Abstract
Wireless medical sensor network is used in healthcare applications that have the collections of biosensors connected to a human body or emergency care unit to monitor the patient's physiological vital status. The real-time medical data collected using wearable medical sensors are transmitted to a diagnostic centre. The data generated from the sensors are aggregated at this centre and transmitted further to the doctor's personal digital assistant for diagnosis. The unauthorised access of one's health data may lead to misuse and legal complications while unreliable data transmission or storage may lead to life threatening risk to patients. So, this Letter combines the symmetric algorithm and attribute-based encryption to secure the data transmission and access control system for medical sensor network. In this work, existing systems and their algorithm are compared for identifying the best performance. The work also shows the graphical comparison of encryption time, decryption time and total computation time of the existing and the proposed systems.
Highlights
Wireless sensor network (WSN) is an upcoming technology in existing researches, which makes the human life more comfortable
Information on related works: In [5], a novel and lightweight system to secure wireless medical sensor networks (WMSNs) has been proposed, which involves four segments: (i) the system initialisation segment where the network server builds up a medical sensor network (MSN), (ii) the user joining segment where the user can interact with the MSN via commands, (iii) in the regular user segment, the medical data from each biosensor node is transmitted to the network server via the controller, (iv) in the user command segment, the network user can construct the new command and it can be sent to the network server through the proxy signature key
CP-attribute-based encryption (ABE) and advanced encryption standard (AES) have large encryption and decryption cost compared with AES and message digest 5 (MD5) algorithms because the session key is encrypted and decrypted before encryption and decryption of actual messages
Summary
Wireless sensor network (WSN) is an upcoming technology in existing researches, which makes the human life more comfortable. The recent progress in WSNs has given rise to its numerous application areas in healthcare. It has created a new field of wireless medical sensor networks (WMSNs). The data collected through biosensors are transmitted over wireless network to the diagnostic centre. In the proposed secured remote health monitoring system (SHS), both the encryption algorithm and access control mechanisms are combined together to provide integrity, authenticity and confidentiality of data. Blowfish encryption is used to transmit the examined medical data securely to the server of diagnostic centre.
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