Security and Privacy in Pervasive/Ubiquitous Computing Systems

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Presentation transcript:

Security and Privacy in Pervasive/Ubiquitous Computing Systems Chair Professor Chin-Chen Chang Feng Chia University National Chung Cheng University National Tsing Hua University http://msn.iecs.fcu.edu.tw/~ccc

Outline Mobile services Radio Frequency Identification (RFID) Roaming between cellular network and WLAN MSN lab

Mobile services (1/4) MSN lab

Mobile services (2/4) MSN lab

Mobile services (3/4) MSN lab

Treats ? (4/4) User perspective Network perspective Spoofing Framing Denial-of-service Network perspective Passive Active 1. Eavesdropping 2. Traffic analysis 1. Masquerading 2. Replay 3. Message modification MSN lab

Spoofing MSN lab

Framing Legitimate? Bogus? MSN lab

Denial-of-service MSN lab

RFID (1/4) Tag Reader Database Antenna MSN lab

RFID (2/4) Shopping Library Transportation Household appliance … MSN lab

Risk? (3/4) Eavesdropping Traffic analysis Replay attack Position detection Physical attack MSN lab

Issue? (4/4) Anonymity -> Privacy Synchronization Authentication Efficiency MSN lab

Roaming (1/3) Access to the Internet anywhere & anytime Mobile device Base station AP AS ISP WLAN Cellular network AS: Authentication server AP: Access point MSN lab

Roaming (2/3) Cellular networks : wide service areas and continuous pervasive access WLAN : high-speed pervasive communications How to integrate? MSN lab

Issues? (3/3) Mutual authentication Anonymous service Charging MSN lab

Conclusions The biggest risk: eavesdropping The limitation: power & computing capability MSN lab

Security and Privacy in Pervasive/Ubiquitous Computing Systems MSN lab

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