Improved Confidentiality for Data Transfer in Wireless Sensor Networks

A wireless sensor network consists of sensors which sense data from their surroundings and communicates it to the base station. During this transfer, the data is subject to a number of attacks that may endanger its confidentiality, which can be overcome by using encryption. In order to protect data from every sensor independently, the key used for encryption may be changed before moving to the next sensor. This paper presents a scenario that can tackle the case where the key after being shifted circularly remains the same. As a result, the same key is applied to the subsequent sensor. This paper develops an algorithm that manipulates the bits to obtain a new value for the key. The results prove that the use of this algorithm does not reduce the performance of the security model.