METHOD AND SYSTEM OF DISTRIBUTING GROUP KEY USING BROADCASTING MESSAGE AUTHENTICATION ON WIRELESS SENSOR NETWORK AND RECORDING MEDIUM USING THIS

摘要

PURPOSE: A method for distributing a group key through broadcasting message authentication in a wireless sensor network, a system for the same, and a recording medium which records the method are provided to immediately authenticate a broadcasting message of each transmission session of the broadcasting message, thereby preventing unjust modification of a disuse node list by a third party. CONSTITUTION: A description message is broadcasted to multiple nodes(S210). A base station transmits the broadcasting message to a wireless sensor network(S220). In a valid node, return value of hash operation is similar to root value encryption key of a previous session is determined(S230). According to the comparison result, the broadcasting message is authenticated(S240). By local cooperation between the valid node and neighbor node, a group key is generated(S250).