Multi-source network coding allows intermediate nodes to linearly combine packets from multiple sources, but it is vulnerable to pollution attacks which can cause multiple down- stream data to be polluted. To solve th...Multi-source network coding allows intermediate nodes to linearly combine packets from multiple sources, but it is vulnerable to pollution attacks which can cause multiple down- stream data to be polluted. To solve this problem, we take advan- tage of lattice signature and homomorphic property to build a se- cure multi-source network coding scheme. By means of the lattice basis delegation algorithms, our scheme can generate a public lattice for all source nodes and the homomorphic signatures can be calculated on this lattice. Consequently, the multi-source signature problem can be transformed into single-source signature problem only if all source nodes are considered as a whole. Scheme analy- sis shows the correctness and homomorphic property of the pro- posed scheme.展开更多
基金Supported by the National Natural Science Foundation of China(61571024,61272501)the National Basic Research Program of China(2012CB315905)the Research Promotion Grants-in-Aid for KUT Graduates of Special Scholarship Program and the Fundamental Research Funds for Central Universities(YWF15GJSYS059)
文摘Multi-source network coding allows intermediate nodes to linearly combine packets from multiple sources, but it is vulnerable to pollution attacks which can cause multiple down- stream data to be polluted. To solve this problem, we take advan- tage of lattice signature and homomorphic property to build a se- cure multi-source network coding scheme. By means of the lattice basis delegation algorithms, our scheme can generate a public lattice for all source nodes and the homomorphic signatures can be calculated on this lattice. Consequently, the multi-source signature problem can be transformed into single-source signature problem only if all source nodes are considered as a whole. Scheme analy- sis shows the correctness and homomorphic property of the pro- posed scheme.
