椭圆曲线密码体制是公钥密码体制的一种实现方式，其密钥长度短、安全强度高、运算代价低，因而得到广泛研究和应用。-Ellipse Curve Cryptograph (ECC) is an implement of Public Key Cryptography. It is widely researched and used because of its advantages of shot private key, high security and low operation quantity.