基于背包和椭圆曲线的代理数字签名方案。结合椭圆曲线数字签名方案和变形的背包问题，提出了一种改进的椭国曲线数字签名

方案.-Backpack and the elliptic curve based on the proxy digital signature scheme. Combination of elliptic curve digital signature scheme and deformation of the knapsack problem, put forward an improved elliptical curve digital signature program of the country.