Cryptanalysis of a new chaotic cryptosystem based on ergodicity

TL;DR

This paper critically examines a new chaotic cryptosystem, revealing vulnerabilities through chosen-ciphertext attacks and exposing design weaknesses related to its ergodic properties.

Contribution

It provides the first cryptanalysis of a recent ergodic chaos-based cryptosystem, highlighting security flaws and attack strategies.

Findings

Secret key can be obtained via chosen-ciphertext attack

Design weaknesses compromise cryptosystem security

Ergodicity-based design does not guarantee security

Abstract

This paper analyzes the security of a recent cryptosystem based on the ergodicity property of chaotic maps. It is shown how to obtain the secret key using a chosen-ciphertext attack. Some other design weaknesses are also shown.