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The Switching Generator: New Clock-Controlled Generator with Resistance against the Algebraic and Side Channel Attacks

Authors
Choi, JunMoon, DukjaeHong, SeokhieSung, Jaechul
Issue Date
6월-2015
Publisher
MDPI AG
Keywords
clock-controlled generator; algebraic attack; side channel attack; switching generator; period and linear complexity
Citation
ENTROPY, v.17, no.6, pp.3692 - 3709
Indexed
SCIE
SCOPUS
Journal Title
ENTROPY
Volume
17
Number
6
Start Page
3692
End Page
3709
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/93477
DOI
10.3390/e17063692
ISSN
1099-4300
Abstract
Since Advanced Encryption Standard (AES) in stream modes, such as counter (CTR), output feedback (OFB) and cipher feedback (CFB), can meet most industrial requirements, the range of applications for dedicated stream ciphers is decreasing. There are many attack results using algebraic properties and side channel information against stream ciphers for hardware applications. Al-Hinai et al. presented an algebraic attack approach to a family of irregularly clock-controlled linear feedback shift register systems: the stop and go generator, self-decimated generator and alternating step generator. Other clock-controlled systems, such as shrinking and cascade generators, are indeed vulnerable against side channel attacks. To overcome these threats, new clock-controlled systems were presented, e.g., the generalized alternating step generator, cascade jump-controlled generator and mutual clock-controlled generator. However, the algebraic attack could be applied directly on these new systems. In this paper, we propose a new clock-controlled generator: the switching generator, which has resistance to algebraic and side channel attacks. This generator also preserves both security properties and the efficiency of existing clock-controlled generators.
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