一种基于椭圆曲线的高效移动支付系统*

针对移动手持设备处理能力和存储空间较弱的限制，提出了一种基于椭圆曲线密码体制的移动电子支付系统。与传统的基于RSA及离散对数问题的电子支付系统相比，提出的系统所需安全参数字节较短且易于扩展，因而存储、计算和通信效率大大提高，能够很好地满足移动支付系统的所有安全要求，并能有效防止重复花费、欺诈行为和高手段犯罪。

Efficient mobile payment system based on ECC

Since the computing power and storage space of mobile handle terminal were very poor,this paper introduced a mobile payment system based on elliptic curve cryptosystems.Compared with previous e-cash systems based on RSA or discrete logarithm,the new system required much shorter security parameter size and it was convenient to be expanded.Moreover,the storage,the computation and communicating efficiency were improved in the new system,at the same time,all the security features for mobile payment were kept as usual.Furthermore,the system can prevent from double spending,fraud and perfect crime effectively.