| Summary: | 碩士 === 國立臺南大學 === 資訊教育研究所碩士班 === 90 === In one distributed testing system, the system is promising to solve the problems of the
overloaded of the server and the traffic congestion of the internet caused by multiple
access.However,the distributed system introduces a security problem "How to manage test
bank and item response testing system among the decentralized school network?" has become
an important issue. Besides prevent from human operation error that causes system instability,
the most important of this issue is to prevent interception of the test bank by another people
that affect equitableness of the examination.
Therefore, we will use some theories and technologies to design an encrypted and
decrypted system, The system major includes key agreement protocol and the security of
on-line test. Key agreement protocol let the schools participate in this test system can
authenticate to us and get the key of encrypted test bank in order to an ease of security
management. The security of on-line test provides a secure environment of on-line test to
improve indemnification during test.
In this paper, our key protocol based on user’s password and add into the idea of server’s
public key. In enough security, the efficiency of key protocol is very important. This way we
proposed not only let client and server can agreement a secure session key, decreased the
number of exponential computations and rounds key protocol needs, and promoted the
efficiency of protocol.
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