Cryptanalysis of a family of self-synchronizing chaotic stream ciphers

TL;DR

This paper analyzes a chaotic stream cipher based on unimodal maps, revealing significant security vulnerabilities through a detailed cryptanalysis of its keystream.

Contribution

It provides the first thorough cryptanalysis of a chaotic stream cipher using logistic and tent maps, exposing critical security flaws.

Findings

Keystreams are predictable due to map properties

Security vulnerabilities compromise cipher effectiveness

Highlights need for rigorous analysis in chaos-based cryptography

Abstract

Unimodal maps have been broadly used as a base of new encryption strategies. Recently, a stream cipher has been proposed in the literature, whose keystream is basically a symbolic sequence of the (one-parameter) logistic map or of the tent map. In the present work a thorough analysis of the keystream is made which reveals the existence of some serious security problems