Secure and Efficient SIMON LEA Hybrid Encryption Scheme for Web of Things Environments
DOI:
https://doi.org/10.63503/j.ijaimd.2026.252Keywords:
Web of Things (WoT), SIMON, LEA, SHA-256, 4D-NSJR Chaotic System, NIST ValidationAbstract
Given the development of the Web of Things (WoT), cryptographic protocols are increasingly sought after that are both highly secure and utilize scarce resources. Thus, in this paper, we describe a new hybrid cryptographic algorithm, a SIMON-LEA cipher hybrid. The resulting scheme is a neutral security solution that can be applied in both software and hardware platforms. Additionally, data integrity and authentication have been achieved by the use of a secure message digest that is generated using the SHA- 256 hash algorithm. The other significant development in the structure is to feed the output of the SHA-256 into a 4D-NSJR chaotic system, which generates dynamical and nonlinear message-specific sub-keys. This is a nice way of eliminating flaws that accompany fixed key schedules and linear cryptanalysis. A rigorous test of the security of the proposed model was done using the NIST Statistical Test Suite; it passed all 15 tests at a higher P -value and avalanche effect of over 50%. It has been experimentally demonstrated that the hybrid scheme of the SIMON-LEA-SHA256 scheme achieves a 34% performance improvement and much lower memory footprint compared to the more conventional AES-128 scheme and Hybrid-SIMON-SPECKey scheme. This paper will offer a scalable and energy-saving security design for the transmission of sensitive real-time data in WoT networks by combining SHA256 integrity checking with the 4D-NSJR chaotic system to produce dynamically changing keys.
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