A Highly Nonlinear Cellular FSM-Combiner for Stream Ciphers

摘要

Combiner construction is an important problem in the design of random generators for applications in stream ciphering. Most constructions use the concept of static combiners based on boolean functions. In this paper we propose the construction of a dynamic combiner which is based on a cellular array of finite state machines which realize a switching network for a XOR combiner with variable length.