Question

Why elgamal used in privacy protection of medical data?

Answer 1

This paper focus on how a wireless sensor network is used to sense the patient’s body condition and how to

transmit and receive the patient data to the patient database in a secured environment. The patient details

including temperature, heartbeat, and blood pressure are sensed using appropriate sensors and stored in the

server. The details are encrypted using Elgamal and Paillier key cryptosystem to ensure security. From the

server, the encrypted data is fetched and decrypted after authentication. To secure the patient data from the

inside attacks, a new data collection protocol[DCP] is proposed, where a sensor splits the sensitive patient data

into three components according to a random number generation based on hash function and send them to

servers via secure channels. Statistical analysis on the firmly distributed patient data which are accessible from

the cloud environment can be performed without compromising the patients’ privacy by using Paillier and

Elgamal cryptosystems. By this approach, secure storage and communication to store and retrieve the patient

data can be performed in a confidential mode.

Keywords-Wireless medical sensor network, patient data privacy, Paillier and Elgamal key