Research On Secure Network Coding

Since entering the information age,with the development of network technology,computers and the Internet have entered millions of households and have penetrated into every aspect of people's learning,work,and life,and even have had a tremendous impact on people's lives,corporate development,and social progress.What follows is a high demand for network performance,but the actual network resources are limited,and traditional network transmission mechanisms have not been able to achieve the maximum utilization of network resources.Although the idea of network coding can effectively improve the network data transmission performance,the security problem is one of the biggest obstacles to the practical application of network coding.How to effectively improve the security of data transmitted over the network under the premise of guaranteeing the advantages brought by network coding has become a top priority in the field of network coding research.This article focuses on the following research on anti-pollution safety network coding:Firstly,an anti-pollution adaptive security network coding scheme is proposed.This scheme improves the traditional anti-pollution mechanism based on linear subspace signatures and the adaptive mechanism of non-source nodes,and effectively combines the two.Compared with other adaptive security network coding,this scheme can significantly improve the network coding security and the source coding efficiency.Secondly,an anti-inter-generation pollution security network coding scheme based on homomorphic signatures is proposed.Compared with the previous idea of inter-generational security network coding,a globalized encryption key is used.This scheme uses generation identifiers to randomize local keys.On the premise of ensuring security,the source coding efficiency and verification efficiency of non-source nodes are improved to some extent.Finally,an anti-universal safety network coding scheme based on hash function is analyzed,and its deficiency is pointed out.Combining anti-pollution mechanism and encryption algorithm based on homomorphic message authentication,an anti-pollution and anti-eavesdropping method is proposed.Compared with the anti-universal safety network coding scheme based on the hash function,the greatest advantage of this solution is that it can perform data packet security verification at the intermediate node and can directly discard contaminated data packets.This will not only greatly increase the throughput of the entire network as the code does not involve manymodular exponentiation operations,but also improve the utilization of network resources in the case of a small increase in the amount of calculation,...