Lossless Secret Image Sharing Schemes
This work addresses confidentiality and availability for private medical and military image data, but it is incremental as it builds on existing secret sharing concepts with specific parameter improvements.
The paper tackles the problem of securely splitting confidential images into shares for transmission and storage, proposing efficient (2,2) and (2,3) lossless secret image sharing schemes with share sizes equal to the secret size, using simple modular arithmetic.
Secret image sharing deals with splitting confidential images into several shares and the original image can be reconstructed from the qualified subset of the shares. Secret sharing schemes are used in transmission and storage of private medical images and military secrets. Increased confidentiality and availability are the major achievements. We propose an efficient (2, 2) scheme and (2, 3) scheme for secret image sharing. The scheme is lossless and also the share size is same as the secret size. The sharing and revealing phase uses simple modular arithmetic which can be very easily implemented. Experimental results on Binary and Gray scale images show that the proposed scheme is secure and efficient.