Reversible Encrypted Data Concealment In Encrypted Images By Reserving Room For Data Protection
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2015, Vol 3, Issue 11
Abstract
This paper proposes a novel scheme for separate reversible data hiding in encrypted images. In the first phase, a content owner encrypts using an encryption key the original image. Then, a data-hider may compress the least significant bits of the encrypted image using a data-hiding key to create a sparse space to accommodate some additional data. With an encrypted image containing additional data, if a receiver has the data-hiding key, he can extract the additional data though he does not know the image content. If the receiver has the encryption key, he can decrypt the received data to obtain an image similar to the original one, but cannot extract the additional data. If the receiver has both the data-hiding and the encryption key, he can extract the additional data and recover the original content without any error by exploiting the spatial correlation in natural image when the amount of additional data is not too large.
Authors and Affiliations
Bhagyashri S. Jatte, Asst. Prof. A. S. Deshpande
Keywords
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