Rational user-oriented secret reconstruction method, computer equipment, medium and termina

Abstract

The invention belongs to the technical field of communication, and discloses a rational user-oriented secret reconstruction method, computer equipment, a medium and a terminal, which analyze strategyselection when a rational user executes a secret reconstruction protocol by constructing a rational secret reconstruction game model, and in combination with an existing secret reconstruction mechanism, a plurality of rational secret reconstruction protocol design reference models suitable for different scenes are respectively provided, the reference models are utilized to constrain the self-profit of rational users, and a fair rational secret reconstruction protocol is utilized to enable participating users to obtain shared secrets. The invention provides a rational secret reconstruction design reference model based on confusion, and proves that the model can help a designer to comprehensively consider the self-profit behavior of a user, thereby constructing a rational secret reconstruction protocol which does not depend on a trusted third party and can ensure fairness. According to the invention, a designer can be helped to effectively restrain the self-profit of a rational user, sothat a rational secret reconstruction protocol suitable for a trusted third-party scene is designed.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a rational user-oriented secret reconstruction method, computer equipment, medium and terminal. Background technique [0002] At present, with the continuous development of communication technology, Internet services involving multiple parties such as edge computing, fog computing, and cloud computing are also becoming popular. In order to protect the security of multi-party Internet service data and the privacy of users, secret sharing schemes, which are an important component of distributed cryptosystems, have been extensively studied. [0003] Rational secret sharing is a secret sharing scheme that is more suitable for real life and proposed by combining self-interested users in game theory with traditional secret sharing. Its purpose is to solve the problem that in the actual use of traditional secret sharing schemes, due to the drive of "maximization of in...

AI Technical Summary

Problems solved by technology

However, due to the lack of a design reference model, protocol designers often rely on personal subjective experience when designing rational secret reconstruction protocols, and it is difficult to fully consider the self-interested behavior of rational users participating in secret reconstruction

This leads to the unfair situation that "the user who sends the sub-secret first cannot reconstruct the shared secret, but the user who does not send the shared secret can obtain the shared secret" when directly using the existing rational secret sharing protocol; even There will be an extreme situation where "users can deceive other users to regard the reconstructed false secret as a real shared secret"

[0020] (2) The existing cloud storage data security sharing scheme cannot provide the access control that "multiple people can only access the shared data online at the same time".

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