A privacy-preserving bidding method based on blockchain

Abstract

The invention discloses a blockchain-based privacy protection bidding method. The invention includes the following steps: 1) The user publishes the task information to the block chain; 2) The block chain provides a reasonable range of bidding, and at the same time, pushes the task information to the service party; 3) The service party hides the quotation data and encryption, and then publish the commitment and ciphertext to the blockchain, the blockchain confirms whether the commitment is within a reasonable range, and then compares the size of the ciphertext corresponding to the commitment within the scope to produce the final result; 4) Notify the winning service party, and the service party will send the public key and fake ID to the user; 5) The user encrypts and signs the real location and sends it to the winning service party; 6) The service party verifies the user's identity and obtains the real location through decryption Address and verification information; the service party arrives at the real location to complete the identity verification of both parties through the verification information and complete the bidding process. The invention realizes the protection of private data.

Description

technical field [0001] The invention relates to the technical field of block chains, in particular to a privacy protection bidding method based on block chains. Background technique [0002] The emergence of the online bidding platform has solved the problems of abundant resources and scattered users, and at the same time improved the transaction efficiency, enabling buyers to spend the least cost and get the highest value. However, the existing online bidding platforms are all maintained by third parties, and their authenticity and reliability are entirely dependent on third-party organizations. People have always been concerned about whether their information is open and their operations are transparent and credible. [0003] As a distributed database, the blockchain is jointly maintained by all nodes, which can solve the problem of third-party trust. However, the blockchain has the problem of privacy leakage due to the disclosure of personal privacy data. Therefore, it i...

AI Technical Summary

Problems solved by technology

However, the existing online bidding platforms are all maintained by third parties, and their authenticity and reliability are completely dependent on third-party organizations. People have always been concerned about whether their information is open and their operations are transparent and credible.

[0003] As a distributed database, the blockchain is jointly maintained by all nodes, which solves the problem of third-party trust. However, the blockchain has the problem of privacy leakage due to the disclosure of personal privacy data.