MIS: Malicious Nodes Identification Scheme in Network-coding-based Peer-to-Peer Streaming

Wang, Q., Vu, L., Nahrstedt, K., Khurana, H.
Citation:

IEEE International Conference on Computer Communications (INFOCOM), pp.1,5, 14-19 March 2010.

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Abstract:

Network coding has been shown to be capable of greatly improving quality of service in P2P live streaming systems (e.g., IPTV). However, network coding is vulnerable to pollution attacks where malicious nodes inject into the network bogus data blocks that are combined with other legitimate blocks at downstream nodes, leading to incapability of decoding the original blocks and substantial degradation of network performance. In this paper, we propose a novel approach to limiting pollution attacks by rapidly identifying malicious nodes. Our scheme can fully satisfy the requirements of live streaming systems, and achieves much higher efficiency than previous schemes. Each node in our scheme only needs to perform several hash computations for an incoming block, incurring very small computational latency. The space overhead added to each block is only 20 bytes. The verification information given to each node is independent of the streaming content and thus does not need to be redistributed. The simulation results based on real PPLive channel overlays show that the process of identifying malicious nodes only takes a few seconds even in the presence of a large number of malicious nodes.

Publication Status:
Published
Publication Type:
Proceedings
Publication Date:
03/14/2010
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