Optimizing Improved Secure and Distributed Reprogramming Protocol for Wireless Sensor Network

摘要

Wireless reprogramming for a wireless sensor network is the process of uploading new code or changing the functionality of existing code. For security reasons, every code update must be authenticated to prevent an adversary from installing malicious code in the network. All existing reprogramming protocols are based on the centralized approach in which only the base station has the authority to initiate reprogramming. However, it is desirable and sometimes necessary for multiple authorized network users to simultaneously and directly reprogram sensor nodes without involving the base station, which is referred to as distributed reprogramming. In exiting the network owner can also assign different reprogramming privileges to different users by using a secure and distributed reprogramming protocol named SDRP. Here identify an inherent design weakness in the user pre-processing phase of SDRP that is any authorized user to carry out reprogramming But it have to use identity-based cryptography to secure the reprogramming and to reduce the communication and storage requirements of each node. And latter adding 1-B redundant data to eliminate this design weakness. But it is also not reduce design weakness much more better ,so we proposed new improved SDRP to achieve the better security and efficiency of SDRP by increasing the redundant data to 4-B. And finally the results demonstrate the efficiency improvement over the original SDRP.