Cellular automata: an ideal candidate for a block cipher

  • Authors:
  • Debdeep Mukhopadhyay;Dipanwita RoyChowdhury

  • Affiliations:
  • Indian Institute of Technology, Kharagpur, India;Indian Institute of Technology, Kharagpur, India

  • Venue:
  • ICDCIT'04 Proceedings of the First international conference on Distributed Computing and Internet Technology
  • Year:
  • 2004

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Abstract

Confusion and diffusion are two important requirements of the round of a block cipher In the present paper Cellular Automata (CA) has been identified as a mathematical tool to achieve these The analytical framework of the automata has been used to characterize a new class of linear CA and to implement the non-linearity through a non-linear reversible CA A generalized ideal structure of the block cipher round have been developed and has been shown to perform both encryption and decryption.