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A New Stream Cipher Using Two Nonlinear Functions

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Book cover Computational Science and Its Applications – ICCSA 2005 (ICCSA 2005)

Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 3481))

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Abstract

The most widely used digital mobile standards are GSM(Global System for Mobile Communications) and CDMA(Code Division Multiple Access). These systems use data encryption prior to data transference, but these stream ciphers used by data encryption are unsecured. In this paper, in order to protect more securely a data, we propose a new stream cipher based on the summation generator. The proposed algorithm uses four linear feedback shift registers as an input and takes the property of several keystream cycle sequences by usage more than two nonlinear functions, that is, an S-box and a nonlinear combining function. This property makes the proposed algorithm more secure against attack such as correlation attack.

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© 2005 Springer-Verlag Berlin Heidelberg

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Park, MO., Park, DW. (2005). A New Stream Cipher Using Two Nonlinear Functions. In: Gervasi, O., et al. Computational Science and Its Applications – ICCSA 2005. ICCSA 2005. Lecture Notes in Computer Science, vol 3481. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11424826_25

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  • DOI: https://doi.org/10.1007/11424826_25

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-25861-2

  • Online ISBN: 978-3-540-32044-9

  • eBook Packages: Computer ScienceComputer Science (R0)

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