OOBKey: Key Exchange with Implantable Medical Devices Using Out-Of-Band Channels

Abstract

Implantable Medical Devices (IMDs) are widely deployed today and often use wireless communication. Establishing a secure communication channel to these devices is challenging in practice. To address this issue, researchers have proposed IMD key exchange protocols, particularly ones that leverage an Out-Of-Band (OOB) channel such as audio, vibration and physiological signals. While these solutions have advantages over traditional key exchange, they are often proposed in an ad-hoc manner and lack a systematic evaluation of their security, usability and deployability properties. In this paper, we provide an in-depth analysis of existing OOB-based solutions for IMDs and, based on our findings, p..