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Modifications of stream cipher RC4

Zelenoritskaya A.   (National Research Nuclear University "MEPI")

Ivanov M.   (Gubkin Russian State University of Oil and Gas (National Research University))

In this paper, we consider possible modifications of the stream cipher RC4, which became widespread due to its properties, such as elegant design and an effective software and hardware implementation. We present an enhancement version of the RC4 algorithm, which obtained by adding parallel LFSR and stochastic transformation boxes (R-boxes). The result of proposed modification is the increased complexity of dependence between the key and the initial state of the cipher, as well as increased bit depth of the internal state.

Keywords:Stream cipher, RC4, Spritz, LFSR, R-box.
 

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Citation link:
Zelenoritskaya A. , Ivanov M. Modifications of stream cipher RC4 // Современная наука: актуальные проблемы теории и практики. Серия: Естественные и Технические Науки. -2019. -№03-2. -С. 56-61
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