Based On Homomorphic Signature Against Content Pollution Attacks In Future Network

With the development of society, people increasingly dependent on the Internet to enhance their Internet applications and computing models are also increasingly rich, TCP / IP architecture currently unable to meet the needs of the Internet has begun to sustainable development, especially in the security control, mobility, in particular content distribution gradually showing not solve the problem. Named data network is now considered one of the Internet could replace the host center network architecture IP-based infrastructure, which uses an intermediate node built-in network caching method to optimize network transmission efficiency. It does this by naming a substitute for the physical address data naming the road along the path by forwarding data(exchange or forwarded Interest / Data package) at each node. And all nodes in the network NDN(ie hosts, routers) have caching capabilities to meet the request to enter the node content. However, dependent on the cache will cause some adversary effective and relatively easy to implement attacks- Content pollution attack.Homomorphic signature-based network coding is a content-oriented, and the method of attack effective against pollution, and the method can increase network throughput and improved data security. In this thesis, based on network coding signature scheme with the state to solve the pollution problem NDN contents. First,we use a dynamic public key technology, in case you do not update the private key can be authenticated for each generation; secondly, homomorphic feature uses a hash function to the message intermediate node and the destination node can receive the signature verification. Furthermore, when naming the data when the network topology is simple and fixed, with all the nodes share a random number generator to generate encoded vectors, so as to omit encoding vector distribution. In short, not only within our program effective in preventing generation / intergenerational pollution attack, but also effective in preventing pollution attack NDN content.Currently, due to the NDN is in the preliminary research stage, we try put the named data networks and network coding signature linked to study together. In this thesis, the introduction of homomorphic signature NDN proposed a new idea: by homomorphic signature into NDN, effectively improve network utilization, enhance data security, and promote the development of NDN architecture itself.