International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 13 Issue: 02 | Feb 2026
p-ISSN: 2395-0072
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SECURE CHAIN HIDE: BLOCKCHAIN-ENABLED AI STEGANOGRAPHY FOR MULTI-MODEL DATA Vignesh.K1, Ameeroddin.SK2, Tushith.N3, Sathvik kumar.S4 1234Department of Information Technology, TKR College of Engineering and Technology, Telangana, India
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Abstract - The rapid growth of digital communication has
confidentiality and invisibility. Before embedding, the secret data is encrypted using AES, making it unreadable even if extracted by an unauthorized user. The encrypted data is then hidden inside a cover image using LSB steganography, resulting in a stego image that appears visually identical to the original image. This project, Secure Multimedia Data Hiding Using Image Steganography and AES Encryption, provides a robust and secure framework for hiding and transmitting multimedia data over digital channels. By combining cryptographic security with steganographic techniques and implementing the system using the Django framework, the solution ensures secure user authentication, controlled access, and reliable data embedding and extraction, making it suitable for real-world applications such as secure communication, digital watermarking, and confidential data exchange.
increased the need for secure methods to protect sensitive multimedia information from unauthorized access. This project presents a secure multimedia data hiding approach that combines image steganography with Advanced Encryption Standard (AES) encryption to ensure both confidentiality and invisibility of the transmitted data. In the proposed system, secret multimedia content such as text, audio, or images is first encrypted using AES to provide strong cryptographic security. The encrypted data is then embedded into a cover image using image steganography techniques, making the presence of hidden information imperceptible to human vision. This dual-layer security model protects data even if the stego-image is intercepted, as the embedded content remains encrypted and unreadable without the correct key. Experimental results demonstrate that the method maintains high image quality, minimal distortion, and robust resistance against common steganalysis attacks. The proposed approach is suitable for secure communication in applications such as confidential data transmission, digital watermarking, and multimedia security systems.
1.1 Image Steganography for Secure Data Hiding Image steganography is a technique used to conceal secret information within a digital image in such a way that the existence of the hidden data is not noticeable to human observers. Unlike cryptography, which makes data unreadable but visible, steganography focuses on hiding the very presence of the message. In this approach, a cover image is selected and modified slightly to embed secret data while maintaining its visual quality. One of the commonly used methods is Least Significant Bit (LSB) substitution, where the least significant bits of pixel values are altered to store hidden information. Since these changes are minimal, the stego-image appears almost identical to the original image. Image steganography is widely used in secure communication, copyright protection, and covert data transmission due to its ability to provide secrecy without raising suspicion.
Key Words: Image steganography, Advanced Encryption Standard (AES), multimedia security, data hiding, secure communication, cryptography, steganalysis resistance, information security.
1. INTRODUCTION In today’s digital era, the secure transmission of sensitive information over open networks has become a critical challenge. With the rapid growth of internet-based communication, data such as personal messages, confidential documents, medical records, and multimedia files are increasingly vulnerable to unauthorized access, interception, and cyberattacks. Traditional security techniques like cryptography protect data by converting it into unreadable formats, but they often reveal the existence of secret communication, making them attractive targets for attackers. Steganography offers an additional layer of security by concealing the very existence of secret data within digital media such as images, audio, or video files. Image steganography, particularly Least Significant Bit (LSB) encoding, is widely used due to its simplicity, efficiency, and minimal impact on image quality. However, steganography alone does not guarantee complete security if the hidden data is discovered. To overcome this limitation, the proposed system integrates AES (Advanced Encryption Standard) encryption with image steganography to ensure both data
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Fig -1: Image Steganography for Secure Data Hiding
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