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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Hassanzadeh, M.M. Helleseth, T. |
| Copyright Year | 2010 |
| Abstract | The Alternating Step(r, s) Generator, ASG(r, s), is a clock-controlled sequence generator which is recently proposed by A. Kanso. It consists of three registers of length l, m and n bits. The first register controls the clocking of the two others. The two other registers are clocked r times (or not clocked) (resp. s times or not clocked) depending on the clock-control bit in the first register. The special case r = s = 1 is the original and well known Alternating Step Generator. Kanso claims there is no efficient attack against the ASG(r, s) since r and s are kept secret. In this paper, we present an Alternating Step Generator, ASG, model for the ASG(r, s) and also we present a new and efficient algebraic attack on ASG(r, s) using 3(m + n) bits of the output sequence to find the secret key with $O((m^{2}+n^{2})2^{l+1}+m^{3}2^{m−1}+n^{3}2^{n−1})$ computational complexity. We show that this system is no more secure than the original ASG, in contrast to the claim of the ASG(r, s)'s constructor. |
| Starting Page | 2493 |
| Ending Page | 2497 |
| File Size | 233602 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781424478903 |
| e-ISBN | 9781424478927 |
| e-ISBN | 9781424478910 |
| DOI | 10.1109/ISIT.2010.5513443 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-06-13 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Clocks Security Informatics Random sequences Linear feedback shift registers Computational complexity Linearity Councils Linear feedback control systems |
| Content Type | Text |
| Resource Type | Article |
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