Date of Publication :15th June 2017

Abstract: The advancement of cloud or distributed computing and a drastic increment in the size of the digital images are reasons to outsource the image into the cloud. Despite of the fact that this outsourcing has many advantages, guaranteeing data confidentiality and the security in the cloud is one of the fundamental concerns. The encryption schemes for images guarantee the confidentiality in the cloud, but this scheme doesn’t permit cloud data centers to perform operations over encrypted images. In this paper, this problem is addressed by proposing a modified Pailier cryptosystem based image scaling and cropping scheme for multiclient settings to scale and crop an image in the encrypted domain on cloud data centers.

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