Summary

International Symposium on Nonlinear Theory and its Applications

2008

Session Number:B3L-E

Session:

Number:B3L-E4

Chaotic Map with Parameter Changing Shape of the Map for a Cryptosystem

Shuichi AONO,  Yoshifumi NISHIO,  

pp.-

Publication Date:2008/9/7

Online ISSN:2188-5079

DOI:10.34385/proc.42.B3L-E4

PDF download (180.1KB)

Summary:
A chaotic map has sensitivity to changes in the initial conditions and parameters, and a long-term forecast becomes impossible by iterating a chaotic map. These features look similar to the features of cryptology. For this reason, it is effective to use chaotic maps for cryptosystems. In this research, we propose a chaotic map with parameter changing the shape of the map. And we propose a cryptosystem using a chaotic map. A characteristic of the proposed cryptosystem is that different ciphertexts are generated from the same plaintext. The ciphertext depends on the private key of the encryptor. This cryptosystem is a symmetric-key cryptography that has an advantage of public-key cryptography. We investigate the vulnerability of this cryptosystem.