Improved Classical Cipher for Healthcare Applications

Abstract E-health is rapidly picking up the gear and providing lots of services. It facilitates novel solutions for the problems suffered by the aged people as well as the people affected with chronic diseases. Apart from the above services, it devotes much interest in personal fitness. The healthcare system makes use of wearable wireless sensors which are implanted in patients, allow the monitoring of the health status at all time. The data collected from the patients transmitted through the network to the clinic or the doctor for a detailed diagnosis. Since healthcare applications are dealing with highly sensitive data, strong cryptographic algorithms should be incorporated for providing confidentiality. However, due to the computational and energy limitations of wireless devices we are forced to implement light weight ciphers which are computationally feasible in achieving confidentiality. This paper proposes a variant of hill cipher having two key matrices to add extra security to health related data.

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