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IPsec-Protected Transport of HDTV over IP

By P. Bellows, J. Flidr, L. Gharai, C. Perkins, P. Chodowiec and K. Gaj

Abstract

Bandwidth-intensive applications compete directly with the operating system's network stack for CPU cycles. This is particularly true when the stack performs security protocols such as IPsec; the additional load of complex cryptographic transforms overwhelms modern CPUs when data rates exceed 100 Mbps. This paper describes a network-processing accelerator which overcomes these bottlenecks by offloading packet processing and cryptographic transforms to an intelligent interface card. The system achieves sustained 1 Gbps host-to-host bandwidth of encrypted IPsec traffic on commodity CPUs and networks. It appears to the application developer as a normal network interface, because the hardware acceleration is transparent to the user. The system is highly programmable and can support a variety of offload functions. A sample application is described, wherein production-quality HDTV is transported over IP at nearly 900 Mbps, fully secured using IPsec with AES encryption

Publisher: 'Springer Science and Business Media LLC'
Year: 2005
DOI identifier: 10.1007/1-4020-3128-9_15
OAI identifier: oai:eprints.gla.ac.uk:43152
Provided by: Enlighten
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