Secure checkpointing-recovery using trusted nodes in MANET

In this work, we propose a trust based secure checkpointing and recovery technique in Mobile Adhoc Network (MANET). In resource constrained MANET, ensuring secure checkpointing using cryptography increases overhead and consumption of resources. Hence additional overhead of secure checkpointing should be minimized. Here proposed trust model is combined with the technique of encryption for secure checkpointing. Using proposed trust model, if a Mobile Host (MH) is found to be trusted, checkpoint in it is secure hence encryption of checkpoint is not required. Simulation results show that checkpoint encryption in the proposed technique may not be required at all in some cases, if the said checkpoint could be forwarded to the recovery destination via trusted MHs only. Performance analysis and comparison of proposed trust based secure checkpointing with existing secure checkpointing technique is also presented.

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