A study of Algebraic Attack and proposed developed clock
control stream cipher
Dr.Eng Sattar B. Sadkhan Rafeef M. Hamza
University of Babylon
Computer science department
Abstract
Stream cipher is one of the efficient cryptographic primitives to provide
confidentiality of electronically transmitted data. Where it is widely used in
practice (e.g., in mobile phones, internet ). Researches are interested with
different types of attacking on stream ciphers. This paper provide
classification for types of attacks on stream cipher and concentrate on the
algebraic attack, since it represent the most important among them. Also the
paper presents proposed developed clock control keystream generator based
on combiner, that has an increase in the complexity of the structure. The
Algebraic cryptanalysis was applied for comparing the resistant of proposed
generator with LILI keystream generator.