A Hybrid Security System for Text Encryption and Steganography in Video Using Multi-Level Chaotic Maps

The swift advancement of information and communication technology has made it increasingly difficult to guarantee the security of transmitted data.Traditional encryption techniques, particularly in multimedia applications, frequently fail to defend against sophisticated attackers.By combining multi-level chaotic maps with Least Significant Bit (LSB) steganography and Advanced Encryption Standard (AES) encryption, this study proposes an improved security approach for text transmission.Multiple well-known chaotic maps integrate into the chaotic system to guarantee randomness as well as key unpredictability through the Arnold Cat Map, Ikeda Map, Tent Map, Henon Map, Gingerbread Man Map, Standard Map, and Zaslavsky Map.A hybrid chaotic system dynamically creates the encryption keys, guaranteeing high unpredictability and resistance to brute-force attacks.Next, it incorporates the encrypted text into video frames, making it challenging to find the secret data.The suggested method executes three fundamental steps, which start with chaotic system-based dynamic key genesis, followed by AES encryption enabled by the generated key, and culminating in LSB steganographic text embedding insertion.The suggested method demonstrates its resilience to statistical attacks by passing 13 out of 16 NIST randomness tests and achieving high entropy values above 7.98, along with strong Chi-Square statistics confirming uniformity of encrypted text distribution.Our hybrid approach improves data secrecy and resistance to various cryptographic attacks.The proposed system provides superior encryption capabilities together with better randomness, and withstands statistical attacks while maintaining while preserving the imperceptibility of the video content .Experimental results confirm the efficiency of the suggested technique in safely sending sensitive textual information while preserving the video content's imperceptibility.