03.03.2022 | Research Article-Computer Engineering and Computer Science
bFLEX
-\(\gamma \): A Lightweight Block Cipher Utilizing Key Cross Approach via Probability Density Function
Erschienen in: Arabian Journal for Science and Engineering | Ausgabe 8/2022
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Abstract
bFLEX
-\(\gamma \) has been proposed in which the bit length of the ciphertext gets changed in the intermediate rounds. The key scheduling of the proposed cryptosystem takes place with the random diffusion of the auxiliary vector anticipated by a key crossing technique and linear shift feedback register (LFSR). Simulation results indicate that the proposed bFLEX
-\(\gamma \) gives a satisfying level of security and robustness against linear cryptanalysis, differential cryptanalysis, eXtended Sparse Linearization (XSL) attacks and regression analysis attacks. The proposed cryptosystem is also validated by 0-1 balance factor of \(0.020925\%\) and a kurtosis of 2.55, showing platykurtic in nature. All the statistical features and efficiency confirm that bFLEX
-\(\gamma \) is very suitable for lightweight applications demanding data confidentiality.