The increased Internet utilization leads to emerging group-basedapplications such as military, healthcare, online collaboration, video conferencing and so. However, in the group-oriented application resources are secured through a constraint network. The promising multi-cast communication group-oriented communication model exhibits reduced bandwidth with the different decentralized group key management such as the decentralized group key framework. In this paper, proposed a Multicast Polynomial Key Distribution Scheme (MPKD)model with acentralized and decentralized key management framework. The proposed MPKD model comprises of the three process such as generation of key, distribution of key and refreshment of key. The proposed MPKD mode uses the logical key tree structure with the computation of the polynomial in the key generation process. The performance analysis is based on the structure protocol with the key distribution in the centralized framework model. The performance of the proposed MPKD model is comparatively examined with the conventional OFT, SKD and MUKD model. The analysis of the results expressed that proposed model ~2% - 4% reduces the communication and storage cost. The storage cost of the existing model exhibits the value of maximal 63 but the proposed MPKD model achieves 34 for the user count of 32. Similarly, the communication and storage cost is minimal for the unicast and multicast communication