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组通信安全
相关语句
  secure group communication
     Many emerging mobile wireless applications depend upon secure group communication, in which a secure and efficient group rekeying algorithm is very important.
     安全性是移动自组网络组通信的基本需求,安全、高效的组密钥更新算法是保证组通信安全的关键.
短句来源
  group communication security
     Every group member just keeps the information of those nodes on the path from the leaf node representing itself to the root node of the key tree, which is used for the member to compute the group key guaranteeing the group communication security with Diffie-Hellman key exchange algorithm.
     每个组成员只需保存从代表其的叶节点到树的根节点的路径上的所有节点信息,并且根据这些信息通过Diffie-Hellman密钥交换算法就可以计算出保障组通信安全的组密钥。
短句来源
     For the key management of large dynamic multicast groups, there is a common difficulty: In order to insure group communication security, the members of a group are required to share a group communication key. But, when the numbers often change, the key must be often changed too.
     对于大型动态多播组的密钥管理,目前都存在一个共性难题:为了确保组通信安全,组内成员需要共享一个组通信密钥。
短句来源
  group communications security
     Group key management is the core issue in group communications security. The current group key management schemes mainly derive from LKH, while HLTN key architecture can ensure the property of the group key management protocol by limiting the height of the tree.
     组密钥管理是组通信安全的核心问题,目前研究的组密钥管理方案大都源于状结构(LKH),而限高树密钥结构能够通过限制树的高度来保证组密钥管理协议的性能。
短句来源
  “组通信安全”译为未确定词的双语例句
     This thesis focuses on security problems of group communication, and intends to construct a policy-based security management infrastructure for group communication.
     本文主要研究组通信的安全管理问题,目标是建立一个基于策略的组通信安全管理基础结构。
短句来源
     Security group management involves monitoring the relevant security activity of a group session, making management decisions and performing actions to control the behavior of the group, maintaining the security property of the group session.
     组通信安全管理主要包括监控组的安全行为,做出管理决策,执行相应的控制动作,维护组通信的安全性质。
短句来源
     The focal point in the area of group security management is the determination and enforcement of group policies.
     组通信安全管理的核心就是策略的正确制定和执行。
短句来源

 

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      secure group communication
    Group key exchange protocols are basic protocols to provide privacy and integrity in secure group communication.
          
    On the purpose to build the secure group communication among of a group of client users and one server, in this paper, we will present a new password-based group key agreement protocol.
          
    In this sense, it wouldn't be too wrong to call this protocol as incomplete comparing to the others in providing secure group communication.
          
    In contrast, secure group communication is very dependent on the composition of the group.
          
    Media delivery usually involves quality of service of data transmission, reliable and secure group communication and different transport mechanisms.
          
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    To make the multicast session secure,the multicast group needs to change the session key when the group member set changes.Batch re keying mechanism,in which group leader batches up join/leave requests and serves them together after a period of time,is introduced to reduce the overhead of group re keying.Fixed period cannot adapt to the dynamic nature of multicast session and may not be optimal all the time.An adaptive batch re keying algorithm was presented,and it which can adaptively determine the most...

    To make the multicast session secure,the multicast group needs to change the session key when the group member set changes.Batch re keying mechanism,in which group leader batches up join/leave requests and serves them together after a period of time,is introduced to reduce the overhead of group re keying.Fixed period cannot adapt to the dynamic nature of multicast session and may not be optimal all the time.An adaptive batch re keying algorithm was presented,and it which can adaptively determine the most appropriate time according to current request arrival pattern.Applications can change the parameters of the adaptive batching algorithm to meet their performance preference.Simulation results show that the adaptive algorithm achieves optimal performance point in various multicast scenarios.

    为保证组通信的安全 ,需要在组成员出现变化的时候更新通信秘钥 .为节省秘钥更新开销 ,研究人员引入了秘钥批量更新机制 ,它能让安全组播通信的管理节点将组成员的加入 /退出请求缓冲起来 ,然后定期地更新秘钥 ,从而能有效地减少秘钥更新带来的开销 .但是 ,固定周期的秘钥更新策略显然不能适应组播通信的动态变化 ,难以在各种情况下都达到较为理想的结果 .本文介绍了一个自适应的秘钥更新算法 ,它能根据当前组成员加入 /退出请求的到达模式动态决定秘钥更新的周期 .另外 ,它还能让用户调整算法参数 ,以满足自身的特定要求 .试验模拟的结果表明 ,该算法能在各种组播通信情况下达到优化的状态 .

    For the key management of large dynamic multicast groups, there is a common difficulty: In order to insure group communication security, the members of a group are required to share a group communication key. But, when the numbers often change, the key must be often changed too. So the system overhead is very large. In this paper, we present a hierarchical two-level key management for large dynamic multicast groups based on the elliptic curve cryptosystem. The group communication key is substituted by multiplayer...

    For the key management of large dynamic multicast groups, there is a common difficulty: In order to insure group communication security, the members of a group are required to share a group communication key. But, when the numbers often change, the key must be often changed too. So the system overhead is very large. In this paper, we present a hierarchical two-level key management for large dynamic multicast groups based on the elliptic curve cryptosystem. The group communication key is substituted by multiplayer and two-level keys. In this scheme, the system overhead is reduced greatly, and the group key management becomes easy. The communication security can be increased by applying the elliptic curve cryptosystem.

    对于大型动态多播组的密钥管理,目前都存在一个共性难题:为了确保组通信安全,组内成员需要共享一个组通信密钥。对于组中频繁的成员变化,需要相应改变组通信密钥,这样的系统开销很庞大。本文提出一种基于椭圆曲线密码体制的大型动态多播组的分层二级密钥管理方案,将原来的组通信密钥改为多层两级密钥,这样大大减小了系统开销,便于管理,并且使用椭圆曲线密码体制加强了通信安全。

    Many emerging mobile wireless applications depend upon secure group communication, in which a secure and efficient group rekeying algorithm is very important. In this paper, a rekeying algorithm named DGR (distributed group rekeying algorithm) is proposed, which is based on DGKMF (distributed group key management framework). DGR algorithm generates a group key with local secrete information, and is suitable for mobile ad hoc networks. In order to further reduce the communication complexity, the DGR algorithm...

    Many emerging mobile wireless applications depend upon secure group communication, in which a secure and efficient group rekeying algorithm is very important. In this paper, a rekeying algorithm named DGR (distributed group rekeying algorithm) is proposed, which is based on DGKMF (distributed group key management framework). DGR algorithm generates a group key with local secrete information, and is suitable for mobile ad hoc networks. In order to further reduce the communication complexity, the DGR algorithm is improved on by generating a cluster dynamically in the rekeying process, and the CDGR (cluster distributed group rekeying algorithm) is proposed. The security, correctness, and completeness of the two algorithms are discussed in this paper, and their message complexity costs are evaluated. Simulation results demonstrate that the two algorithms are better than other algorithms and protocols such as CKD, GDH v.2 and BD in the group rekeying success ratio and delay, and the CDGR is better than GDR in the group rekeying delay because it uses the cluster in the rekeying process.

    安全性是移动自组网络组通信的基本需求,安全、高效的组密钥更新算法是保证组通信安全的关键.在移动自组网络分布式组密钥管理框架(distributed group key management framework,简称DGKMF)的基础上,提出了一种组密钥更新算法——DGR(distributed group rekeying)算法.该算法能够利用局部密钥信息更新组密钥,适合拓扑结构变化频繁、连接短暂、带宽有限的移动自组网络.为了进一步降低算法的通信代价,通过在组密钥更新时动态生成组密钥更新簇,对DGR算法进行了改进,提出了CDGR(cluster distributed group rekeying)算法,并讨论了上述算法的安全性、正确性和完备性,分析了算法的通信代价.最后,利用ns2模拟器对算法的性能进行了分析.模拟结果显示,DGR和CDGR算法在组密钥更新成功率和延迟等方面均优于其他算法,并且由于采用簇结构,CDGR算法的更新延迟低于DGR算法.

     
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