Shirisha Reddy K, Balaraju M, Hetal Shah and Jyothi Agarwal
Contemporary development of Wireless Sensor Networks (WSNs) has enabled ubiquitous sensing and actuating for the creation of communication- actuation architecture known as the Internet of Things. The IOT infrastructure has an indispensable role in the E-health care environment and allows connections between different entities such as human beings (patients, medical staff, etc.), medical devices, wireless sensors etc. Cloud computing which provides rapid delivery of IT services in which resources can be retrieved from the Internet with minimal management effort thereby relying on sharing of resources to achieve coherence. Most of the modern and rapidly increasing trends deal with IOT and cloud together. E - Health smart system supports monitoring of a huge number of patients using WSNs and Cloud. Yet this paradigm doesn’t provide absolute security to the data transmission. There are several threats to data like denial of service attacks and modification or theft of the data. This might lead to sharing of data or passwords with unauthorized or fallacious recipients and diminution of user privacy. Thus in this paper, we propose an unwavering solution using a centralized - decentralized mechanism for the transmission of sensor data using WSNs, Cloud, Hardware Security Module, Block chain technology, and a central server to the doctor. The paramount idea is the distribution of public and private keys generated using RSA algorithm (embedded in Raspberry Pi) and DES algorithm (applied by the central server on a public key generated using RSA) between four parties providing the clients (doctor) to retrieve data (patient information) securely.
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