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Authentication of Colored Document Images using Secret-Sharing Method with Repair Capability


Author(s):

Miss. Manjiri T Jagnade , Abha Gaikwad Patil College of Engineering ; Prof. Vijay Bagdi , Abha Gaikwad Patil College of Engineering

Keywords:

color document image, image authentication, Portable Network Graphics (PNG), repair image, secret sharing

Abstract:

New authentication method for colored document images using secret sharing technique with repair capability through the use of the PNG image is introduced. The input image is assumed to be any color document image as it is used for preserving confidential and sensitive information. Generate the several shares of input image using the secret sharing Scheme. The alpha channel is combined with another cover image over input image to form a PNG image shares. Here, alpha plane is used for embedding purpose. After getting embedded image, in the process of image authentication, if receiver gets all the sufficient parts which are shared with all participants then that image will be authentic image. And if, receiver collect improper shares then that image will be found unauthentic. Data repair is applied to each tampered block, if particular block of image is marked as tampered then taking parts from all the three images, and then comparing them to get the best part which matches the most and repair it. But by using cover image and alpha channel plane, original image remain untouched. So, need to repair only stego image. Good simulation results prove the effectiveness of the proposed method for real applications.


Other Details:

Manuscript Id :IJSTEV3I5126
Published in :Volume : 3, Issue : 5
Publication Date: 01/12/2016
Page(s): 216-222
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