Chaos-based cryptography is discussed in this brief article, focusing on its relationship with cryptography and chaos theory. The author highlights that while chaos-based cryptographic algorithms are often weak and slow, they lack rigorous cryptographic analysis. The paper emphasizes the need for better understanding of the relationship between chaos and cryptography, as well as the importance of security and performance in cryptographic algorithms. It also discusses the differences between chaotic systems and cryptographic algorithms, noting that chaotic systems operate on real numbers while cryptographic algorithms work on finite sets. The paper also explores the concept of chaos from an information-theory perspective, discussing the unpredictability of chaotic systems and their potential for cryptographic applications. It concludes by emphasizing the need for further research in chaos-based cryptography to improve its security and performance.Chaos-based cryptography is discussed in this brief article, focusing on its relationship with cryptography and chaos theory. The author highlights that while chaos-based cryptographic algorithms are often weak and slow, they lack rigorous cryptographic analysis. The paper emphasizes the need for better understanding of the relationship between chaos and cryptography, as well as the importance of security and performance in cryptographic algorithms. It also discusses the differences between chaotic systems and cryptographic algorithms, noting that chaotic systems operate on real numbers while cryptographic algorithms work on finite sets. The paper also explores the concept of chaos from an information-theory perspective, discussing the unpredictability of chaotic systems and their potential for cryptographic applications. It concludes by emphasizing the need for further research in chaos-based cryptography to improve its security and performance.