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计算机工程 ›› 2011, Vol. 37 ›› Issue (17): 108-110. doi: 10.3969/j.issn.1000-3428.2011.17.035

• 安全技术 • 上一篇    下一篇

可公开验证的高效无证书签密方案

蔡伟艺1a,杨晓元1a,2,韩益亮1a,张敏情1a,1b,陈海滨1a,1b   

  1. (1. 武警工程学院 a. 电子技术系网络与信息安全武警部队重点实验室;b. 网络与信息安全研究所,西安 710086; 2. 西安电子科技大学网络信息安全教育部重点实验室,西安 710071)
  • 收稿日期:2011-03-07 出版日期:2011-09-05 发布日期:2011-09-05
  • 作者简介:蔡伟艺(1986-),男,硕士,主研方向:密码学,网络安全,信息安全;杨晓元,教授;韩益亮,副教授、硕士;张敏情,教授;陈海滨,硕士
  • 基金资助:
    国家自然科学基金资助项目(60573036);陕西省自然科 学基金资助项目(2010JM8034);武警工程学院基础研究基金资助项目(wjy201119)

Efficient Certificateless Signcryption Scheme with Public Verifiability

CAI Wei-yi  1a, YANG Xiao-yuan  1a,2, HAN Yi-liang  1a, ZHANG Min-qing  1a,1b, CHEN Hai-bin  1a,1b   

  1. (1a. Key Laboratory of Network & Information Security Under the Chinese Armed Police Force, Department of Electronic Technology; 1b. Institution of Network & Information Security, Engineering College of Armed Police Force, Xi’an 710086, China; 2. Key Laboratory of Network & Information Security of the Ministry of Education, Xidian University, Xi’an 710071, China)
  • Received:2011-03-07 Online:2011-09-05 Published:2011-09-05

摘要: 根据安全无证书签密模型,提出一种基于双线性对的可公开验证的高效无证书签密方案。该方案由密钥生成中心(KGC)、签密方、解签密方和验证方组成,使用盲化技术以及用户公钥和秘密值先于KGC部分私钥生成的方法提高密码系统的信任等级,在公开验证时只需将明文和密文提交给验证方。分析结果表明,该方案具有安全保密性、不可伪造性、不可否认性,并且计算量较小、易于实现。

关键词: 无证书签密, 双线性对, 可公开验证, 保密性, 不可伪造性

Abstract: According to the safety certificateless signcryption model, this paper presents an efficient certificateless signcryption scheme with public verifiability based on bilinear pairing. There are four participants which are Key Generation Center(KGC), signcryptioner, designcryptioner and verifier. In order to improve the trust level of this cryptosystem, binding technique is adopted and the user’s secret value and public key is generated before KGC extracting the partial private key. The public verification only needs the message and ciphertext to validation party. Analysis result shows that the scheme enjoys desirable properties of confidentiality and existential unforgeability, computational cost is lower, and it is easy to realize.

Key words: certificateless signcryption, bilinear pairings, public verifiability, confidentiality, unforgeability

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