The Wireless Sensor Network (WSN) is one of the core technologies to form the future networks. As WSN consisting of several sink nodes and sensor nodes, while it have many advantages, such as the compact size and the low cost, corresponding constraints on resources can result. The greatest challenge among all is that distinguishing and revoking compromised sensors. Traditional techniques are used for keys pre-distributed among the sinks and sensors for pair wise key establishment and authentication. But this is not that much effective to provide authentication and due to this reason nodes are compromised. To overcome above mentioned problem, new framework was designed. The basic work in it is that to allow a three-tier general framework, use of any pair wise key pre-distribution scheme. The scheme requires two separate polynomial pools: the mobile polynomial pool and the static polynomial pool. Keys from this pool are used to strengthened the authentication mechanism between sink and node. For enhancing this, one way chain applied on pre-distributed password. This process has low computational cost and will increase the network resilience. In this process, there is possibility of actual data compromise and sink will not get requested data. Thereby employed, message digests to achieve data integrity by applying complex math on data to ensure that this data has not been tampered with on route to its final destination. Through detailed analysis, we will show that integrity of whole framework improves and assures the accuracy and consistency of data over its entire lifecycle.

ZigBee is the most powerful standard for wireless sensor network.Pre-emptive Distributed Address Assignment (PDAA) Mechanism used to improves Zig-Bee address assignment and PDAA Mechanism Presents an auto-routing mechanism which doesn't store any information into routing table. There are two types of devices such as router and end device. But in ZigBee & PDAA mechanism has a problem that there is parent & child relationship i.e. packet follow Tree topology to forward the packet from source to destination and second problem is address reuse mechanism.So, This Paper Proposes a Hybrid routing scheme to reduce the routing cost by using the neighbor table that is originally defined in the ZigBee standard and Provide address reuse facility. In ZigBee and PDAA mechanism address reuse facility is a main issue so by using AODV routing protocol is used to provide address reuse facility.

ZigBee is the most powerful standard for wireless sensor network.Pre-emptive Distributed Address Assignment (PDAA) Mechanism used to improves Zig-Bee address assignment and PDAA Mechanism Presents an auto-routing mechanism which doesn't store any information into routing table. There are two types of devices such as router and end device. But in ZigBee & PDAA mechanism has a problem that there is parent & child relationship i.e. packet follow Tree topology to forward the packet from source to destination and second problem is address reuse mechanism.So, This Paper Proposes a Hybrid routing scheme to reduce the routing cost by using the neighbor table that is originally defined in the ZigBee standard and Provide address reuse facility. In ZigBee and PDAA mechanism address reuse facility is a main issue so by using AODV routing protocol is used to provide address reuse facility.

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