Secret Image Sharing Using Shamir Secret Rule

Abstract - As digital communication expands, the security of concealed messages in images without damaging their visual perception has become a mandatory necessity in data security. This paper introduces a new method that couples Shamir's Secret Sharing Scheme (SSSS) with steganography to protect sensitive data inside digital images securely. In contrast to traditional techniques that distort the image or introduce evidence of manipulation, our technique guarantees that the original image is visually unchanged following embedding. The covert message is split into several encrypted shares through polynomial interpolation before being hidden in the cover image via Least Significant Bit (LSB) steganography, preserving image integrity while protecting the concealed information. [9][13]. The reconstruction of the secret message is achievable only when a predetermined number of shares are combined, providing more security against unauthorized access and partial compromise. This two-layered approach provides data confidentiality, concealment, and visual integrity and is well applicable for real-world use cases such as secure communication, digital forensics, and personal data protection.[8][16]. Key Words: Steganography, Shamir’s Secret Sharing Scheme, LSB Encoding, Secret Message Embedding, Image Integrity, Data Confidentiality, Visual Cryptography, Secure Communication .