Can You Help Me Run These Code Segments on Your Mobile Device?

The proliferation of mobile devices, coupled by the increase in their capabilities, have enabled the establishment of a rich mobile computing platform for various applications. In this paper we propose a probabilistic code distribution model that enables a mobile device to execute code segments through the help of nearby mobile devices in a secure and resilient manner. The model relies on randomization and replication techniques against unhelpful devices that do not execute their assigned code segments and malicious ones that try to reveal the overall application. We derive bounds to ensure the success of our scheme with a very high probability. Simulation and implementation experiments using MICAz sensors are conducted to validate our model and study the performance of our scheme.