摘要：In todays arena, multicasting technique plays a vital role in digital communication which has to be made secure with high resistance from middleman attacks. The proposed one is an economic way of generating an optimal number of keys with maximum utility in a sensor network rather than using a single key for each member. However the problem lies in generating the key management system which has a single common key for all the members of a virtual group that are essential for secure communication and should possess availability and least redundancy. This common key which is proposed as ViPKey can be shared among the members of a virtual group with polynomial clustering expression, thereby making it simpler to achieve efficient data transmission instead of using a separate key for each individual member of that group. Thus, proposed ViPKey management system enables least amount of keys involving in a single group and has reduced rekeying and updating process during inclusion or exclusion of members inside a virtual group among the neighbors of sensor network. The accuracy in terms of competence statistically with network simulator NS-2 version 2.26 that offers support for simulating a variety of protocol suites.
