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2013•Unpublished venueRequires access

On selection of optimal parameters for the WG stream cipher family

Kalikinkar Mandal, Guang Gong, Xinxin Fan, Mark D. Aagaard

Open publisher page 6 citations

Abstract

In this paper, we first present some new results about the Welch-Gong (WG) transformations, followed by a description of the WG stream cipher family which is built upon an LFSR and a WG transformation over an extension field. The randomness properties of keystreams produced by a decimated WG cipher are derived based on the new results. We also discuss the selection criteria for choosing the optimal parameters for a WG cipher in order to achieve the maximum level of security. Finally, we present the optimal parameters for the WG transformations over F2m, 7 ≤ m ≤ 16 based on the proposed criteria.

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What this paper is about

In this paper, we first present some new results about the Welch-Gong (WG) transformations, followed by a description of the WG stream cipher family which is built upon an LFSR and a WG transformation over an extension field. The randomness properties of keystreams produced by a decimated WG cipher are derived based on the new results. We also discuss the selection criteria for choosing the optimal parameters for a WG cipher in order to achieve the maximum level of security. Finally, we present the optimal parameters for the WG transformations over F2m, 7 ≤ m ≤ 16 based on the proposed criteria.

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OpenAlex reports 6 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

In this paper, we first present some new results about the Welch-Gong (WG) transformations, followed by a description of the WG stream cipher family which is built upon an LFSR and a WG transformation over an extension field. The randomness properties of keystreams produced by a decimated WG cipher are derived based on the new results. We also discuss the selection criteria for choosing the optimal parameters for a WG cipher in order to achieve the maximum level of security. Finally, we present the optimal parameters for the WG transformations over F2m, 7 ≤ m ≤ 16 based on the proposed criteria.

Key concepts: Stream cipher, Selection (genetic algorithm), Cipher, Randomness, Transformation (genetics), Extension (predicate logic), Computer science, Cryptography

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