Title :
Design of block ciphers by simple chaotic functions
Author_Institution :
Kainan Univ., Taoyuan
fDate :
5/1/2008 12:00:00 AM
Abstract :
The relationships of chaotic functions and cryptography are investigated in this paper. 128-bit symmetric keys are derived from some chaotic function, called simple logistic function (SLF), for suitable parameters. An improved algorithm of discretization of SLF is introduced and applied to the design of block encryption ciphers and key schedules with proper parameters and initial values. These are chosen by the Lyapunov exponent method for testing chaos. Dynamic S- Boxes of such block ciphers are generated. Security analysis is also given to these S-Boxes.
Keywords :
Lyapunov methods; cryptography; Lyapunov exponent method; block encryption ciphers; chaotic functions; cryptography; dynamic S-boxes; simple logistic function; Algorithm design and analysis; Authentication; Chaos; Chaotic communication; Cryptography; Information security; Logistics; Random number generation; Robustness; Silicon carbide;
Journal_Title :
Computational Intelligence Magazine, IEEE
DOI :
10.1109/MCI.2008.919074
