【摘要】 可编程S盒和可编程反馈移位寄存器是可编程密码芯片的两个重要的部件。文章给出了可编程S盒和可编程反馈移位寄存器的一种逻辑设计方法，按照该方法设计的S盒能够通过编程实现任意的布尔逻辑函数，按照该方法设计的反馈移位寄存器能够通过编程灵活地改变反馈抽头和反馈函数。更多还原

【Abstract】 The programmable S box and feedback shift register are two important components of the programmable cryptography chip．Logic design methods for the programmable S box and feedback shift register are proposed in this paper．The S box designed according to the method can implement all logic functions by programming．The feedback taps and feedback function of the feedback shift register designed according to the method can be changed expediently by programming．更多还原