Elliptic curve digital signature is based on the difficulty of computing discrete logarithm.Compared with the other scheme, it is excellent and high in security with short key and rapid circulation.

• 椭圆曲线签名系统是建立在求解离散对数困难性的基础上，通过与其他方案的比较，它具有安全性高，密钥短，运行速度快的特点。