A New Efficient Certificate-Based Signature Scheme

作者：Zhang Yichen; Li Jiguo^*; Wang Zhiwei; Yao Wei

来源：Chinese Journal of Electronics, 2015, 24(4): 776-782.

DOI：10.1049/cje.2015.10.019

• Certificate-based signature
• Random oracle model
• Provable security
• Bilinear pairings

Certificate-based cryptography is a new kind of public key algorithm, which combines the merits of traditional Public key infrastructure (PKI) and identify-based cryptography. It removes the inherent key escrow problem in the identity-based cryptography and eliminates the certificate revocation problem and third-party queries in the traditional PKI. In this paper, we propose an efficient certificate-based signature scheme based on bilinear pairings. Under the strong security model of certificate-based signature scheme, we prove that our scheme is existentially unforgeable against adaptive chosen message and identity attacks in the random oracle. In our scheme, only two pairing operations are needed in the signing and verification processes. Compared with some certificate-based signature schemes from bilinear pairings, our scheme enjoys more advantage in computational cost and communicational cost.

• 出版日期2015-10
• 单位河海大学