Security Model for Certificateless Aggregate Signature Schemes
Lei Zhang, Futai Zhang · 2008
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.