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Plenary Lecture

Authentication of Images via Noisy Channels

Professor Nataša Živić
University of Siegen
Institute for Data Communications Systems
Germany
E-mail: natasa.zivic@uni-siegen.de

Abstract: Authentication of the origin of images cannot be supported when noisy channels are used for transmission, because Message Authentication Codes are very sensitive to any modification during transmission. The modification of one single bit only is sufficient to make that the verification fails. It would be acceptable for many applications, if a modification of only a few bits would be acceptable for a successful verification.
The subject of this talk is how to provide data integrity and authentication of origin of images protected with Message Authentication Codes, if they are transmitted via noisy channels. The approach for the solution is based on the usage of Soft Values of the channel (SISO-, Soft Input – Soft Output-) decoder and Soft Input Soft Verification techniques, which have been recently developed and successfully applied for data transmission. A new method of verification of Message Authentication Codes will be used here, resulting in the same Message Authentication Codes for images, which are only a little bit different before or after source coding.

Brief Biography of the Speaker: Dr.-Ing. Natasa Zivic was born in Belgrad, Serbia. She graduated from the Faculty of Electrical Engineering at the Department of Electronics, Telecommunications and Automatics, University of Belgrade in 1999 and defended her Master Thesis in 2002. She started her PhD Thesis at the Institute for Data Communication Systems, University of Siegen, Germany in 2004 and defended it in 2007. Since 2007 she is employed as a Professor Assistant at the University of Siegen where she works on her Postdoctoral thesis and gives lectures in Communication Technologies and Basics of Telecommunications. Her main research area is combination of channel coding and cryptography. She takes part at many international conferences and journals, as well as a paper reviewer. She is an author of about 90 conference and journal papers and 3 patents.

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