作者投稿和查稿 主编审稿 专家审稿 编委审稿 远程编辑

计算机工程 ›› 2010, Vol. 36 ›› Issue (8): 135-137. doi: 10.3969/j.issn.1000-3428.2010.08.047

• 安全技术 • 上一篇    下一篇

一种基于身份的签密方案

李 顺,曾 超,李 军   

  1. (中国工程物理研究院电子工程研究所,绵阳 621900)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-04-20 发布日期:2010-04-20

Identity-based Signcryption Scheme

LI Shun, ZENG Chao, LI Jun   

  1. (Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang 621900)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-04-20 Published:2010-04-20

摘要: 利用双线性对提出一种基于身份的签密方案。在BDH问题是困难的假设下,运用随机预言机模型证明该方案的安全性。该方案满足机密性、不可伪造性、不可否认性、公开验证性和前向安全性,仅需4次对运算,其中2次为可预运算。与当前较为高效的几个方案相比,该方案的运算量更低。

关键词: 签密, 基于身份的加密, 双线性对

Abstract: This paper proposes a new identity-based signcryption scheme using bilinear pairings and proves its security in the random oracle model while assuming the hardness of Bilinear Diffie-Hellman(BDH) problem. The scheme satisfies confidentiality, unforgeability, nonrepudiation, public verification and forward security. It only costs four pairing operations and two of them can be precomputed. Compared with the efficient schemes up to date, computation cost of the proposed scheme is less.

Key words: signcryption, Identity-Based Encryption(IBE), bilinear pairings

中图分类号: