A Survey On Reversible Data Hiding In Encrypted Images

Information Security

There is good potential for practical applications such as encrypted image authentication, content owner identification and privacy protection, reversible data hiding in encrypted image has attracted increasing attention in recent year. Data hiding is the technique by which some data is hidden into a cover media. Data hiding can be done in audio, video, image, text, and picture. we use image for data hiding especially digital images. The data may be any text related to the image such as authentication data or author information. At the receiver side it must be able to extract the hidden data and original image. A data hiding technique satisfying this requirement is known as reversible data hiding. Reversible data hiding is a type of data hiding techniques whereby the host image can be recovered exactly. Being lossless makes this technique suitable for medical, military applications and cloud storage. In cloud storage, a content owner can encrypt an image to preserve his/her privacy, and upload the encrypted data onto cloud. Reversible data hiding in encrypted image , which can recover the original image without any distortion from the marked image after the hidden data have been extracted. Now a days reversible data hiding in encrypted images is in used due to its excellent property which is original cover can be recovered with no loss after extraction of the embedded data. Also it protect the original data. Existing reversible data hiding methods in encrypted images (RDHEI) can be divided into two categories: without or with a preprocessing before image encryption.

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