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无证书体制下的多接收者签密密钥封装机制 被引量：4

Certificateless Signcryption KEM to Multiple Recipients
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摘要 无证书签密密钥封装机制(CLSC-KEM)与数据封装机制共同构成无证书混合签密方案。该文提出一个新的概念:无证书体制下的多接收者签密密钥封装机制(mCLSC-KEM)。给出了mCLSC-KEM的定义以及安全模型,并构造了一个具体的方案。该方案比一般性构造(对每个接收者分别运行CLSC-KEM)高效很多,其密钥封装仅需计算1个双线性对,且对应的数据封装仅需运行1次对称加密,而一般性构造需计算n个双线性对和n次数据封装(设n个接收者)。在随机预言模型下,基于Gap双线性Diffie-Hellman问题,该文的方案是可证明安全的。 Certificateless signcryption key encapsulation mechanism （CLSC-KEM）,combined with a data encapsulation mechanism,is used to construct certificateless hybrid signcryption. This paper introduces a new concept：certificateless signcryption KEM to multiple recipients （mCLSC-KEM）. The definition and the security models are given for this new primitive,and a concrete mCLSC-KEM scheme is presented. This scheme is much more efficient than the generic construction,for it needs to compute only one pairing during key encapsulation and one symmetric encryption during data encapsulation,in contrast to n pairings and n symmetric encryptions for the generic scheme. Our scheme is provably secure in the random oracle model,under the hardness assumption of the Gap-BDH problem.
作者 孙银霞 李晖 李小青
机构地区 西安电子科技大学计算机网络与信息安全教育部重点实验室
出处 《电子与信息学报》 EI CSCD 北大核心 2010年第9期2249-2252,共4页 Journal of Electronics & Information Technology
基金 国家自然科学基金(60772136) 国家863计划项目(2007AA01Z435) 中国科学院"九五"重大项目(2008BAH22B03 2007BAH08B01) 国家111项目(B08038)资助课题
关键词 密码学 无证书 签密密钥封装机制 多接收者 双线性对 可证明安全 随机预言模型 Cryptography Certificateless Signcryption key encapsulation mechanism Multiple recipients Bilinear pairing Provably secure Random oracle model
分类号 TN918.2 [电子电信—通信与信息系统]
  • 相关文献

参考文献18

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二级参考文献15

  • 1陈伟东,冯登国.签密方案在分布式协议中的应用[J].计算机学报,2005,28(9):1421-1430. 被引量：19
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共引文献72

同被引文献23

  • 1Zheng Yuliang. Digital signcryption or how to achieve cost (signature&encryption) <cost ( signature ) + cost ( encryption ). Ad- vances in Cryptology, 1997 ; 1294 : 165-179.
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  • 10Smart N P. Efficient key encapsulation to multiple parties. Security- In Communication Networks. LNCS, Springer-Verlag, 2005 ; 3352 : 208-219.

引证文献4

二级引证文献39

电子与信息学报
2010年 第9期

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