International Association
for Cryptologic Research

In this note, we study a specific optimization problem arising in the recently proposed coefficient grouping technique, which is used for the degree evaluation. Specifically, we show that there exists an efficient algorithm running in time $\mathcal{O}(n)$ to solve a basic optimization problem relevant to upper bound the algebraic degree. We expect that some results in this note can inspire more studies on other optimization problems in the coefficient grouping technique.