Description

Reversible data hiding is a type of data hiding techniques whereby the host image can be recovered exactly. Data hiding are a group of techniques used to put a secure data in a host media (like images) with small deterioration in host and the means to extract the secure data afterwards. Reversible data hiding, in which the stago-media can be reversed to the original cover media exactly, has attracted increasing interests from the data hiding community. In some cases, the content owner may not trust the service supplier, and needs to encrypt the data before uploading. Thus, the service provider must be able to do the processing in the encrypted domain. A novel reversible data hiding can recover the original image without any distortion from the marked image after the hidden data. In this project this system proposes a novel scheme of reversible data hiding (RDH) in encrypted images using distributed source coding (DSC). Existing RDH method for encrypted images in which the data-hider divides the encrypted image into blocks and embeds one bit into each block by flipping three least significant bits (LSB) of half the pixels in the block. On the receiver side data has loss when data retrieve from encrypted image. To enhance embedding payload in encrypted images and to extract the hidden data completely and to reconstruct the original image and User Original data.