A simple stream cipher with proven properties

Authors:
Wenpei Si;Cunsheng Ding
Affiliations:
Department of Computer Science and Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong;Department of Computer Science and Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
Venue:
Cryptography and Communications
Year:
2012

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Abstract

Both stream ciphers and block ciphers can be used to provide data confidentiality service. Stream ciphers are preferred in many applications, since they can destroy statistical properties of natural languages to some extent. However, it seems hard to design a stream cipher with many proven security properties. The objective of this paper is to present a binary stream cipher which is secure with respect to a number of attacks, and has reasonable performance. The advantage of the stream cipher over existing ones is that it has more proven security properties.