Abstract
Healthcare remote devices are recognized as a promising technology for treating health related issues. Among them are the wireless Implantable Medical Devices (IMDs): These electronic devices are manufactured to treat, monitor, support or replace defected vital organs while being implanted in the human body. Thus, they play a critical role in healing and even saving lives. Current IMDs research trends concentrate on their medical reliability. However, deploying wireless technology in such applications without considering security measures may offer adversaries an easy way to compromise them. With the aim to secure these devices, we explore a new scheme that creates symmetric encryption keys to encrypt the wireless communication portion. We will rely on chaotic systems to obtain a synchronized Pseudo-Random key. The latter will be generated separately in the system in such a way that avoids a wireless key exchange, thus protecting patients from the key theft. Once the key is defined, a simple encryption system that we propose in this paper will be used. We analyze the performance of this system from a cryptographic point of view to ensure that it offers a better safety and protection for patients.
Highlights
Implantable and Wearable Medical Devices (IMD & WMD) are currently the new trending technologies in personal healthcare systems
In our previous work [18], we developed a new way to generate secure symmetric encryption keys for the Implantable Medical Devices (IMDs) in order to cipher the wireless communication of IMDs
A set of statistical tests for the randomness of number sequences is described by The National Institute of Standards and Technology (NIST) [36] to ensure that the given random or pseudo-random generator can be used for cryptographic purposes
Summary
Implantable and Wearable Medical Devices (IMD & WMD) are currently the new trending technologies in personal healthcare systems. We will design a novel technique to generate pseudo-random keys to be used as cryptographic symmetric keys similar to the work in [8] This key will be employed to cipher the exchanged packets between the devices used by patients and their doctors. We present a new encryption system to protect the wireless communication between the IMDs. In the sender’s device, a key generator will generate an encryption key using a Pseudo-Random Number Generator (PRNG) based on a chaotic system [10]. In the sender’s device, a key generator will generate an encryption key using a Pseudo-Random Number Generator (PRNG) based on a chaotic system [10] This key will be applied to cipher the message to be sent by the device. Investigation of the encryption scheme within an on-body to off-body communication channel
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