ZUC STREAM CIPHER USING FEEDBACK CARRY SHIFT REGISTER

摘要

This paper addresses the usage of FCSR in place of LFSR in a stream cipher. To demonstrate the usage ZUC stream cipher is taken as example in this paper. A good stream cipher should have good randomness, high period, linear span, and security against any known attack. FCSRs provide greater non-linearity than LFSRs.