Extending boolean operations-based secret image sharing to compartmented access structure

The methods for sharing a secret image using Boolean operations are good candidates for Visual Secret Sharing (VSS) as limiting pixel expansion and the reconstruction process computational complexity in VSS schemes. The existing Boolean operations-based secret image sharing (SIS) schemes can only handle the sharing of a secret for (k, n)-threshold and general access structure. This paper extends the Boolean operations-based SIS scheme for Compartmented access structure. Two construction techniques are proposed to realize the sharing of a secret image into Compartmented access structure. The proposed scheme benefits by having wide applicability with better visual quality of the reconstructed secret and without involving complex computation in the reconstruction process. Formal proofs and experimental results are given to validate the correctness, security and performance of the proposed scheme.