利用仿射坐标与射影坐标的映射关系，设计了一种有限素整数域上ECC快速算法，使得ECC在电子商务中实际安全应用成为可能。
A fast arithmetic of ECC based over finite prime field is designed by the map of between affine coordinates and projective coordinates. This make it possible that ECC's...
若射影直线为水平，则映射点的求取非常简单、方便。
Since the projection line is horizontal, it is easy and convenient to obtain the mapping points.
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