Secret sharing mechanism with cheater detection

Cheater detection is essential for a secret sharing approach which allows the involved participants to detect cheaters during the secret retrieval process. In this article, we propose a verifiable secret sharing mechanism that can not only resist dishonest participants but can also satisfy the requirements of larger secret payload and camouflage. The new approach conceals the shadows into a pixel pair of the cover image based on the adaptive pixel pair matching. Consequently, the embedding alteration can be reduced to preserve the fidelity of the shadow image. The experimental results exhibit that the proposed scheme can share a large secret capacity and retain superior quality.