A distributed anonymous scoring method and system

Abstract

The invention discloses a distributed anonymous scoring method and system. The public key certificate is registered for the scoring judge and disclosed to all judges. The scoring judge automatically generates a random check code and calculates its hash value. The hash value of the random check code is signed anonymously by the public key of the member and the private key of the individual, and the hash value of the random check code after the signature is registered on the public chain of the system, until the random check code hash is completed on all the reviewers. value registration; when the paper is officially marked, the marking results of each marking judge are submitted together with a random check code; the system server calculates the hash value of the random check code and compares it with the hash value on the public chain, and the judgment is valid sex. Based on the one-way characteristics of blockchain, ring signature and hash function, the invention realizes the complete anonymity of the distributed scoring judges, adopts random check code as an anonymous authentication method, reduces the computational cost of the system, and improves the data interaction efficiency.

Description

technical field [0001] The invention relates to information security and user privacy protection technology, in particular to a distributed anonymous scoring method and system. Background technique [0002] Digital signature is a public key cryptographic algorithm, which can realize the function of traditional signature or seal, and can ensure the integrity, authenticity and non-repudiation of information transmission. However, on some issues involving user privacy protection, traditional digital signatures cannot meet the requirements of applications. For example, under the conditions of the epidemic, marking experts from all over the world cannot gather in one place to conduct closed marking on candidates' examination papers. Online marking is an efficient distributed solution. [0003] The traditional scoring system includes a server and multiple scoring judges. The scoring judges encrypt and transmit the scoring results to the server through the system public key, and t...

AI Technical Summary

Problems solved by technology

[0005] However, because the ring signature involves multiple complex public key encryption and decryption calculations, there are large efficiency problems in both certificate verification management and actual information transmission. In order to achieve the effect of anonymity, the calculation overhead of the system is increased, and the transmission efficiency

Especially in the distributed marking scenario, if complex ring signature authentication is performed for each marking result, the practicability of the anonymous scoring system will be reduced. Therefore, while ensuring the anonymity of the marking judges, how to reduce the computing overhead of the system and enhance the System practicability has become a technical problem to be solved urgently

[0006] On the other hand, it is difficult to detect and avoid cheating on the marking and scoring results through the traditional ring signature in the marking and scoring scenario, and it is difficult to trace the anonymous signature

[0007] In the marking and scoring scenario, sometimes the marking and judging committee requests to claim the marking and scoring results given by itself, but in order to achieve better anonymity in the traditional marking and scoring system, it is difficult for the marking and judging committee to claim the marking and evaluating results given by itself

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