Dynamic fine-grained localization in Ad-Hoc networks of sensors
Proceedings of the 7th annual international conference on Mobile computing and networking
Secure Location Verification Using Radio Broadcast
IEEE Transactions on Dependable and Secure Computing
Security and Privacy for Implantable Medical Devices
IEEE Pervasive Computing
Lifelogging memory appliance for people with episodic memory impairment
UbiComp '08 Proceedings of the 10th international conference on Ubiquitous computing
Wireless device identification with radiometric signatures
Proceedings of the 14th ACM international conference on Mobile computing and networking
Proximity-based access control for implantable medical devices
Proceedings of the 16th ACM conference on Computer and communications security
Aggregate and verifiably encrypted signatures from bilinear maps
EUROCRYPT'03 Proceedings of the 22nd international conference on Theory and applications of cryptographic techniques
Enforcing spatial constraints for mobile RBAC systems
Proceedings of the 15th ACM symposium on Access control models and technologies
Realization of RF distance bounding
USENIX Security'10 Proceedings of the 19th USENIX conference on Security
Secure positioning in wireless networks
IEEE Journal on Selected Areas in Communications
Security and Interoperable-Medical-Device Systems, Part 1
IEEE Security and Privacy
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The ubiquity of mobile devices has increased the convenience of communication but it has also introduced personal privacy concerns. In the domain of portable medical records, it is vital to provide authentication which protects personal information from unauthorized users who are located out of legitimate regions. To support such location-based authentication, one possible approach in medical systems is exploiting distance-bounding protocols which allow detecting a user's current location to determine whether the user is in trusted physical locations such as a doctor's office. However, sensors that enable distance-bounding protocols are expensive and not widely deployed yet since the required protocols typically need special devices such as devices utilizing ultrasound. To overcome the lack of device deployment, we propose a secure proximity-based access control scheme based on the use of multiple location based service (LBS) devices utilizing Bluetooth which is cheap and already widely used. Furthermore, we provide several ways to prevent various attacks. We report experimental performance results which indicate that access control is executed within 100 ms on Intel i7 processor and in about two seconds on the Android platform. Furthermore, our proposed system achieves communication overhead in O(1) as opposed to digital signatures which grow in O(n).