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http://dx.doi.org/10.5762/KAIS.2015.16.7.4912

A Study on the Image Tamper Detection using Digital Signature  

Woo, Chan-Il (Dept. of Information and Communication Engineering, Seoil University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.16, no.7, 2015 , pp. 4912-4917 More about this Journal
Abstract
Fragile watermarking is a technique to insert a watermark into an image without significantly degrading its visual quality so that the watermark can be extracted for the purposes of authentication or integrity verification. And the watermark for authentication and integrity verification should be erased easily when the image is changed by filtering etc. In this paper, we propose a image block-wise watermarking method for image tamper proofing using digital signature. In the proposed method, a digital signature is generated from the hash code of the initialized image block. And The proposed method is able to detect the tampered parts of the image without testing the entire block of the watermarked image.
Keywords
Digital Signature; Encryption; Image Authentication; Tamper Detection;
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