Using Chaotic Stream Cipher to Enhance Data Hiding in Digital Images

TL;DR

This paper introduces a combined cryptography and steganography system using chaotic stream cipher to securely hide messages in digital images, enhancing confidentiality and reducing distortion.

Contribution

It presents a novel method integrating chaotic stream cipher encryption with steganography for secure message hiding in images, utilizing shared secret keys for improved confidentiality.

Findings

Encrypted messages are securely hidden with minimal image distortion.

Unauthorized keys produce different messages, ensuring confidentiality.

The system effectively combines encryption and steganography for secure data transmission.

Abstract

The growing potential of modern communications needs the use of secure means to protect information from unauthorized access and use during transmission. In general, encryption a message using cryptography techniques and then hidden a message with a steganography methods provides an additional layer of protection. Furthermore, using these combination reduces the chance of finding the hidden message. This paper proposed a system which combines schemes of cryptography with steganography for hiding secret messages and to add more complexity for steganography. The proposed system secret message encoded with chaotic stream cipher and afterwards the encoded data is hidden behind an RGB or Gray cover image by modifying the kth least significant bits (k-LSB) of cover image pixels. The resultant stego-image less distorters. After which can be used by the recipient to extract that bit-plane of the image. In fact, the schemes of encryption/decryption and embedding/ extracting in the proposed system depends upon two shred secret keys between the sender and the receiver. An experiment shows that using an unauthorized secret keys between the sender and the receiver have totally different messages from the original ones which improve the confidentiality of the images.