International Journal of Telecommunications & Emerging Technologies
Securing Internet-of-Things Data in a Healthcare Surveillance Network with a Hybrid Encryption Algorithm
Abstract
IoT-based healthcare solutions are used for remote healthmonitoring and diagnostics to minimize the cost of health careservices. Secure data communication is crucial for treatmentand monitoring. Furthermore, it is vital to safeguard thepatient's information from abuse and data manipulation whileit is in transit because other devices can easily trace it. IoTnetworks have limited CPU capability, memory, and power,making performing the expensive operations required byciphering algorithms challenging. As a result, they require alightweight security approach that consumes fewer resources.A hybrid cipher approach for safe data transport from IoThealthcare devices is proposed in this paper. Three cipheralgorithms are used in the encryption process, including amodified, lightweight Salsa20 with 16 words (each word is 32bits). To begin, for each block of sensing data, a five-dimensional chaotic map is employed to generate 32 keys of64-bit length. Second, to make the produced keys appeardynamic, random shifting is performed on them. Third, anexclusive-or operation is carried out between a newlyconstructed key, which includes sensing data, and modifiedSalsa20 words. Fourth, the proposed method improvessecurity by using the addition DNA operation between theresult of the previous step and the random selection word inSalsa20 state after both have been turned into DNA form.Finally, before sending data to the server, sensor data ishashed using the SHA3-256 hash method to assure dataintegrity. The hash data result, the DNA result afterconversion to a decimal number, and two random integers forshifting keys and picking Salsa20 words comprise the entiredelivered data. Based on tests done by NIST, the suggestedalgorithms provide data content security features like secrecy,authentication, and non-repudiation. They also work with alltypes of sensors to send secure data to the final controller.References (110)
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