Buttyan, LeventeHubaux, Jean-Pierre2004-08-312004-08-312004-08-312000https://infoscience.epfl.ch/handle/20.500.14299/144503In this paper, we address the problem of service availability in mobile ad-hoc WANs. We present a secure mechanism to stimulate end users to keep their devices turned on, to refrain from overloading the network, and to thwart tampering aimed at converting the device into a ``selfish`` one. Our solution is based on the application of a tamper resistant security module in each device and cryptographic protection of messages.wirelessmobilead-hoc networkwide area networkTerminodesincentive to co-operateterminode beanstext::report