通信学报 ›› 2017, Vol. 38 ›› Issue (Z2): 43-50.doi: 10.11959/j.issn.1000-436x.2017267

• 学术论文 • 上一篇    下一篇

抗密钥泄露的无证书签密方案

秦艳琳,吴晓平,胡卫   

  1. 海军工程大学信息安全系,湖北 武汉 430033
  • 出版日期:2017-11-01 发布日期:2018-06-07
  • 作者简介:秦艳琳(1980-),女,河南安阳人,博士,海军工程大学讲师,主要研究方向为密码学及网络安全。|吴晓平(1961-),男,山西新绛人,海军工程大学教授、博士生导师,主要研究方向为信息安全及系统工程。|胡卫(1979-),男,湖北宜城人,海军工程大学副教授,主要研究方向为网络及信息安全。
  • 基金资助:
    国家自然科学基金面上基金资助项目(61672531);海军工程大学自主立项基金资助项目(20161607)

Leakage-resilient certificateless signcryption scheme

Yan-lin QIN,Xiao-ping WU,Wei HU   

  1. Department of Information Security,Naval University of Engineering,Wuhan 430033,China
  • Online:2017-11-01 Published:2018-06-07
  • Supported by:
    The National Natural Science Foundation of China(61672531);The Natural Science Found of Naval University of Engineering(20161607)

摘要:

传统无证书签密方案在实际应用环境中容易遭受边信道攻击,带来密钥泄露问题。为抵制此类攻击,基于椭圆曲线密码体制及双线性对提出一种抗密钥泄露的无证书签密方案,并在随机预言机模型下证明方案的安全性建立在判定 Diffie-Hellman 问题的困难性之上,且能抵制适应性选择密文及密钥泄露攻击,满足选择消息及密钥泄露攻击下的存在不可伪造性。该方案没有使用构造复杂的非交互式零知识证明系统(NIZK),在签密阶段不含双线性对运算,与同类方案相比,能抵制密钥泄露攻击且具有较高的运算效率。

关键词: 无证书签密, 抗密钥泄露, 判定Diffie-Hellman问题, 椭圆曲线密码, 随机预言机

Abstract:

In practical applications,the potential adversary may exploit partial information about the secret keys by side-channel attacks ,traditional certificateless signcryption schemes can’t resist these key-leakage attacks.A leakage-resilient certificateless signcryption scheme based on Elliptic Curve Cryptography and bilinear pairing was presented.In the random oracle,proved that the security of the scheme is based on the decisional Diffie-Hellman assumption.The scheme is also proved semantically secure against adaptive posterior chosen-ciphertext key-leakage attacks (KL-CCA2),and existentially unforgeable against chosen-message key-leakage attacks(KL-CMA).The proposed scheme was free from non-interactive zero knowledge proof system and needs no bilinear paring operation in signcryption phase.Compared with other schemes of the same kind,the proposed scheme can resist key-leakage attacks and maintains high efficiency.

Key words: certificateless signcryption, leakage-resilient, decisional Diffie-Hellman assumption, elliptic curve cryptography, random oracle

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