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In order to solve the issue that existing direct anonymous attestation (DAA) scheme can not operate effectively in different domains, based on the original DAA scheme, a novel direct anonymous attestation protocol used in multi domains environment is proposed and designed, in which, the certificate issuer located in outside of domain can be considered as a proxy server to issue the DAA certificate for valid member nodes directly. Our designed mechanism accords with present trusted computing group (TCG) international specification, and can solve the problems of practical authentication and privacy information protection between different trusted domains efficiently. Compared with present DAA scheme, in our protocol, the anonymity, unforgeability can be guaranteed, and the replay-attack also can be avoided. It has important referenced and practical application value in trusted computing field. 相似文献
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会话初始协议(SIP)在许多领域已经开始发挥重要的作用。作为下一代互联网中的核心协议之一,SIP实体间通讯的安全性成为了至关重要的问题。通过对SIP现有的安全机制进行分析和比较,在此基础之上提出了一种新的基于自生成证书公钥加密体制(SGC-PKE)的可认证密钥协商方案,保证了SIP消息在传输过程中的完整性和机密性,并克服了使用公钥基础设施(PKI)带来的缺点。 相似文献
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VLAN越级攻击及其安全防御策略 总被引:1,自引:0,他引:1
本文通过以交换机为核心的虚拟局域网(VLAN)为研究对象,就 VLAN 的安全问题加以讨论。以 VLAN 越级攻击及安全防御策略为主。文中的攻击手段都通过经过了笔者实际操作并给出实例,并提出了针对这些攻击的防御方法及VLAN 安全策略方案。 相似文献
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