Geodesic
Stable states of asynchronous generator
Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki, Tome 152 (2010) no. 1, pp. 174-180

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Asynchronous generators assembled of XOR elements with feedback are under consideration. Such generators are used for random keys production for cryptographic purposes. The goal of the research is to present an analytical procedure for detecting the presence of stable and partly stable states. If the generator is set in one of such states, it stops producing the correct keys. A mathematical model which is based on the theory of linear equations over $GF(2)$ and on the theory of matrices with non-negative elements is suggested. Some examples of implementation of the developed methods are presented.
Keywords: hardware key generator, stable states. 
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     title = {Stable states of asynchronous generator},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
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     number = {1},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZKU_2010_152_1_a16/}
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V. M. Kuznetsov; V. A. Pesoshin; E. L. Stolov. Stable states of asynchronous generator. Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki, Tome 152 (2010) no. 1, pp. 174-180. http://geodesic.mathdoc.fr/item/UZKU_2010_152_1_a16/