Secret digital images over cloud computing using meaningful secret sharing technique

Cloud computing offers enormous benefits of shared resources to its users, especially for image space to store up personal digital images/photos. But, it also faces with some problems about security and privacy concerns. In order to enhance image security and privacy over cloud computing environment, we put forward an algorithm by using secret sharing technique to camouflage the existence of confidential images. The proposed scheme first decomposes a secret RGB color image and transforms it into Y, Cb, Cr channels. Then, several cover images are chosen and used to create meaningful shares. Experimental results show that the proposed scheme can yield satisfactory qualities for the meaningful shares and the reconstructed images. Moreover, the proposed scheme has the advantages of simple computation and image privacy.