Online examination management system and method thereof

摘要

The present invention relates to a system and method for managing an online test based on a blockchain network. The online test management method comprises the steps of: allowing a system administrator node to assign a subject identification information context and an examiner context to a question examiner node, and assign the subject identification information context and an applicant context to a test applicant node; allowing the question examiner node to sign on a test question with a private key of the question examiner, and encrypt the signed test question in a CP-ABE encryption manner by using an access right binary tree consisting of the examiner context and the subject identification information context to record the encrypted test question in a block chain network; and allowing the test application node to read the test question recorded in the blockchain network, decrypt and read the test question by using the applicant context and the subject identification information context, answer the test questions, sign on the answer with the private key of the test applicant node, encrypt the signed answer with the access right binary tree consisting of the applicant context and the applicant identification information context, and record the same in the blockchain network. Therefore, each node is guaranteed for security, reliability, and privacy protection in the blockchain network.