針對目前學分制網絡管理系統中存在的安全性問題進行了討論，并運用PKI技術提出了一套可行的改進方案。該方案對用戶的身份驗證采用了數字證書管理，對關鍵數據進行數字簽名，數據傳輸采用了安全連接，實現了數據真實性、完整性、不可否認性。目前越來越多的高校實行學分制改革，該方案的實施對保證學分制的安全性具有一定的實用性和借鑒性。
關 鍵 詞 公鑰; 身份認證; 安全套接層; 學分制; 管理系統

Abstract This paper discusses the problem in the credit management system of the universities and presents a security solution for them.The solution is based on the public key infrastructure technology.In the solution, the validation of user identity adopts the figure certificate,and the key data is figure validated.The data transmission adopts the secure socket layer.The authenticity,integrality and the undeniableness is realized.The credit management is the trend of the universities of China, and more and more universities put the credit system in practice. The implementation of the security solution, which assures the security of the credit management system, is of significant practical value.
Key words public key infrastructure; certification authority; secure sockey layer; credit; management system