Title: A new certificate-based digital signature scheme in bilinear group
Authors: Jianglang Feng; Jindong Li
Addresses: Department of Mathematics, College of Management Science, Chengdu University of Technology, Chengdu, 610059, China ' Department of Mathematics, College of Management Science, Chengdu University of Technology, Chengdu, 610059, China
Abstract: Certificate-based signature preserves advantages of implicit certification and no private key escrow as the certificate-based encryption scheme presented at Eurocrypt 2003 by Gentry. In this paper, we present a certificate-based signature scheme derived from bilinear pairings and prove its security in the random oracle model. The scheme is ecure based on the traditional difficult problem defined in bilinear pairings. The efficiency is also presented to show the scheme is practical. Compared to earlier signatures with these properties, our scheme is efficient. Many other constructions could be derived by using this certificate-based signature in applications.
Keywords: digital signatures; certificate-based signatures; CBS; bilinear pairings; certificate-based cryptosystems; discrete logarithm problem; DLP; q-strong Diffie-Hellman; decision Diffie-Hellman problem; DDHP; provably secure; random oracle model; cryptography; security.
International Journal of Embedded Systems, 2014 Vol.6 No.1, pp.44 - 49
Received: 16 Jun 2013
Accepted: 24 Sep 2013
Published online: 31 Jul 2014 *