CRYPTO '97 Proceedings of the 17th Annual International Cryptology Conference on Advances in Cryptology
Efficient Authentication and Signing of Multicast Streams over Lossy Channels
SP '00 Proceedings of the 2000 IEEE Symposium on Security and Privacy
Bullet: high bandwidth data dissemination using an overlay mesh
SOSP '03 Proceedings of the nineteenth ACM symposium on Operating systems principles
Is high-quality vod feasible using P2P swarming?
Proceedings of the 16th international conference on World Wide Web
Can internet video-on-demand be profitable?
Proceedings of the 2007 conference on Applications, technologies, architectures, and protocols for computer communications
The pollution attack in P2P live video streaming: measurement results and defenses
Proceedings of the 2007 workshop on Peer-to-peer streaming and IP-TV
Enabling DVD-like features in P2P video-on-demand systems
Proceedings of the 2007 workshop on Peer-to-peer streaming and IP-TV
Peer assisted VoD for set-top box based IP network
Proceedings of the 2007 workshop on Peer-to-peer streaming and IP-TV
Enforcing Data Integrity in Very Large Ad Hoc Networks
MDM '07 Proceedings of the 2007 International Conference on Mobile Data Management
Ensuring content integrity for untrusted peer-to-peer content distribution networks
NSDI'07 Proceedings of the 4th USENIX conference on Networked systems design & implementation
Chainsaw: eliminating trees from overlay multicast
IPTPS'05 Proceedings of the 4th international conference on Peer-to-Peer Systems
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The use of peer-to-peer (P2P) mechanisms for content delivery is attractive to content and service providers alike. P2P data transfers offload the demand on servers and reduce the bandwidth requirements, with corresponding benefits of improved scalability and performance. This, however, poses interesting challenges in ensuring content integrity. Peers may be malicious and attempt to send corrupt and/or inappropriate content to disrupt the service. Consequently, service providers must provide clients with the capability to validate the integrity of content delivered from peers. This goal is particularly challenging in the context of streaming video because the content needs to be validated in real time. A practical solution must provide high integrity assurance while incurring low communication and computation overhead. In this paper, we present a packet-based validation approach for ensuring the integrity of data obtained from peers. Our proposed scheme randomly selects packets and validates their correctness. Through detailed experiments, we show that this mechanism is not only lightweight but is also able to detect content corruption with very high probability, thus protecting the viewing experience and the provider's content delivery service.