Research On Anonymous Electronic Auction Protocol Based On Anonymous Communication

With the innovative development and widespread popularity of the Internet,more and more privacy leakage problems are endangering the property security of human and national.However,traditional encryption technology can no longer satisfy the privacy protection of identity information and location information.Therefore,anonymous communication technology came into being and has been widely studied by scholars.As an important field in e-commerce,electronic auctions have ushered in new development opportunities with the development of Internet technology.However,most traditional electronic auction schemes focus on the protection of bidding information and ignore the protection of bidders' identity information and location information.Therefore,this thesis proposes an anonymous electronic auction protocol based on anonymous communication,which can not only guarantee the privacy of bidding information but also achieve the anonymity of bidder identity information and location information.The main research contents of this thesis are as follows:(1)The anonymous communication model based on the randomly selected node forwarding message strategy and hybrid encryption mechanism is applied to the electronic auction protocol,and a new anonymous electronic auction protocol is proposed.Its implementation process includes system preparation,bidding process,bid opening process,and payment and verification process.In the anonymous electronic auction protocol,when the bidder sends bidding information and the auction server responds to the message,the anonymous communication model is used for anonymous communication.During the bidding process,bidders must pay a security deposit and cannot deceive the auction house.The bidder with the highest bid price is the winning bidder,and the winning bidder remits money through the bank.(2)The anonymity of the protocol was qualitatively analyzed and quantitatively calculated.Based on path length calculation,a new anonymous metric model based on probability theory was proposed to calculate the anonymity of the sender.Andensure the anonymity of the bidder,content,and route of the protocol.The attack resistance,robustness,and security of the protocol were analyzed,and this protocol was compared with other anonymous communication protocols and other electronic auction protocols.This protocol not only meets the security requirements of the electronic auction scheme but also has good resistance to attack and robustness.During the communication process,the protocol does not need to establish a routing path in advance,and can better adapt to the dynamic changes of the network topology.(3)The protocol is simulated systematically,the experimental data shows that with the increase of the number of nodes,the average response time of the system increases approximately linearly,and the average forwarding traffic of the nodes is approximately the same.And the experimental value of the average path length of the message meets the theoretically expected value under a certain forwarding probability.This shows that the system has better robustness and stability,and achieves load balancing of network traffic.