SOME BASIC CRYPTOGRAPHIC REQUIREMENTS FOR CHAOS-BASED CRYPTOSYSTEMS

TLDR

Chaos‑based cryptosystems have proliferated, yet most lack essential features, robust implementation guidance, and thorough security analysis, making practical deployment and evaluation difficult. This paper proposes a common framework of basic guidelines to help designers create more systematic and rigorous chaos‑based cryptosystems. The guidelines cover implementation, key management, and security analysis, and include practical recommendations on channel noise, bandwidth limits, and attenuation for analog chaos‑based secure communications.

Abstract

In recent years, a large amount of work on chaos-based cryptosystems have been published. However, many of the proposed schemes fail to explain or do not possess a number of features that are fundamentally important to all kind of cryptosystems. As a result, many proposed systems are difficult to implement in practice with a reasonable degree of security. Likewise, they are seldom accompanied by a thorough security analysis. Consequently, it is difficult for other researchers and end users to evaluate their security and performance. This work is intended to provide a common framework of basic guidelines that, if followed, could benefit every new cryptosystem. The suggested guidelines address three main issues: implementation, key management and security analysis, aiming at assisting designers of new cryptosystems to present their work in a more systematic and rigorous way to fulfill some basic cryptographic requirements. Meanwhile, several recommendations are made regarding some practical aspects of analog chaos-based secure communications, such as channel noise, limited bandwith and attenuation.