• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Information and Computer Technologies >A New Homomorphic Message Authentication Code Scheme for Network Coding
【24h】

A New Homomorphic Message Authentication Code Scheme for Network Coding

机译：一种新的网络编码同态消息认证码方案

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Network coding (NC) can significantly increase network performance and make lossy networks more reliable. Since the middle nodes modify the packets during their path to destination, integrity of the original packets cannot be checked using classical methods (MACs, Signatures, etc). Though, pollution attacks are the most common threat to network coded systems, where an infected node can inject the data flow of a network with a number of false packets and ban the receiver from properly decoding the packets. A lot of work in the security of NC in resisting pollution attacks has been investigated in recent years, majority have the same security parameter 1/q. A Homomorphic MAC scheme is presented earlier to resist pollution attacks with a security level 1/q^l, In this paper, we will show that the mentioned scheme is subject to known-plaintext attacks. This is due to that part of the key can be revealed in an initial process. Also, the whole key could be revealed if the key is used more than once. Then, a modification to the mentioned scheme is proposed to overcome this issue. Besides, the MAC length is adjustable according to the required security level and not variable according to the vector's length which will accordingly increase the performance and efficiency of the scheme.
机译：网络编码（NC）可以显着提高网络性能，并使有损网络更加可靠。由于中间节点在其到达目的地的路径期间修改了数据包，因此无法使用经典方法（MAC，签名等）检查原始数据包的完整性。但是，污染攻击是对网络编码系统的最常见威胁，受感染的节点可以在其中注入大量虚假数据包，并阻止接收者正确解码数据包，从而注入网络数据流。近年来，已经进行了许多有关抵御污染攻击的NC安全性工作，其中大多数具有相同的安全参数1 / q。较早提出了一种同态MAC方案来抵御安全级别为1 / q ^ l的污染攻击。在本文中，我们将证明所提及的方案容易受到已知明文攻击。这是因为该密钥的一部分可以在初始过程中显示出来。同样，如果多次使用该密钥，则可能会显示整个密钥。然后，提出对上述方案的修改以克服该问题。此外，MAC长度可以根据所需的安全级别进行调整，而不能根据向量的长度进行调整，这将相应地提高该方案的性能和效率。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号