Secret Network Communication System In Real Time Dsp Implementation

With the advanee develoPment of Intemet and wide use of digital signal Proeessing,the Proteetion ofdigital information,esPeeiallymultimediaeontentisbeeomingaerucialissue in information seeurity, In eonsideration of the inereasing values of information seeurity, issues eoneerningseeeommunieation are studied in this dissetion,and a seeret multimediaeornnunieation system 15 imPlemented as well. In the thesis,the teehniques of information Proteetion based on Chaos and DSP arefirst introdueed.Then a new eommunieation system 15 brought uP in terms of existedexPerimental outeomes.Everymodule 15 deseribed in the following ehapter. To achievethe goal of network eommunieation,TCP/IP Protocols are sueeessfully imPlemented inthis DSP system.Any UDP data ean be transformed from DSP and PC,or between DSPs.In the algorithms,two sehemes are seleeted.A ehaotic stream eiPher taking use ofehaotiefeedbaek shift registers,15 used as an audio eneryPtion algorithm.Another 15 a novelimage eneryPtion seheme based on threedimensional Baker map.With the analyzing ofthe feasibility and Performanee,such as oPeration sPeed,the eorresPonding adjustmeni 15also aPrlied. Finally, the dissertation 15 eoneluded by Pointing out some oPen issues on this seeretcommunieation system,as well as highlight some further imProvement direetions.