iDispatcher: A unified platform for secure planet-scale information dissemination

摘要: Traditional software and security patch update delivery mechanisms rely on a client/server approach where clients pull updates from servers regularly. This approach, however, suffers high window of vulnerability (WOV) for the risk single point failure. Overlay-based information dissemination schemes overcome these problems, but often incur infrastructure cost to set up maintain individual networks. Against this backdrop, we propose iDispatcher, planet-scale, flexible secure platform. iDispatcher uses hybrid with both push- pull-based reduce WOV period achieve distribution coverage. also peer-to-peer based architecture higher scalability. We develop self-contained key management mechanism iDispatcher. Our prototype is deployed more than 500 PlanetLab nodes distributed around world. Experimental results show that can have small latency time-critical applications, highly tunable optimize tradeoff between bandwidth latency, works resiliently against different attacks such as flooding attacks.