Contents

• Introduction
  • Cryptology
  • Some Cryptosystems Based on Dynamical Systems
• CA-Cryptosystems: Generalities
  • Cellular Automata
    • Irreversible Rules
    • Reversible Rules
  • Overview of CA-1.0
    • Blocks, Links, and Chains
      • Chains.
    • Rounds, Subrounds, and Phases
• CA-1.0: Specification Details
  • Diffusion Phase
    • Rule Generation
    • Rule Application
  • Substitution Phase
    • Rule Generation
    • Rule Application
  • Link Encryption
• A High-Aspect-Ratio Variant
• Differential Cryptanalysis
  • Block Differences
    • Differential cryptanalysis of rule 30.
  • Link Differences
• Discussion
  • Acknowledgements
  • Figure Captions
• References
• About this document ...