Scalar multiplication is an important factor affecting the elliptic curve algorithm executive efficiency ,There are many methods of elliptic curve scalar multiplication ,Scalar multiplication based on double‐base chains is a better efficien‐cy algorithm ,In this paper ,the basic principle of greedy algorithm that convert integer to double‐base chains representation and the realization in the VB environment are discussed .%标量乘法是影响椭圆曲线加密算法执行效率的一个重要因素,椭圆曲线的标量乘法的方法很多,基于双基链的标量乘法是一种效率较好的算法,文中讨论求解整数的双基链表示的基本算法—贪婪算法的基本原理和在 VB 环境下的实现。
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