Hybrid Content Security Model Using Steganography and Cryptography in Cloud Storage

Abstract

This paper presents a hybrid security model for safeguarding cloud storage content by integrating cryptography and steganography. In the proposed approach, sensitive data is first encrypted using robust algorithms such as AES or RSA, rendering it unreadable to unauthorized users. The resulting ciphertext is then embedded within a benign-looking image using Least Significant Bit (LSB) steganography. To cloud storage providers ( AWS, Google Cloud), the data appears as ordinary images rather than conspicuous ciphertext, thereby reducing the likelihood of targeted attacks. This dual-layer approach leverages the strengths of both techniques—encryption ensures the confidentiality of the content, while steganography conceals the very existence of the protected data. The workflow is systematically outlined, demonstrating how layered security significantly increases the computational effort required for a successful breach. Recommended technologies include AES and RSA encryption algorithms, LSB-based image steganography for data concealment, and widely adopted cloud platforms with native encryption support. The model’s strengths are enhanced security, covert transmission—and its limitations are processing overhead, dependency on cover media. These strengths and limitations are analyzed to provide a balanced perspective on its practical application.