Abstract:

LAMA (Lightweight Approach to Multicast Authentication) was proposed based on MAC （Message Authentication Codes） and group key managements of WSN (Wireless Sensor Networks). Comparison of the performance with those of other schemes shows both computation and communication overheads of LAMA are in reasonable scopes, so it is secure and efficient to WSN.

Key words: wireless sensor networks(WSN), multicast, source authentication, message authentication codes