On-line secure multi-attribute reverse auction method based on matching degree

Abstract

The invention discloses an on-line secure multi-attribute reverse auction method based on matching degree. The method comprises the steps of: a purchaser server generating an ideal information matrix according to an ideal scheme including an attribute set A=[a1, a2, .. ,aN], encrypting the ideal information matrix to obtain an encrypted matrix, and sending the encrypted matrix to supplier clients; each supplier client carrying out calculation according to respective corresponding alternative information matrix and the encrypted matrix, and sending the obtained matching matrix to the purchaser server; each supplier client corresponding to one matching matrix, each alternative information matrix being generated by the corresponding supplier client according to respective alternative scheme, each alternative scheme corresponding to one supplier client, and the alternative scheme having the same attribute as the ideal scheme; the purchaser server calculating the matching degree of the alterative scheme corresponding to each matching matrix and the ideal scheme respectively, sequencing the obtained at least one matching degree, and selecting the alternative scheme corresponding to the highest matching degree as an auction scheme for outputting.

Description

technical field [0001] The invention relates to an online security multi-attribute reverse auction method based on matching degree, which belongs to the technical field of electronic auction. Background technique [0002] In recent years, with the rapid development of the Internet and mobile terminals, the online auction system as a new type of electronic decision-making model has been widely used in the fields of electronic auctions, among which online reverse auction is the mainstream direction of online auction research. [0003] Reverse auction is also known as reverse auction, bidding or tendering system. A buyer can use the network or a specific platform to purchase items, and the suppliers participating in the auction need to conduct off-site, remote, and real-time bidding within the specified time. [0004] With the content of auctions becoming more and more abundant, auctions with price as the only attribute are far from meeting the needs of buyers. Buyers and supp...

AI Technical Summary

Problems solved by technology

[0006] However, since the scoring function designed by Srinath requires the participation of relevant information in the alternatives provided by the supplier, the possibility of information exposure in the alternatives is increased, resulting in a decrease in the privacy of the auction scheme

In addition, since the auction protocol proposed by Srinath requires multiple interactions between the participants, the number of communication rounds in the auction protocol is large, and the operation efficiency of the auction protocol is not high.

Moreover, due to the addition of a third party, the probability of an attacker intercepting the information transmitted in the communication increases, which reduces the security of the auction protocol

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