共查询到20条相似文献,搜索用时 93 毫秒
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目前,移动IP技术的使用越来越普遍,安全性也显得越来越重要。介绍了移动IP和IPSec,讨论了如何实现移动IP和IPSec的集成使得可以为移动IP提供有效的安全服务,给出了移动节点移动到专网(企业网)之外后整个协议套的运行实例,并描述了2种密钥管理协议(SKIP和ISAKMP/Oakley)的作用过程。 相似文献
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针对移动IP注册协议中家乡和移动节点过多且复杂的计算问题,提出了一个新的基于身份的密钥分发方案,并在此基础上设计了一种高效的移动IP注册协议。该协议实现了移动IP各个节点间相互认证,其中移动节点与家乡代理之间具有双重认证的特点。双线性对和秘密随机数的选取保证了消息的安全性,消息认证码Mac和数字签名Sig保障了消息的完整性。该协议从整体上减少了计算量,降低了注册延迟率,同时也有效地保证了安全性。安全性分析表明,该方案满足移动IP的安全要求。 相似文献
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原协议基于量子纠缠并允许渐进地进行密钥的安全分发和进行具有同样安全性的直接通信,提出了一种即时的保密通信协议,即信息能在传递中被译码.但是原协议的效率是很低的,进行一轮协议只能以概率(1-c)传递一个比特的信息;另外,原协议还设置了一个控制模式并用到了公共信道,以便即时发现是否有窃听存在,而发现窃听的概率只有50%,这无疑是增大了通信的复杂性和脆弱性.本改进方案基于量子纠缠能解决上述问题并具有更高的安全性. 相似文献
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一种前向安全的电子邮件协议 总被引:1,自引:0,他引:1
电子邮件已成为Internet环境中传送通讯数据的一个重要应用.为了安全有效地传递电子邮件协议数据,目前很多研究者从电子邮件协议的基本安全性以及可认证电子邮件协议等方面提出了一些安全方案.但这些方案仅仅解决了电子邮件协议的某些安全需求,并不能从实用安全电子邮件协议的角度来提供完整的安全解决方案.本文首次给出了一个安全电子邮件的定义,提出了一个前向安全的电子邮件协议.该协议利用短期密钥来加密协议消息,并且使用Diffie-Hellman算法进行短期密钥协商.安全分析表明该协议不仅保证了协议的基本安全性,而且确保了协议的前向安全性.另外,该协议还提供了安全电子邮件协议中所需要的可认证性,时效性和敏感性. 相似文献
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基于LPN问题的RFID安全协议设计与分析 总被引:2,自引:0,他引:2
该文对现有的基于LPN问题的RFID安全协议进行了系统分析,总结了这类协议存在的一些设计缺陷。为了克服这类协议中存在的安全漏洞,对其中一个最新版本的协议HB+进行改进,设计了一个新的RFID安全协议HB#,并在随机预言模型下给出了新协议的归约性证明。 相似文献
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Mohammad Javad Sadri Maryam Rajabzadeh Asaar 《International Journal of Communication Systems》2020,33(14)
Internet of Vehicles (IoV), as the next generation of transportation systems, tries to make highway and public transportation more secure than used to be. In this system, users use public channels for their communication so they can be the victims of passive or active attacks. Therefore, a secure authentication protocol is essential for IoV; consequently, many protocols are presented to provide secure authentication for IoV. In 2018, Yu et al proposed a secure authentication protocol for WSNs in vehicular communications and claimed that their protocol could satisfy all crucial security features of a secure authentication protocol. Unfortunately, we found that their protocol is susceptible to sensor capture attack, user traceability attack, user impersonation attack, and offline sink node's secret key guessing attack. In this paper, we propose a new authentication protocol for IoV which can solve the weaknesses of Yu et al's protocol. Our protocol not only provides anonymous user registration phase and revocation smart card phase but also uses the biometric template in place of the password. We use both Burrow‐Abadi‐Needham (BAN) logic and real‐or‐random (ROR) model to present the formal analysis of our protocol. Finally, we compare our protocol with other existing related protocols in terms of security features and computation overhead. The results prove that our protocol can provide more security features and it is usable for IoV system. 相似文献
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In order to transmit secure messages, a quantum secure direct communication protocol based on extended three-particle GHZ state was presented, in which the extended three-particle GHZ state was used to detect eave sdroppers . In the security analysis, the method of the entropy theory is introduced, and three detection strategies are compared quantitatively by using the constraint between the information eavesdroppers can obtain and the interference introduced. If the eavesdroppers intend to obtain all information, the detection rate of the original "Ping-pong" protocol is 50% ; the second protocol used two particles of EPR pair as detection particles is also 50% ; while the presented protocol is 58% . At last, the security of the proposed protocol is discussed. The analysis results indicate that the protocol in this paper is more secure than the other two. 相似文献
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提出了一种高效的可信网络存储协议,协议只需两轮交互就实现了服务器与用户间的身份认证和密钥协商,同时在协议的第一轮交互中实现了对客户端平台身份的认证和平台完整性校验,改进了原来系统服务器遭受攻击易导致整个系统瘫痪的缺点,提高了系统的可靠性和协议的执行效率,在此基础上建立了用户与智能磁盘间的安全信道。最后利用CK模型证明了协议是SK安全的,用户与磁盘间的信道是安全信道,提高了系统数据的保密性、完整性和不可抵赖性。 相似文献
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Mobile adhoc network is dynamic in nature and it operates completely in an infrastructure-less environment. It discovers the way routes dynamically to reach the destination. Securing a dynamic way route, which is not known before establishing communication, is always a challenge in the mobile ad hoc network. Most of the existing secure routing protocols target to evade specific type of attacks or malicious behaviour of the nodes or networks. We propose a novel secure way routing protocol for securing the dynamic way routes in MANET. It provides a unique session key for each route to secure the data communication. Moreover, it authenticates the data packets using asymmetric cryptography and secures the routing field message using two-way asymmetric cryptography. The proposal is implemented and tested for assessing the protocol’s performance. We have also compared the protocol with the other secure routing protocols for evaluating its performance. 相似文献