international.org/publications/standards/Ecma-352.htm </li></ul></ul><ul><ul><li>www.crypto.rub.de/imperia/md/content/seminare/itsss07/ </li></ul></ul><ul><ul><li>www.jcp.org/en/jsr/detail?id=257 </li></ul></ul>Thank you :-)
    26. 26. Bonus – NFC Forum main members
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