Efficient Identity-Based Signature Scheme in the Standard Model

摘要：

Constructing identity-based signature(IBS) secure in the standard model is one of the active topics of current cryptography. We present a new efficient IBS scheme without random oracles and prove that it achieves adaptive identity, chosen plaintext security. Our scheme is obtained from a modi-fication of Gentry’s recently proposed identity based encryption scheme. It is constructed based on the truncated decisional augmented bilinear Diffie-Hellman exponent assumption (AB-DHE) and it is an efficient signature scheme, which achieves O(1)-size public keys, O(1)-size signatures. Besides, either public keys and signatures has no relation with the number of participants, and the number of pairing computations needed for signing and verifying is only one time. Compared with other IBS systems, our scheme has comparable properties and computation efficiency.

关键词： Identity-based Signature Bilinear Group Trun-cated decisional ABDHE assumption

作者: Xia Fei Yanqin Zhu Xizhao Luo

作者单位: School of Computer Science and Technology Soochow University, Suzhou 215006, China School of Compute School of Computer Science and TechnologySoochow University,Suzhou 215006, China Provincial Key Labo

会议类型: 国际会议

会议名称: 2010 3rd International Conference on Advanced Computer Theory and Engineering(2010年第三届先进计算机理论与工程国际会议 ICACTE 2010)

会议地点: 成都

会议语种:英文

页码: 1-4

在线出版日期: 2010-08-20（万方平台首次上网日期，不代表论文的发表时间）