基于Dilithium的可追踪环签名方案OA

Traditional ring signature schemes based on number theory problems face severe security threats,and their com-pletely anonymous characteristics are easily abused for illegal activities.As a variant of ring signature,the trackable ring sig-nature can be traced while satisfying anonymity,while also tracking malicious signatures to avoid anonymity abuse,achieving controllable supervision of the signer.The post-quantum digital signature solution Dilithium has the advantages of small over-head,fast computing and resistance to quantum attacks.A traceable ring signature scheme based on Dilithium is proposed,combining the NIST standardized signature algorithm Dilithium with controllable anonymity for the first time to achieve the dual goals of privacy protection and abuse traceability against quantum attacks.Under the random oracle model,it is proved that this scheme is non-forgery,anonymous,linkability and traceability.At the same time,this paper designs a cross-chain transaction solution based on Dilithium traceable ring signature algorithm to meet the privacy protection of data transactions.Compared with other schemes,this scheme has significantly reduced computational overhead,while communication overhead still needs further optimization.