Chaotic Coding and Cryptoanalysis

This paper deals with principles of hiding information by chaotic coders and methods of attacking these encryption systems (cryptoanalysis). After a survey of working principles and cryptographical assumptions the attention is focused on public channel chaotic coding systems where principles of the cryptographical analysis are discussed. Finally a discrete-time chaotic encryption system which has been designed on the condition of public channel and unknown coder structure is treated and two ciphertext-only, public structure attacks are performed.