title: Design of cryptographically secure AES like S-Box using second-order reversible cellular automata for wireless body area network applications.
abstract: In biomedical, data security is the most expensive resource for wireless body area network applications. Cryptographic algorithms are used in order to protect the information against unauthorised access. Advanced encryption standard (AES) cryptographic algorithm plays a vital role in telemedicine applications. The authors propose a novel approach for design of substitution bytes (S-Box) using second-order reversible one-dimensional cellular automata (RCA2) as a replacement to the classical look-up-table (LUT) based S-Box used in AES algorithm. The performance of proposed RCA2based S-Box and conventional LUT based S-Box is evaluated in terms of security using the cryptographic properties such as the nonlinearity, correlation immunity bias, strict avalanche criteria and entropy. Moreover, it is also shown that RCA2based S-Boxes are dynamic in nature, invertible and provide high level of security. Further, it is also found that the RCA2based S-Box have comparatively better performance than that of conventional LUT based S-Box.
authors.affiliation: Department of Electronics and Electrical Engineering , Indian Institute of Technology Guwahati , Assam 781039 , India.
authors.forename: Bhoopal Rao
authors.initials: BR
authors.lastname: Gangadari
authors.affiliation: Department of Electronics and Electrical Engineering , Indian Institute of Technology Guwahati , Assam 781039 , India.
authors.forename: Shaik
authors.initials: S
authors.lastname: Rafi Ahamed
keywords: AES cryptographic algorithm; LUT; RCA2; S-box; advanced encryption standard; avalanche criteria; body area networks; cellular automata; cryptographic properties; cryptography; data security; look-up-table; nonlinearity correlation immunity bias; second-order reversible cellular automata; second-order reversible one-dimensional cellular automata; security of data; substitution bytes; table lookup; telemedicine; telemedicine applications; wireless body area network applications