AN EFFICIENT CERTIFICATE-BASED DESIGNATED VERIFIER SIGNATURE SCHEME

作者：Li, Jiguo^*; Qian, Na; Zhang, Yichen; Huang, Xinyi

来源：Computing and Informatics, 2016, 35(5): 1210-1230.

• Public key cryptography
• digital signature
• certificate-based signature
• designated verifier signature
• random oracle model

Certificate-based public key cryptography not only solves certificate revocation problem in traditional PKI but also overcomes key escrow problem inherent in identity-based cryptosystems. This new primitive has become an attractive cryptographic paradigm. In this paper, we propose the notion and the security model of certificate-based designated verifier signatures (CBDVS). We provide the first construction of CBDVS and prove that our scheme is existentially unforgeable against adaptive chosen message attacks in the random oracle model. Our scheme only needs two pairing operations, and the signature is only one element in the bi-linear group G1. To the best of our knowledge, our scheme enjoys shortest signature length with less operation cost.

• 出版日期2016
• 单位福建师范大学; 河海大学