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Nowadays the telecommunications industry focuses on two user requirements: increased data-rates at high speed mobility and robust network security. The emerging technology for these milestones is the 3GPP Long Term Evolution standard and the LTE-Advanced improvement of this standard. The paper describes the main features of these modern networks and conducts an analysis on the LTE EPS-AKA proposing...
There are more than eleven years since Rijndael algorithm was declared the winner of the NIST contest for the new AES election. All this time the original algorithm was analyzed and attacked by cryptanalysts and hackers in order to find its vulnerabilities. The modified version of Rijndael we analyze in this paper randomly changes the accessing order of S-Boxes implemented in the source code of the...
In the recent years, watermarking algorithms were designed based on different dynamical chaotic systems. In this paper we propose some ideas to improve the performances of this kind of techniques using the PWLCM, the DCT and luminance transformation of the image in order to hide the watermark information in an invisible and robust way.
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