Spectrum auction is one of the most effective ways to achieve dynamic spectrum allocation in cognitive radio net-works,and it provides one effective way to manage the spectrum demands of IoT devices with limited resou...Spectrum auction is one of the most effective ways to achieve dynamic spectrum allocation in cognitive radio net-works,and it provides one effective way to manage the spectrum demands of IoT devices with limited resources.Most spectrum auctions focus on protecting bidder privacy and achieving excellent social efficiency,but few tackles the verification of auction results that are controlled by the auctioneer.In this paper,we propose a cloud-based framework for verifiable privacy-preserving spectrum auctions.Our framework adopts a modified AFGH re-encryption algorithm that achieves both bid privacy protection and auction results verification at the same time.The cloud server helps to compute auction results based on homomorphic encryption,and an auctioneer decrypts the encrypted data from the server to obtain auction results.Meanwhile,the property of re-encryption makes it possible for any bidder to verify the auction results without compromising other bidders’privacy.展开更多
基金partially supported by the National Natural Science Foundation of the China under grant 61,571,049 and 62072065the Fundamental Research Funds for the Central Universities(2021CD-JKYJH031)the Overseas Returnees Innovation and Entrepreneurship Support Program of Chongqing under grant cx20200004.
文摘Spectrum auction is one of the most effective ways to achieve dynamic spectrum allocation in cognitive radio net-works,and it provides one effective way to manage the spectrum demands of IoT devices with limited resources.Most spectrum auctions focus on protecting bidder privacy and achieving excellent social efficiency,but few tackles the verification of auction results that are controlled by the auctioneer.In this paper,we propose a cloud-based framework for verifiable privacy-preserving spectrum auctions.Our framework adopts a modified AFGH re-encryption algorithm that achieves both bid privacy protection and auction results verification at the same time.The cloud server helps to compute auction results based on homomorphic encryption,and an auctioneer decrypts the encrypted data from the server to obtain auction results.Meanwhile,the property of re-encryption makes it possible for any bidder to verify the auction results without compromising other bidders’privacy.
