An embedded cryptosystem needs higher reconfiguration capability and security. After analyzing the newly emerging side-channel attacks on elliptic curve cryptosystem （ECC）, an efficient fractional width-w NAF （FWNA...An embedded cryptosystem needs higher reconfiguration capability and security. After analyzing the newly emerging side-channel attacks on elliptic curve cryptosystem （ECC）, an efficient fractional width-w NAF （FWNAF） algorithm is proposed to secure ECC scalar multiplication from these attacks. This algorithm adopts the fractional window method and probabilistic SPA scheme to reconfigure the pre-computed table, and it allows designers to make a dynamic configuration on pre-computed table. And then, it is enhanced to resist SPA, DPA, RPA and ZPA attacks by using the random masking method. Compared with the WBRIP and EBRIP methods, our proposals has the lowest total computation cost and reduce the shake phenomenon due to sharp fluctuation on computation performance.展开更多
针对目前EPCglobal ONS(Object Name Service)系统存在的信息容易被偷听、篡改、欺骗等威胁,提出一种基于DNSCurve协议和椭圆曲线加密机制的ONS系统来实现产品动态信息在查询过程中的安全性和隐私性,并通过实验验证此系统的安全性能,能...针对目前EPCglobal ONS(Object Name Service)系统存在的信息容易被偷听、篡改、欺骗等威胁,提出一种基于DNSCurve协议和椭圆曲线加密机制的ONS系统来实现产品动态信息在查询过程中的安全性和隐私性,并通过实验验证此系统的安全性能,能够抵御偷听、篡改、欺骗等攻击,有效地加强了ONS系统安全,对整个物联网的发展具有很重要的现实意义。展开更多
门限密码学提供了建立入侵容忍应用的新方法。文中在介绍并分析了基于ECC的ElGamal数字签名方案和t out of n秘密共享方案的基础上,提出了一个基于ECC的零知识证明方法和一个基于ECC的门限数字签名方案;研究了该方法和方案在建立入侵容...门限密码学提供了建立入侵容忍应用的新方法。文中在介绍并分析了基于ECC的ElGamal数字签名方案和t out of n秘密共享方案的基础上,提出了一个基于ECC的零知识证明方法和一个基于ECC的门限数字签名方案;研究了该方法和方案在建立入侵容忍CA中的应用。最后,对比ITTC项目中关于入侵容忍CA设计的方案,分析显示该方案在安全性、效率和可用性方面具有良好的性能。展开更多
基金supported by the National Natural Science Foundation of China(60373109)Ministry of Science and Technologyof China and the National Commercial Cryptography Application Technology Architecture and Application DemonstrationProject(2008BAA22B02).
文摘An embedded cryptosystem needs higher reconfiguration capability and security. After analyzing the newly emerging side-channel attacks on elliptic curve cryptosystem （ECC）, an efficient fractional width-w NAF （FWNAF） algorithm is proposed to secure ECC scalar multiplication from these attacks. This algorithm adopts the fractional window method and probabilistic SPA scheme to reconfigure the pre-computed table, and it allows designers to make a dynamic configuration on pre-computed table. And then, it is enhanced to resist SPA, DPA, RPA and ZPA attacks by using the random masking method. Compared with the WBRIP and EBRIP methods, our proposals has the lowest total computation cost and reduce the shake phenomenon due to sharp fluctuation on computation performance.
文摘针对目前EPCglobal ONS(Object Name Service)系统存在的信息容易被偷听、篡改、欺骗等威胁,提出一种基于DNSCurve协议和椭圆曲线加密机制的ONS系统来实现产品动态信息在查询过程中的安全性和隐私性,并通过实验验证此系统的安全性能,能够抵御偷听、篡改、欺骗等攻击,有效地加强了ONS系统安全,对整个物联网的发展具有很重要的现实意义。
文摘门限密码学提供了建立入侵容忍应用的新方法。文中在介绍并分析了基于ECC的ElGamal数字签名方案和t out of n秘密共享方案的基础上,提出了一个基于ECC的零知识证明方法和一个基于ECC的门限数字签名方案;研究了该方法和方案在建立入侵容忍CA中的应用。最后,对比ITTC项目中关于入侵容忍CA设计的方案,分析显示该方案在安全性、效率和可用性方面具有良好的性能。
