Encryption algorithm using Programmable Cellular Automata

In this paper is developed a high-performance encryption system that works according with the Programmable Cellular Automata (PCA) theory. The essence of the theoretical and practical efforts which are done in this new field is represented by the idea that bio-inspired based cryptosystems are capable to have similar performances regarding the classic methods based on computational techniques. The proposed encryption and decryption modules are identically and the cryptosystem is featured by its large key space and high speed due to cellular automata's parallel information processing. The PCA block cipher has been implemented in software using C# programming language and is used, as a dynamic library, in order to assure the encryption of medical data sent over the internet.