摘要
Siegenthaler’s“Correlation Immunity”concept has been improved in this paper.From practical points of view,the new concept is more powerful than the original one in avoid-ing the trade-off between“the order of correlation immunity”and“the linear complexity”of keystreams in cipher system.Bent functions are also introduced into the studies of linear approxima-tion and entropy immunity for feedforward networks.New results and new methods are presentedalso.
Siegenthaler's“Correlation Immunity”concept has been improved in this paper. From practical points of view,the new concept is more powerful than the original one in avoid- ing the trade-off between“the order of correlation immunity”and“the linear complexity”of key streams in cipher system.Bent functions are also introduced into the studies of linear approxima- tion and entropy immunity for feedforward networks.New results and new methods are presented also.
基金
Project supported by the Fund of National Natural Science for Yourth.
