摘要
已有的聚合签名方案的部分密钥提取过程中存在被敌手伪造的问题。文章基于双线性映射提出了一种新的无证书的顺序聚合签名方案,并将自认证方案与聚合签名方案相结合,从而保证了部分密钥的安全,同时对聚合签名方案过程中的签名算法进行改进以提高性能。结果表明,与聚合签名方案相比,新顺序聚合签名可以改善方案的整体效率。在随机预言模型下证明了该方案可以防止攻击者的伪造。
Previous certificateless aggregate signature schemes are subject to adversary＇s forgery when extrac- ting partial secret key. A new certificateless sequential aggregate signature scheme based on bilinear mapping is presented in this paper. Self-authentication mechanism and aggregate signature are combined to protect the secrecy of partial secret keys. Meanwhile, the algorithm to generate aggregate signatures is improved to en- hance efficiency. The result of performance analysis shows that overhead of the proposed sequential aggregate signature scheme is improved in comparison with previous aggregate signature scheme. Finally, the proposed scheme is proven to be secure against forgery under random oracle model.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2015年第6期775-777,850,共4页
Journal of Hefei University of Technology：Natural Science
基金
国家自然科学基金青年基金资助项目(61301111)
扬州大学科技创新培育基金资助项目(2013CXJ026)
关键词
无证书签名
聚合签名
顺序聚合签名
双线性映射
随机预言模型
certificateless signature
aggregate signature
sequential aggregate signature
bilinearmapping
random oracle model
