文章基本信息

标题：PKI Based Signcryption without Pairing: an Efficient Scheme with Tight Security Reduction
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作者：S. Sree Vivek ; S. Sharmila Deva Selvi ; Salini Selvaraj Kowsalya 等
期刊名称：Journal of Wireless Mobile Networks, Ubiquitous Computing, and Dependable Applications
印刷版ISSN：2093-5374
电子版ISSN：2093-5382
出版年度：2012
卷号：3
期号：4
页码：72-84
出版社：Innovative Information Science & Technology Research Group
摘要：Signcryption is a cryptographic primitive that fulfill the functionalities of digital signature and pub- lic key encryption simultaneously, at a cost significantly lower than that required by the traditional sign-then-encrypt or encrypt-then-sign approach. In this paper, we address the question whether it is feasible to construct a PKI based signcryption scheme with tight security reduction in the insider security model of signcryption without pairing. This question seems to have never been addressed in the literature before. We answer the question positively in this paper. We give a novel PKI based signcryption scheme and the security is based on CDH- assumption. Ours is the first scheme of its kind which is secure in insider security model proved with tight security reduction. All other PKI based systems without pairing neither have insider security nor have tight reduction. In-spite of a slightly higher count of exponentiation, our scheme is the most efficient one currently, thanks to the tight reduction we have established to our scheme
关键词：signcryption; random oracle model; tight security reduction; insider security threats