2026SUCTF -- Crypto -- SULattice -- 解题记录代码转化过来的递推公式就是 x n e w = ( ∑ i = 0 23 A [ i ] ⋅ X [ i ] ) m o d M x_{new}=(∑_{i=0}^{23}A[i]\cdot X[i])modM xnew=(∑i=023A[i]⋅X[i])modM， h i n t = x n e w > > ( 60 − 40 ) = x n e w > > 2 hint=x_{new}>>(60-40)=x_{new}>>2 hint=xnew>>(60−40)=xnew>>2，靶机端会更新X，可以看