本文讨论了重模二次剩余的定义、性质,完整地设计出选取最优扩域上的椭圆曲线密码系统的基点的算法,并给出了选取成功的概率和相关数学证明.
The definition and characters of Double-module quadratic residue is discussed in this paper, The arithmetic for choosing base point of Elliptic curve cryptosystem in optimal extension field is worked out and proven mathematically, moreover, the successful probability is also provided.