Physiological Signal Based Security

Body Area Networks (BANs) are inherently cyber-physical systems which interact with the human body by using sensors to collect, process and communicate health data (vital signals, temperature, pressure) from the person.

This information from the environment that is already being collected can be used to provide security to the BAN.

Physiological Value based Security (PVS) uses the vital signals of the human body that is collected during health monitoring operation to provide usable security to BAN.

[1] For PVS to succeed the scheme developed should have the following properties: Plethysmogram based Key Agreement protocol (PKA) uses PPG signals to provide PVS infrastructure to the BAN.

It provides secure key agreement between two sensors that wish to communicate in a BAN.

Figure 1. Physiological Value Based Key Agreement Protocol
Figure 2. Signal Processing for Extracting Common Features from 2 PPG Sensors on the Same Body