ABE Based Raspberry Pi Secure Health Sensor (SHS)

Electronic health data collected from bio-medical sensors is having a profound and increasing impact on mobile health services. When transferred over the air this data should be accessible only to legitimate users such as doctors, nurses etc. In this paper, we propose a unique Secure Health Sensor (SHS) node which provides fine access control mechanism such that only legitimate users can access sensitive medical data. Medical data security is achieved through ensuring a secure communication by encrypting sensor data, preventing loss of sensor data by using wired connection between Raspberry Pi and sensors and using Ciphertext Policy Based Attribute Based Encryption (CP-ABE) to provide access control in multi-user enviroment. We propose storage of cyrptogrphic credentials on Raspbery Pi on hardware tamper resistant area such as Secure Element on form factors such as Go Trust microSD card. It comprises of java card applets used to store credentials and can be accessed by special securely compiled applications on the Raspbery Pi.