A new certificateless signature with enhanced security and aggregation version

Authors

Jiang Deng, University of Electronic Science and Technology of China
Chunxiang Xu, University of Electronic Science and Technology of China
Huai Wu, University of Electronic Science and Technology of ChinaFollow
Liju Dong, University of WollongongFollow

RIS ID

101383

Publication Details

Deng, J., Xu, C., Wu, H. & Dong, L. (2015). A new certificateless signature with enhanced security and aggregation version. Concurrency Computation, 28 (4), 1124-1133.

Abstract

To satisfy the applications in certificateless environment, many researchers have been investigating certificateless aggregate signature schemes. Several schemes that are independent with the aggregated numbers are proposed to reduce the computation overhead. In these schemes, the pairing computations that in verification procedure needs are a constant value. Recently, Hou et al. proposed an improved certificateless aggregate signature scheme. They demonstrated the scheme is provably secure in the random oracle model. However, we find that their scheme is insecure in their security model by giving a concrete attack. Then, we propose an improved certificateless signature scheme and use it to construct a new certificateless signature scheme with enhanced security and aggregation. Furthermore, we provide formal security proof of our new scheme. Compared with other four schemes, our enhanced protocol is more suitable for realistic applications.