Authors:
Hassan N. Noura
1
;
Ola Salman
2
and
Ali Chehab
2
Affiliations:
1
American University of Beirut, Department of Electrical and Computer Engineering, Lebanon, Arab Open University, Department of Computer Sciences, Beirut, Lebanon
;
2
American University of Beirut, Department of Electrical and Computer Engineering, Lebanon
Keyword(s):
Cryptanalysis, Data Confidentiality, Cipher Scheme, Avalanche Effect, Key Derivation Function, Binary Diffusion Matrix, Security Analysis.
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.