This paper discusses the cryptographic requirements for chaotic secure communications. It highlights the lack of proper key management and security analysis in many chaotic cryptosystems, which makes them difficult to implement securely and evaluate their performance. The authors propose a set of guidelines to help new cryptosystems be presented in a more rigorous cryptographic way. These guidelines address key management, security analysis, and practical aspects of communications such as implementation, channel noise, limited bandwidth, and attenuation. The paper outlines the two main approaches to chaotic cipher design: analog and digital. Analog systems rely on chaotic synchronization, while digital systems use chaotic maps. The key is a fundamental aspect of any cryptosystem, and its definition, space, and generation are crucial for security. The key space must be thoroughly specified, and the key generation process should be clearly defined to avoid weak or degenerated keys. Security analysis is essential to evaluate the robustness of a cryptosystem against various attacks, including known plaintext, chosen plaintext, and chaos-specific attacks. The paper also emphasizes the importance of a large key space to resist brute force attacks, with a recommended size of $ r > 2^{100} $. Additionally, the system should be tested under real channel conditions, considering noise, limited bandwidth, and signal attenuation. The paper concludes that following these guidelines will help ensure the security and cryptographic rigor of new chaos-based cryptosystems, making them more acceptable to the cryptography community.This paper discusses the cryptographic requirements for chaotic secure communications. It highlights the lack of proper key management and security analysis in many chaotic cryptosystems, which makes them difficult to implement securely and evaluate their performance. The authors propose a set of guidelines to help new cryptosystems be presented in a more rigorous cryptographic way. These guidelines address key management, security analysis, and practical aspects of communications such as implementation, channel noise, limited bandwidth, and attenuation. The paper outlines the two main approaches to chaotic cipher design: analog and digital. Analog systems rely on chaotic synchronization, while digital systems use chaotic maps. The key is a fundamental aspect of any cryptosystem, and its definition, space, and generation are crucial for security. The key space must be thoroughly specified, and the key generation process should be clearly defined to avoid weak or degenerated keys. Security analysis is essential to evaluate the robustness of a cryptosystem against various attacks, including known plaintext, chosen plaintext, and chaos-specific attacks. The paper also emphasizes the importance of a large key space to resist brute force attacks, with a recommended size of $ r > 2^{100} $. Additionally, the system should be tested under real channel conditions, considering noise, limited bandwidth, and signal attenuation. The paper concludes that following these guidelines will help ensure the security and cryptographic rigor of new chaos-based cryptosystems, making them more acceptable to the cryptography community.