An Efficient Algorithm for Reversible Data Hiding in Encrypted Images by RRBE
Revathi Nath H A1, Jeena R S2

1Revathi Nath H A, M.Tech. Student, Department of Electronics and Communication, College of Engineering Trivandrum (Kerala) India.
2Jeena R S, Assistant Professor, Department of Electronics and Communication Engineering at College of Engineering Trivandrum, (Kerala) India.

Manuscript received on 10 December 2016 | Revised Manuscript received on 18 December 2016 | Manuscript Published on 30 December 2016 | PP: 74-78 | Volume-6 Issue-2, December 2016 | Retrieval Number: B4799126216/16©BEIESP
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Abstract: Recently reversible data hiding in encrypted images is gaining importance as this technique of watermarking can reconstruct the original image after extracting the desired data hidden in the image. In all the previous works, room was reserved for data in the image and the image would be encrypted using a standard stream cipher. This work proposes a technique for reversible data hiding in encrypted images where the data to be hidden is encrypted using Advanced Encryption Standard (AES) that can improve the PSNR. Also the encrypted image holding data would be permuted and transmitted, that can increase the level of security. Experimental results show that this method can achieve a PSNR of more than 60db thereby increasing the embedding rate.
Keywords: Advanced Encryption Standard, Block Merging, Image Ppermutation, Reserving Room before encryption

Scope of the Article: Image Processing