CAJ | 학술논문

提出了带记忆组合器的非线性复杂度和相关免疫阶的概念.通过分析,发现它们是设计带记忆组合器的重要准则;另一条设计准则是输出函数和状态函数的平衡性.根据这些新的带记忆组合器的设计准则,构造了一类具有很好性质的密钥流生成器.它的相关免疫阶可以是[0,n-1]中的任意一个整数,它的非线性度可以通过调整一些布尔函数获得.
제출료대기억조합기적비선성복잡도화상관면역계적개념.통과분석,발현타문시설계대기억조합기적중요준칙;령일조설계준칙시수출함수화상태함수적평형성.근거저사신적대기억조합기적설계준칙,구조료일류구유흔호성질적밀약류생성기.타적상관면역계가이시[0,n-1]중적임의일개정수,타적비선성도가이통과조정일사포이함수획득.
The concepts of nonlinear complexity and correlation immune order of combiner with memory are proposed in this paper. By analysis, we can see that they are two important criteria for designing combiner with memory. Another design criterion is that the output function and next-state function should be balanced. According to these new design criteria for combiner with memory, we construct a kind of keystream generators that have good properties. Its correlation immune order can be any 1≤k≤(N-1), and its nonlinearity can be obtained by modifying some Boolean functions.