CAJ | 학술논문

根据非线性反馈移存器的操作特点，提出了由变量提取、可重构反馈函数计算和动态数据更新三个模块组成的非线性反馈移存器可重构计算模型，并针对公开的序列密码算法中的非线性反馈移存器的特征，给出了对应模块的可重构设计方法。实验表明，该设计可灵活高效地重构目前公开的序列密码算法非线性反馈移存器。在0．18μm CMOS工艺下，当工作位宽为128 bit时，其等效门数为1．9万门，最大工作频率可达417 MHz，为序列密码算法非线性反馈移位寄存器的实现提供了一种安全高效的策略。
근거비선성반궤이존기적조작특점，제출료유변량제취、가중구반궤함수계산화동태수거경신삼개모괴조성적비선성반궤이존기가중구계산모형，병침대공개적서렬밀마산법중적비선성반궤이존기적특정，급출료대응모괴적가중구설계방법。실험표명，해설계가령활고효지중구목전공개적서렬밀마산법비선성반궤이존기。재0．18μm CMOS공예하，당공작위관위128 bit시，기등효문수위1．9만문，최대공작빈솔가체417 MHz，위서렬밀마산법비선성반궤이위기존기적실현제공료일충안전고효적책략。
According to the operating characteristics of nonlinear feedback shift registers(NFSRs),this paper proposed a reconfigurable NFSR computing model.The model consisted of 3 modules,variables extraction,reconfigurable feedback func-tion calculation and dynamic data updating.Aiming at NFSRs in public stream ciphers algorithms,the paper proposed recon-figurable design methods of corresponding modules.The experiments show that the design in this paper can configure NFSRs in public stream cipher algorithms flexibly and efficiently.In 0.18μm CMOS process,the equivalent logic gate count is 19 000, and the maximum working frequency can reach 417 MHz when the width is 128 bit.And this paper provides a safe and effi-cient strategy for NFSRs in stream cipher algorithms.