No abstract

By allowing intermediate nodes to encode the received packets before sending them out, network coding improves the capacity and robustness of multicast applications. But it is vulnerable to the pollution attacks. Some signature schemes were proposed to thwart such attacks, but most of them need to be homomorphic that the keys cannot be generated and managed easily. In this paper, we propose a novel fast and secure switch network coding multicast (SSNC) on the software defined networks (SDN). In our scheme, the complicated secure multicast management was separated from the fast data transmission based on the SDN. Multiple multicasts will be aggregated to one multicast group according to the requirements of services and the network status. Then, the controller will route aggregated multicast group with network coding; only the trusted switch will be allowed to join the network coding by using broadcast encryption. The proposed scheme can use the traditional cryptography without homomorphy, which greatly reduces the complexity of the computation and improves the efficiency of transmission.

Multicast is widely applied in cloud data centers. Because intermediate nodes can encode the packets, network coding improves the capacity and robustness of multicast applications. However, this system is vulnerable to pollution attacks. Existing schemes mainly focus on homomorphic cryptographic technologies against such attacks. However, the homomorphic cryptographic technology introduces complicated key management and calculation and storage overhead. This paper proposes a novel, fast, and secure network-coding multicast on software-defined networks. This scheme separates the complicated secure multicast management from fast data transmission. In the control layer, when users and switches try to join the secure multicast, they are authenticated and authorized by the controller. Only trusted nodes can join the forwarding paths. In the data layer, the trusted nodes only forward the data. The proposed scheme can use traditional cryptography without homomorphy; thus, it greatly reduces computation complexity, improves transmission efficiency, and thwarts pollution and eavesdropping attacks.

No abstract

To increase the security of multicast, a Random Tree Multicast (RTM)