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ISSN: 2321-9939 | ESTD Year: 2013

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Paper Title
Reversible Data Hiding For Privacy Preservation in Cloud Data Management
  Shruti R. Joshi

Encryption is an effective and popular way of converting the original and meaningful content to the cipher form. There is numerous works on data hiding in the encryption field in which reversible data hiding scheme is investigated. Due to reversible property, the original digital content can be completely regained. Reversible data hiding (RDH) with encrypted images is a system by which the original image can be recovered without loss after the embedded message is extracted. RDH for encrypted images by Vacating Room after Encryption (VRAE) is already available, which hides the data by reversibly vacating space from the encrypted images. This existing system has many drawbacks like small payloads embedment, degraded performance in image restoration measured under the standard parameter of PSNR (Peak Signal to Noise Ratio). The proposed method, Reserving Room before Encryption (RRBE) with RDH algorithm for embedment and blowfish algorithm for encryption improves the quality of image restoration and enhances the payload embedding capacity. In the proposed method, content owner uploads the cover image and text to be embedded into it on the cloud space. The RRBE on cloud first reserves enough space by vacating room for embedding data. Next, it converts the image into its encrypted form with the help of encryption key. Then the secret data taken as input is embedded into the space from image on cloud. The encrypted image with secret data is stored in cloud platform. The legitimate receiver then extracts secret data and original image by decryption with preserving privacy and lossless image restoration. The RRBE method applied in cloud data management will satisfy the privacy preserving need of cloud environment efficiently. In this case, PaaS (Platform as a Service) model of a cloud technology is implemented. Also, blowfish algorithm provides strong encryption than simple stream cipher in the existing systems.

Keywords- Reversible Data Hiding, Image Encryption, Privacy preservation, Cloud data.
Publication Details
Unique Identification Number - IJEDR1503001
Page Number(s) - 1-6
Pubished in - Volume 3 | Issue 3 | July 2015
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)
Cite this Article
  Shruti R. Joshi,   "Reversible Data Hiding For Privacy Preservation in Cloud Data Management", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.3, Issue 3, pp.1-6, July 2015, Available at :http://www.ijedr.org/papers/IJEDR1503001.pdf
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