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Multi-party security agreement based sealed electric auction scheme and verification method

A technology of security protocol and verification method, which is applied in the field of sealed electronic auction scheme and verification, and can solve the problems of poor practicability, reducing the security of the auction system, and complicated calculation of the auction agreement.

Inactive Publication Date: 2013-08-14
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing electronic auction agreements basically require the participation of the auction house, so there is a threat of collusion between the auction house and bidders to obtain benefits, which reduces the security of the auction system, and some auction agreements that do not rely on the auction house often calculate Complicated and not very practical

Method used

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  • Multi-party security agreement based sealed electric auction scheme and verification method
  • Multi-party security agreement based sealed electric auction scheme and verification method
  • Multi-party security agreement based sealed electric auction scheme and verification method

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Embodiment Construction

[0055] Aiming at the deficiencies of the prior art, the present invention designs a secure and publicly verifiable sealed electronic auction protocol by studying the multi-party security protocol, utilizing the Elliptic Curve Signature Constitution (ECDSA), the Elliptic Curve Cryptosystem and the Encrypted Data Comparison Protocol Program. In this scheme, the auction center also acts as a registration center, but because the agreement is publicly verifiable, the rights of the auction center are limited, and manipulations such as collusion between the auction center and bidders or sellers are prevented. This scheme not only meets the actual needs of electronic auctions, but also guarantees the security features required by electronic auctions, and can easily verify the bidding results without revealing the winning bidder and the winning bid price. Compared with the scheme, there is a small computational and communication cost.

[0056] It can be seen from the foregoing that th...

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Abstract

The invention relates to the fields of multi-party security calculation, communication security and eBusiness, and provides a publicly verifiable sealed electric auction scheme which meets characters of transaction requirement and safety and fairness requirements of the transaction, reduces transaction complexity and ensures communication security. Therefore, the technical scheme adopted is that the multi-party security agreement based sealed electric auction scheme and a corresponding verification method comprise the following steps: 1), building a secret key system for an auction company; 2), list price encryption and decryption, wherein the step comprises the steps: a), encrypting a list price through a public key pki-Bi by a bidder Bi, and b), decrypting by an auction center; 3), carrying out digital signature by the bidder and verifying that the digital signature scheme used by the bidder is an elliptic curve signature system; and 4), carrying out list price verification by the bidder. The invention is mainly applied to the field of auction communication.

Description

technical field [0001] The invention relates to the fields of multi-party security calculation, communication security and electronic commerce, and specifically relates to a sealed electronic auction scheme and verification method based on a multi-party security protocol. technical background [0002] Electronic auction is an important application of e-commerce, and it is a special spot transaction method in which the price and distribution process are determined by the auction group. With the development of network technology and the improvement of confidentiality systems, auction transactions have gradually shifted from the traditional mode to the electronic mode based on the network. The electronic auction system has two main advantages: First, the careful design of the electronic auction protocol can achieve the optimal allocation of resources and the rational use of resources. This feature comes from the economic characteristics of the auction, which is also the main re...

Claims

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Application Information

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IPC IPC(8): H04L9/32G06Q30/08H04L9/30H04L9/00
Inventor 李晓红李笑如许光全孙达志张程伟
Owner TIANJIN UNIV
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