中文摘要：

在研究圆锥曲线密码体制的基础上，设计了一个基于双难题的圆锥曲线有序多重数字签名方案，并将其与XML数字签名技术相结合，实现了高校教务管理系统中对学生成绩的多重数字签名，以保证学生成绩信息的有效性、真实性和完整性，提高学生成绩管理的工作效率，增强教务管理系统的实用性．通过系统的运行验证，以及与椭圆曲线有序多重数字签名方案比较，对学生成绩的有序多重数字签名达到预期效果，系统的安全性和运行效率得到进一步的提高．

英文摘要：

On the basis of the research of conic curve cryptosystem, a sequential digital multi-signature scheme based on dual problem on conic curve is designed. Combined it with XML digital signature technology, the digital multi- signature to students＇ performance in college educational management system is implemented to ensure the validity, authenticity and integrity of students＇ performance information, improve the efficiency of the students＇ performance management, and enhance the practicality of educational management system. By operating the system and comparing the sequential digital multi signature scheme based on elliptic curve, the desired effect of sequential digital multi-signature to students＇ performance is achieved. The security of the system and operating efficiency is further improved.