Title :
Security Model for Certificateless Aggregate Signature Schemes
Author :
Zhang, Lei ; Zhang, Futai
Author_Institution :
Coll. of Math. & Comput. Sci., Nanjing Normal Univ., Nanjing, China
Abstract :
Gong, Long, Hong and Chen defined the security model of certificateless aggregate signature schemes for the first time. However, there are some weaknesses exist in their model. In this paper, we point out some drawbacks of the security model of Gong et al.´s and present a new one. A certificateless aggregate signature scheme that is provably secure in our model is also presented. The security of our scheme is proved based on the intractability of the computational Diffie-Hellman problem in the random oracle model.
Keywords :
digital signatures; public key cryptography; Diffie-Hellman problem; certificateless aggregate signature scheme; random oracle model; security model; Aggregates; Computational intelligence; Computer science; Computer security; Educational institutions; Identity-based encryption; Mathematics; Public key; Public key cryptography; Routing protocols; aggregate signature; certificateless aggregate signature; certificateless cryptography; random oracle model;
Conference_Titel :
Computational Intelligence and Security, 2008. CIS '08. International Conference on
Conference_Location :
Suzhou
Print_ISBN :
978-0-7695-3508-1
