Online examination management system and method thereof

摘要

The present invention relates to an online test management system and method based on a blockchain network. The online test management method includes: the system administrator node granting a subject identification information context and a presenter context to a problem submitter node, and assigning a subject identification information context and a test taker context to the test taker node; The question submitter node signing the test question with the private key of the question issuer, and encrypting the signed test question in CP-ABE encryption using a binary tree of access rights consisting of the presenter context and the subject identification information context to record the block chain network; The test taker node reads the test questions recorded in the blockchain network, decrypts and reads the test questions using the test taker context and subject identification information context, writes an answer to the test question, and the answer is It includes the steps of signing with the private key of the test taker node and encrypting the signed answer with a binary tree of access rights consisting of the test taker context and test taker identification information context, and recording it in a blockchain network.