IJERT-EMS
IJERT-EMS

Protection of Images by Combination of Vernam Stream Cipher and S.V.D Watermarking


Protection of Images by Combination of Vernam Stream Cipher and S.V.D Watermarking
Authors : Ralaivao Harinaivo Hajasoa , Raminoson Tsiriniaina , Randriamitantsoa Paul Auguste
Publication Date: 28-06-2017

Authors

Author(s):  Ralaivao Harinaivo Hajasoa , Raminoson Tsiriniaina , Randriamitantsoa Paul Auguste

Published in:   International Journal of Engineering Research & Technology

License:  This work is licensed under a Creative Commons Attribution 4.0 International License.

Website: www.ijert.org

Volume/Issue:   Volume. 6 - Issue. 06 , June - 2017

e-ISSN:   2278-0181

Abstract

In this article, we propose a hybrid scheme for encryption and watermarking. It reflects to the study of a new method to make sure and safe the transfer of digital images. It combines two methods namely, Vernam stream cipher method and Singular Value Decomposition (S.V.D)-watermarking. Encryption and watermarking are complementary lines of defense in protecting multimedia content. Before transmission, the original image is encrypted with the mask obtained after applying the generator pseudo-random number to the secret user key. The watermark which represents the secret key in image format is then embedded into the multimedia content. During the insertion process, a public key and a private key are used within the asymmetric cipher method in order to protect the watermarking key. In order to strengthen the protection, RSA is called for securing the watermarking key. Then, the watermarked encrypted image can be conveyed within the public channel which is not secured. Each receiver can decrypt the stream after reconstructing the same key, and extract the watermark from the image.

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