Abstract
We consider the problem of secure content distribution in multihop mobile ad hoc networks (MANETs), where a source disseminates data to a group of receivers. To ensure an efficient utilization of the network resources, multicast routing is the natural choice to be used at the network level. Although several multicast routing protocols have been proposed [1, 2], their security has only been explored under outsider attacks [3, 4] or under limited insider attacks [5]. Due to the lack of physical security and the susceptibility of devices to theft, it is necessary to design protocols resilient to both outsider and insider attacks.
