通信学报2025，Vol.46Issue(12)：80-92,13.DOI:10.11959/j.issn.1000-436x.2025244
基于国密算法SM9的环签密方案
Ring signcryption scheme based on domestic cryptographic algorithm SM9
摘要
Abstract
To address the linear computational increase with ring size in existing identity-based ring signcryption schemes,an efficient ring signcryption scheme based on the Chinese national cryptographic standard SM9 was proposed.Linear operations involving ring members were shifted to finite fields,achieving approximately constant computational cost.By redesigning the private key structure,signature and key components were encapsulated into a single group ele-ment during signcryption,further reducing both computational and communication overhead.Under the random oracle model,the proposed scheme was proven to satisfy confidentiality,unforgeability,and perfect anonymity.Experimental results show that for a ring size of 1 024,the signcryption and unsigncryption efficiencies of the proposed scheme are 20.79 and 87.73 times those of existing solutions,representing improvements of 16.02%and 46.86%over the optimal ring-signature-then-encryption combination,respectively.关键词
环签密/国密算法/SM9算法/基于标识的密码/常数级开销/可证安全Key words
ring signcryption/domestic cryptographic algorithm/SM9 algorithm/identity-based cryptography/constant overhead/provable security分类
信息技术与安全科学引用本文复制引用
谢振杰,刘胜利,谢耀滨,李路凯,卫明远..基于国密算法SM9的环签密方案[J].通信学报,2025,46(12):80-92,13.基金项目
装备预先研究基金资助项目(No.30603010601)Equipment Pre Research Project(No.30603010601) （No.30603010601）
