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Lightweight Cryptography for the Connected Car/ITS Security

Explore the importance of lightweight cryptography in securing Connected Car data, its applications in constrained environments, and the need for standardization for ITS security. Learn about the benefits, challenges, and recommendations highlighted at the ITU Workshop on ICT Security Standardization for Developing Countries in Geneva, Switzerland. Discover the role of lightweight cryptography in safeguarding Controller Area Network (CAN) and V2X Communication Data.

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Lightweight Cryptography for the Connected Car/ITS Security

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  1. ITU Workshop on “ICT Security Standardizationfor Developing Countries” (Geneva, Switzerland, 15-16 September 2014) Lightweight Cryptography for the Connected Car/ITS Security Shiho Moriai Director, Security Fundamentals Laboratory, Network Security Research Institute NICT

  2. The Connected Car http://johndayautomotivelectronics.com/top-five-technologies-enabling-the-connected-car/

  3. More Attack Surfaces! http://gigaom.com/2013/08/06/ciscos-remedy-for-connected-car-security-treat-the-car-like-an-enterprise/

  4. Much data to be protected Controller Area Network (CAN) Data http://www.aa1car.com/library/can_systems.htm

  5. Much data to be protected V2X Communication Data http://telematicswire.net/connected-cars-and-smart-homes-coherence-of-a-convergence-platform/

  6. Lightweight Cryptography • “Cryptography tailored for implementation in constrained environments” [ISO/IEC 29192-1] • Constraints: chip area, energy consumption, power, memory, communication bandwidth, execution time, etc. • Applications: RFID tags, sensors, health-care/medical devices, low-energy applications, low-latency applications, … • Suitable for Internet of Things!

  7. Lightweight Cryptography • R&D • EU ECRYPT-I (2004-2007), ECRYPT-II (2008-2013) • European Network of Excellence for Cryptology funded within ICT Programme of the European Commission's FP6, FP7 • Japan CRYPTREC (2013-) • Standardization • ISO/IEC 29192 • Lightweight Cryptography, in ISO/IEC JTC SC27 WG2 since 2009

  8. Why Lightweight Cryptography for Vehicles? • A modern vehicle contains 50 to 100 or more electronic control units (ECUs). • collection of embedded constrained devices • CAN bus data field is (only) 32 bits. http://www.digikey.jp/ja/articles/techzone/2014/jul/what-engineers-need-to-know-when-selecting-an-automotive-qualified-mcu-for-vehicle-applications

  9. Why Lightweight Cryptography for Vehicles?

  10. Why Lightweight Cryptography for Vehicles? Chip Area(Gate Size) [Kgate] Lightweight block ciphers Small (=low power) Suzuki, Sugawara, Saeki, “On Hardware Implementation of Lightweight /Low-Latency Cryptography”, SCIS2014

  11. Low Latency • Real-time response is crucial in Advanced Driver Assistance Systems (ADAS). • AES can’t achieve encryption in dozens of nano-seconds within dozens of kgates. Latency [ns] Chip Area [Kgate] Small Fast

  12. Conclusions and Recommendations • Introduced lightweight cryptography • Suitable for constrained devices, the connected cars and ITS security. • Some lightweight algorithms are mature and standardized in ISO/IEC. • It’s time to standardize practical standards for connected cars and ITS security in ITU-T. • Collaboration with automotive industry is necessary.

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