概述:
线性反馈移位寄存器(LFSR)归属于移位寄存器(FSR),除此之外还有非线性移位寄存器(NFSR)。移位寄存器是流密码产生密钥流的一个主要组成部分。 G F ( 2 ) GF(2) GF(2)上一个n级反馈移位寄存器由n个二元…
官方描述 - (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event; Returns a Boolean value indicating whether the receiver contains the specified point. - (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event; The view object that is the farthes…