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标准模型下安全的基于证书密钥封装方案

李继国, 杨海珊, 张亦辰   

  1. 河海大学计算机与信息学院, 江苏南京 211000
  • 收稿日期:2011-08-23 修回日期:2012-01-19 出版日期:2012-08-25
    • 作者简介:
    • 李继国 男,1970年生于黑龙江省富裕县,博士,教授,博士生导师,主要研究领域为信息安全、密码学理论与技术、可信计算等. E-mail:ljg1688@163.com 杨海珊 女,1985年生于山西省吕梁市,硕士,主要研究领域为密码学理论与技术.
    • 基金资助:
    • 国家自然科学基金 (No.60842002,61103183,61103184); 中国博士后基金 (No.20100471373); 江苏省"六大人才高峰"项目 (No.2009182); 中央高校基本科研业务费专项资金资助项目 (No.2009B21114,2010B07114); 河海大学优秀创新人才支持计划

Certificate-Based Key Encapsulation Mechanism Secure in the Standard Model

LI Ji-guo, YANG Hai-shan, ZHANG Yi-chen   

  1. College of Computer and Information Engineering, Hohai University, Nanjing, Jiangsu 211000, China
  • Received:2011-08-23 Revised:2012-01-19 Online:2012-08-25 Published:2012-08-25
    • Supported by:
    • National Natural Science Foundation of China (No.60842002, 61103183, 61103184); Post-doctoral Foundation of China (No.20100471373); Six Talents Peaks in Jiangsu Province (No.2009182); Fundamental Research Funds for the Central Universities (No.2009B21114, 2010B07114); Excellent Innovative Talent Program of Hohai University

摘要: 混合加密是将公钥加密与对称加密结合的一种加密技术.将密钥封装机制引入到基于证书加密方案中,提出了基于证书密钥封装机制的形式化定义及安全模型,构造了一个基于证书密钥封装方案.基于判定双线性Diffie-Hellman困难问题假定,在标准模型下证明提出的方案是自适应选择密文安全的.

关键词: 密钥封装机制, 基于证书加密, 标准模型, 双线性对

Abstract: A hybrid construction is a formal method of combining asymmetric encryption and symmetric encryption.By introducing key encapsulation mechanism into certificate-based encryption scheme,we propose a formal definition and security model of the certificate-based key encapsulation mechanism.Furthermore,we present a construction of the certificate-based key encapsulation scheme.Based on decision bilinear Diffie-Hellman difficulty assumption,the proposed scheme is provably secure against indistinguishability under adaptive chosen-ciphertext attack in the standard model.

Key words: key encapsulation mechanism, certificate-based encryption, standard model, bilinear pairing

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