Abstract
The proposed method L2D-CASKE, the lightweight 2dimensional (2-D) Cellular Automata (CA) based symmetric key encryption algorithm is a 128 bit length that allows a key length of 128 bits. It is designed as a lightweight encryption algorithm. As it is light weight, it can be easily applied on small devices such as wireless sensor motes, smart cards and other PDAs. An encryption algorithm having simple loop operations, based on iterative parameters is used in this work. A number of sequences and operations are used for this purpose. In this paper, an CA based S-Box is proposed for the L2DCASKE algorithm and the modified algorithm was verified using MATLAB 7.7 (R2008). To achieve this, the algorithm uses loop design based on iterations. Then the algorithm with the S-Box is tested for its strength compared to the conventional algorithm.
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