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A Study on Appropriate S-box of DES in Radio Channel  

Park, Mi-Og (숭실대학교 컴퓨터학과)
Choi, Yeon-Hee (숭실대학교 컴퓨터학과)
Jun, Moon-Seog (숭실대학교 정보과학대학)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.29, no.1C, 2004 , pp. 18-24 More about this Journal
Abstract
Nowadays, the development of wireless communications provides a convenience for many people. On the other hand, the openness of wireless communications poses serious security threats and the security of wireless communications is necessary to support the secure communication channel. The common security method on wireless is the stream cipher that generates the pseudorandom number. In this paper, we propose the usage of the nonlinear function S-box and the mechanism according to it in stream cipher as the study to securely protect data transferred on wireless communications. Besides, it goes abreast a study on S-box with the best random characteristic among the used S-boxes on wireless communications. By means of test, we investigate the most appropriate S-box of DES on wireless communications environment and prove the efficiency of the proposed model by comparing and analysis of the randomness of the based stream cipher and the proposed model.
Keywords
stream cipher; random number; S-box;
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