Online test and management system using blockchain network

초록

The current online test service only focused on convenience, but did not offer a solution to securing reliability. Also current online test service, which are centralized server storage and management methods, will not be able to maintain such systems in the event of SoF(Single-point of Failure) or physical problems. In this paper, we discuss online test and management system using private blockchain and CPABE(Ciphertext-Policy Attribute-Based Encryption, create an 'Access tree' based on the user attribute to encrypt the information) algorithm. In the system, the private blockchain network is constructed with the nodes of the system manager, examiners, and examinees, and each node has different authority. Since the data encrypted by the CP-ABE algorithm cannot be decrypted without the corresponding attribute, it is impossible to read or modify the data.

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