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An Efficient Stream Cipher Alpha1 for Mobile and Wireless Devices

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Publication date2001
Host publicationCryptography and Coding: 8th IMA International Conference Cirencester, UK, December 17–19, 2001 Proceedings
EditorsBahram Honary
Place of PublicationBerlin
PublisherSpringer
Pages294-300
Number of pages7
ISBN (electronic)978-3-540-45325-3
ISBN (print)3-540-43026-1, 978-3-540-43026-1
<mark>Original language</mark>English

Publication series

NameLecture Notes in Computer Science
PublisherSpringer
Volume2260
ISSN (Print)0302-9743

Abstract

Encryption in wireless networks is essential to protect sensitive information and to prevent fraud. Furthermore, wireless devices, such as palmtops, bluetooth devices, and mobiles phones require an efficient encryption algorithm which is secure and small, fast and simple to implement. There are several stream ciphers available with the best known being A5/1 used in GSM and RC4 used in 802.11 standards. However, these stream ciphers are weak against cryptographic attacks [1] [2] [3] [4] [5] [6]. In this paper, a new synchronous stream cipher (Alpha1) is proposed. Alpha1 is robust against these attacks, small, fast and very simple to implement in small wireless devices with low processing power and size (i.e. bluetooth, mobile phones, access points etc.).