Design of cryptographically secure AES like S-Box using second-order reversible cellular automata for wireless body...

Area of Science:

• Biomedical engineering
• Cybersecurity
• Cryptography

Background:

• Data security is critical in wireless body area networks (WBANs) for biomedical applications.
• The Advanced Encryption Standard (AES) is vital for telemedicine security, relying on Substitution Bytes (S-Boxes).
• Classical look-up-table (LUT) based S-Boxes present security limitations.

Purpose of the Study:

• To propose a novel design for S-Boxes in AES using second-order reversible one-dimensional cellular automata (RCA²).
• To evaluate the security performance of the proposed RCA²-based S-Box against conventional LUT-based S-Boxes.

Main Methods:

• Designed a novel S-Box using second-order reversible one-dimensional cellular automata (RCA²).
• Evaluated cryptographic properties: nonlinearity, correlation immunity bias, strict avalanche criteria, and entropy.
• Compared the performance of RCA²-based S-Boxes with traditional LUT-based S-Boxes.

Main Results:

• RCA²-based S-Boxes demonstrate dynamic characteristics and invertibility.
• The proposed S-Boxes provide a high level of security.
• RCA²-based S-Boxes exhibit superior performance compared to conventional LUT-based S-Boxes.

Conclusions:

• The novel RCA²-based S-Box design offers enhanced security for AES in telemedicine applications.
• This approach provides a more robust and dynamic alternative to traditional S-Box implementations.
• The findings suggest significant improvements in data protection for wireless biomedical systems.