Abstract: Aiming at actual needs of network examination, a secure network examination mechanism is proposed by using cryptological methods synthetically. Encryption, digital signature, digital envelope are used to authenticate the identity of examinee. The network congestion problem caused by downloading the examination paper at the same time for all examinees is solved efficiently and the security is improved when the examinees submit their papers at the same time in the proposed system. A secure management platform for examination is constructed, and the fairness and justice of the examination can be ensured.

Key words: network examination, time-stamp, digital signature

摘要： 针对网络考试的实际需要，运用密码学方法提出网络考试安全机制，采用基于身份的密码技术实现考生的身份鉴别。利用加密、数字签名、数字信封等技术解决瞬时大量试题下载和考生答卷安全上传的网络拥塞问题。为网络考试构建一个安全管理平台，保证了考试的公平、公正。

关键词: 网络考试, 时间戳, 数字签名

CLC Number: 

• TP393