Affiliations: [1] School of Mathematics and Statistics, Ludong University, Yantai 264025, China | [2] Nanjing University of Information Science & Technology, Nanjing 210044, China | [3] Huawei Technologies Co. Ltd., Singapore | [4] Department of Mathematics, Hangzhou Normal University, Hangzhou 311121, China | [5] School of Mathematics, South China Normal University, Guangzhou 510631, China, E-mails: [email protected], [email protected], [email protected], [email protected]
Correspondence:
[*]
Corresponding author.
Abstract: This paper studies the generic construction of certificate-based signature (CBS) from certificateless signature (CLS). This paper proposes a new generic conversion from CLS to CBS which is more intuitive, simpler, and provably secure without random oracles than the current one. To develop the security proof, we put forth one novel CLS security model which features a previously neglected but nontrivial attack and hence captures the CLS security notion more comprehensively. We show that many existing CLS schemes can be proved secure in the current model by slightly modifying its original security proof. Following this conversion, many provably secure CBS schemes can be constructed from the corresponding existing CLS schemes.
Keywords: certificateless signature, certificate-based signature, identity based signature, provable security
Journal: Informatica, vol. 28, no. 2, pp. 215-235, 2017
