基于SM9的周期性可否认环签密方案的设计OA

To address the conflict between privacy protection and responsibility tracing in traditional cryptographic schemes,a periodic deniable ring signcryption scheme based on SM9 was proposed.This scheme combined the SM9 identity-based cryptographic algorithm with deniable ring signature technology,and introduced a periodic mechanism to enhance the privacy protection of the signcryptors and the deniability of non-signcryptors.It ensured that the sign-cryptor's responsibility could be traced within a specific time period,while further protecting the signcryptor's privacy once the litigation period expires.The design not only guaranteed data integrity and security theoretically but also im-proved system efficiency through optimization.Analysis results indicate that the proposed scheme has advantages in pri-vacy protection,security,and computational overhead,making it suitable for high-privacy demand scenarios such as elec-tronic voting,financial transactions,and government confidential communications.