Efficient and Secure Cipher Scheme for Limited IoT Devices

Hassan Noura, Ola Salman, Ali Chehab

Abstract

In this paper, an effective and robust cipher scheme is proposed to cater for the resource-constrained nature of IoT devices. The proposed cipher scheme is a combination of static and dynamic cryptographic structures, towards ensuring better resistance and resilience against existing security attacks. More precisely, the proposed solution is designed to be a lightweight cipher scheme, iterating a round function just twice, along with a dynamic key-dependent block permutation. The proposed round function satisfies the required confusion and diffusion properties, and consequently, it guarantees the desired cryptographic aspects such as message and key avalanche effects. Finally, the security and performance tests confirm the effectiveness and the robustness of the proposed cipher solution in terms of security level, the associated delay and required resources.

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