共查询到16条相似文献,搜索用时 109 毫秒
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3GPP-AKA协议在第三代移动通信的安全性方面起着至关重要的作用,它保证了移动用户MS与VLR/HLR之间的双向认证及密钥协商.文中通过协议组合逻辑(PCL)对3GPP-AKA协议进行了形式化分析及安全性证明.分析表明3GPP-AKA协议可以满足它的安全目标,因此该协议可以安全的作为第三代移动通信中的认证和密钥分配协议. 相似文献
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针对形式化方法对安全协议DoS攻击分析的不足之处,提出了一种基于串空间模型的扩展形式化方法。利用扩展后的形式化方法,对IEEE802.11i四步握手协议进行了DoS攻击分析,发现其的确存在DoS攻击漏洞。通过分析,提出一种可以改善DoS攻击的方法,并通过了扩展形式化方法对于判断安全协议DoS攻击分析的测试规则。最后,根据扩展形式化方法对改进后的四步握手协议进行证明,得出改进后协议可以通过两类DoS测试规则运行至结束。 相似文献
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安全的认证密钥协商协议研究 总被引:1,自引:0,他引:1
对基于证书的密钥协商协议的设计与分析进行了比较深入的研究,研究内容包括:可证明安全的基于证书的密钥协商协议以及一种新的可认证密钥协商协议。主要研究成果有:介绍了密钥协商协议的概念和安全特性;提出一个新的认证密钥交换协议AKE-1。AKE-1效率较高,并且在最新的eCK07模型下是安全的,证明基于随机预言假设和CDH假设。另外,基于AKE-1,提出一轮的变体(满足只有一个实体在线)和三轮的变体(提供密钥确认属性),以满足不同的应用。 相似文献
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As the combine of cloud computing and Internet breeds many flexible IT services,cloud computing becomes more and more significant.In cloud computing,a user should be authenticated by a trusted third party or a certification authority before using cloud applications and services.Based on this,a protocol composition logic (PCL) secure user authentication protocol named UCAP for cloud computing was proposed.The protocol used a symmetric encryption symmetric encryption based on a trusted third party to achieve the authentication and confidentiality of the protocol session,which comprised the initial authentication phase and the re-authentication phase.In the initial authentication phase,the trusted third party generated a root communication session key.In the re-authentication phase,communication users negotiated a sub session key without the trusted third party.To verify the security properties of the protocol,a sequential compositional proof method was used under the protocol composition logic model.Compared with certain related works,the proposed protocol satisfies the PCL security.The performance of the initial authentication phase in the proposed scheme is slightly better than that of the existing schemes,while the performance of the re-authentication phase is better than that of other protocols due to the absence of the trusted third party.Through the analysis results,the proposed protocol is suitable for the mutual authentication in cloud computing. 相似文献
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Security protocols are the basis of many mobile communication systems, thus it is important to ensure protocol property correct. Using Protocol Composition Logic (PCL), this paper proves a Mobile IP (MIP) registration protocol that is based on certificateless public key signature without pairing between home agent and foreign agent, which minimizes the registration time and cost as well as improves the security compared with the identity-based and certificate-based registration protocol. Analysis and proof shows that the proposed protocol provides users security and authentications, moreover, the anonymity property is proved correct. 相似文献
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