摘要
为了克服传统公钥基础设施中的证书管理以及提高环签密方案的安全性,提出一种有效的基于身份的环签密方案。通过使用双线性对技术,设计一个在标准模型下基于身份的环签密方案,并分析方案的正确性进行。通过两个困难问题假设CDH问题和DBDH问题,证明方案满足不可伪造性和不可区分性,同时通过与几个现有方案进行比较,指出该方案具有较高的效率。
To eliminate the need of certificates management as used in traditional public key infrastructure and to improve the security of ring signcryption scheme, we present an efficient identity-based ring signcryption scheme. Based on the bilinear pairing technique, we design an identity-based ring signcryption scheme in standard model and analyse its correctness. Meanwhile, it is proved through two difficulty prob- lems assumption of CDH and DBDH that this scheme satisfies the unforgeability and indistinguishability. At the same time, by comparing it with several existing ring signcryption schemes, we point out that this scheme has higher efficiency.
出处
《计算机应用与软件》
CSCD
北大核心
2014年第7期303-306,共4页
Computer Applications and Software
基金
国家自然科学基金项目(61170244)
