WebNonlinear feedback shift registers (NFSRs) are widely used as building blocks in the design of stream ciphers. Let NFSR(f) be an NFSR with the characteristic function f and let G(f) be the set of output sequences of NFSR(f). For a given NFSR(f), if there exists an affine Boolean function l such that G(l) ⊆ G(f), then G(l) is called an affine sub-family of … Web15 de jul. de 2012 · This paper studies affine cases, that is, finding an affine function f such that S ( f) is a subset of S ( g ). If S ( g) contains an affine sub-family S ( f) whose order n is close to m, then a large number of sequences generated by the NFSR ( g) have low linear complexities. First, we give two methods to bound the maximal order of affine sub ...
On the largest affine sub-families of a family of NFSR sequences
WebIf S(g) contains an affine sub-family S(f) whose order n is close to m, then a large number of sequences generated by the NFSR (g) have low linear complexities. First, we give two … WebSearch within Tian's work. Search Search. Home Tian hillary 2016 mug
On the Cycle Structure of Some Nonlinear Shift Register Sequences
Web13 de dez. de 2013 · Grain is one of eSTREAM hardware-oriented finalists. It uses a 160-bit NFSR as a primitive which is a cascade connection of an 80-bit LFSR into an 80-bit NFSR. In this paper, we study affine sub-families of the family of output sequences of this 160-bit NFSR and prove that it includes no affine sub-families of order greater than 31 or less … WebZhang JM Tian T Qi WF Zheng QX A new method for finding affine sub-families of NFSR sequences IEEE Trans. Inf. Theory 2024 65 2 1249 1257 3904946 10.1109/TIT.2024.2858769 Google Scholar Digital Library; 27. Zhao XX Tian T Qi WF A ring-like cascade connection and a class of NFSRs with the same cycle structures Des. Web1 de ago. de 2024 · The cascade connection of NFSRs, known as an important architecture, has been adopted in Grain family of stream ciphers. In this paper, a new sufficient condition under which an NFSR cannot be decomposed into the cascade connection of two smaller NFSRs is presented, which is easy to be verified from the … hillary 2008 t shirts