Poster: Near field communication based access control for wireless medical devices

Security of wireless medical devices is critical for patient safety because security attacks may directly hurt patients' health. In this paper, we design a novel access control scheme based on bi-channel and multi-factor authentication for wireless medical devices. Our scheme utilizes near field communication (NFC) to perform device pairing, which supports key exchange between a device and a reader in short communication range (<=6cm) with bounded response time. To further defend against attacks when a malicious reader is placed within the device's communication range in crowded situations, we design a crowd detection algorithm using WiFi and user's smart phone to assist the key exchange. Our analyses and experiments show that our security schemes are effective and efficient.