A blockchain-based non-tamperable network question-making and answering method

Abstract

The invention discloses a tamper-resistant network question setting and answering method based on a block chain and belongs to the field of Internet technology. The method comprises the following steps: before an examination, performing registration on a respondent, automatically generating one pair of public key and private key by a terminal of the respondent by utilizing an elliptic curve algorithm, reserving the private key by the terminal, and broadcasting the public key to other terminals and a server in the network; during respondence, reading a question bank table by a question settingserver, randomly acquiring questions, and forming an examination question message; after the terminal receives the verified question message, performing the respondence, after the questions are answered, for avoiding answers from being leaked during transmission, encrypting the answers by the respondent by using a private key of the server and performing hash processing, thus answer ciphertext isformed; and extracting effective answers by the server, decoding the encrypted answers by using an own private key, and acquiring final answers and processing, wherein question setting and question answering flow messages can be stored in a block chain way respectively. The method disclosed by the invention can record all the flows from question setting to question answering, thereby guaranteeingthat a respondence process can be traced back but can not be tampered

Description

technical field [0001] The invention relates to a method for setting and answering questions on a network that cannot be tampered with based on a block chain, and belongs to the technical field of the Internet. Background technique [0002] The current information-based examination system is based on a centralized processor for examination process management, which cannot effectively prevent the confidentiality of examination content and the protection of the validity and integrity of examination answer information. Driven by the interests of examination scores, it is easy to To lure stakeholders to maliciously tamper with data by intercepting and modifying inter-network messages during the exam, or modifying the central database after the exam. Contents of the invention [0003] In view of this, the purpose of the present invention is to provide a block chain-based network question making and answering method that cannot be tampered with. [0004] The purpose of the pres...

AI Technical Summary

Problems solved by technology

[0002] The current information-based examination system is based on a centralized processor for examination process management, which cannot effectively prevent the confidentiality of examination content and the protection of the validity and integrity of examination answer information. Driven by the interests of examination scores, it is easy to Entice stakeholders to maliciously tamper with data by intercepting and modifying inter-network messages during the exam, or modifying the central database after the exam

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