Enhancing Secure Communication Through Hybrid Steganography and Public Key Cryptography

Abstract

This research pioneers an innovative paradigm in secure data communication by seamlessly merging Public Key Digital Image Steganography with public key cryptography. The proposed method leverages the formidable strength of the RSA algorithm, employing a robust 1024-bit key size for secure data encryption. In parallel, the imperceptibility of the F5 steganographic technique is harnessed to clandestinely embed the encrypted message within a cover image. Unlike conventional methods, our scheme introduces matrix embedding, a technique that minimizes alterations to the message length while providing unparalleled steganographic capacity, expedited processing, and resilience against both visual and statistical attacks. The RSA algorithm, with its robust 1024-bit key size, forms the bedrock of our cryptographic framework. This asymmetric encryption technique not only facilitates secure data transmission through robust key exchange but also ensures the confidentiality of the concealed message. Simultaneously, the F5 steganographic technique is employed to achieve imperceptible embedding, seamlessly integrating the encrypted message within the cover image without compromising visual integrity. In a departure from traditional approaches, our scheme introduces matrix embedding, a novel technique that optimizes the concealment process. This innovative method minimizes changes to the message length, thereby preserving the integrity of the concealed information. The result is a system characterized by high steganographic capacity, expedited processing speed, and a robust defense against both visual and statistical attacks. The experimental validation of our proposed method encompasses a thorough assessment of steganographic capacity, processing speed, and robustness. The results not only endorse the effectiveness of the RSA-F5-matrix embedding hybrid but also underscore its practical viability. The scheme emerges as a robust solution for secure data communication, offering a delicate balance between security, efficiency, and concealment integrity.