Year
1993
Degree Name
Master of Science (Hons.)
Department
Department of Computer Science
Recommended Citation
Ghodosi, Hossein, Parallel generation of c[r]yptographically strong pseudo-random sequences, Master of Science (Hons.) thesis, Department of Computer Science, University of Wollongong, 1993. https://ro.uow.edu.au/theses/2809
Abstract
The operational disadvantages of perfectly secure cipher systems has led to the development of practically secure stream cipher systems. The security of such cipher systems depend on the strength of the keystream. In order to examine the strength of a sequence two different types of criteria are considered. Statistical tests, are designed to assess how a sequence with a particular property behaves randomly. Complexity measures, are applied to determine the complexity, or equivalently the unpredictability of a sequence. Sequences obtained by LFSR are considered as building blocks of pseudo-random (PR) sequence generators. Transformations on the decimal expansion of irrational numbers is an alternative method for generating PR sequences, which are studied and some encouraging results are reported.
Unless otherwise indicated, the views expressed in this thesis are those of the author and do not necessarily represent the views of the University of Wollongong.