Reducing ìTESLA memory requirements

This paper addresses secure broadcast in wireless sensor networks (WSN). We introduce new set of security protocols for broadcast operation, providing enhancements over the current set of security protocols. We introduce two protocols as an enhancement for muTESLA protocol. In these protocols we focuses on reducing the memory requirements for the broadcast session while maintain the same security level. The first protocol, Low Buffer muTESLA (LB- muTESLA), achieves 88% reduction in the node buffer size comparing to the original muTESLA protocol. The second protocol, Reversed MAC muTESLA (RM- muTESLA), achieves 92% reduction in the node buffer size comparing to the original muTESLA protocol. This reduction enables longer session´s duration and reduces the memory requirement.