Abstract

Due to wide application of the wireless sensor network (WSN), the WSN security problems have become very critical. In broadcast authentication mechanisms, the traditional protocols are confronted with large challenges. Because they are not suitable for the WSN systems which have low computational power and limited memory size. To get an efficient broadcast authentication protocol, the traditional μTESLA and multi-level μTESLA are utilized and studied. The problems of these protocols are pointed out. Then E-μTESLA is presented on the basis of 2-level μTESLA. At the end, the performances of E-μTESLA are compared with m-level E-μTESLA. The comparison results show that E-μTESLA is more efficient in less computational power, and less storage memory than those of m-level E-μTESLA.

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