Applicability of simple power analysis to stream ciphers constructed using multiple LFSRs

In recent years, the hardware implementation of stream ciphers has attracted the interest of many designers, mainly due to their low implementation area on a chip. However, to date, in comparison with block ciphers, side channel attacks have not been extensively analyzed for their applicability to s...

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Bibliographic Details
Published in2012 25th IEEE Canadian Conference on Electrical and Computer Engineering (CCECE) pp. 1 - 6
Main Authors Zadeh, A. A., Heys, H. M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2012
Subjects
Clocks
Equations
Hardware
LILI-128
Power demand
Registers
Simple Power Analysis
Stream cipher
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ISBN1467314315
9781467314312
ISSN0840-7789
DOI10.1109/CCECE.2012.6334887

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Summary:In recent years, the hardware implementation of stream ciphers has attracted the interest of many designers, mainly due to their low implementation area on a chip. However, to date, in comparison with block ciphers, side channel attacks have not been extensively analyzed for their applicability to stream cipher hardware implementations. However it has been shown that simple power analysis (SPA) attacks are applicable to stream ciphers based on one linear feedback shift register. In this paper, we extend the SPA method to stream ciphers with multiple linear feedback shift registers and multiple linear feedback shift registers with irregular clocking. Then we apply the proposed method to the well-known stream ciphers E0 and LILI-128.
ISBN:1467314315
9781467314312
ISSN:0840-7789
DOI:10.1109/CCECE.2012.6334887