A Study of Key Distribution Protocols in Wireless Sensor Networks

• Main Authors: Hsing-Lei Wang, 王興蕾
• Other Authors: 林詠章
• Format: Others
• Language: en_US
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/92977314095461112575

碩士 === 國立中興大學 === 資訊管理學系所 === 99 === Recently, with the development of the technology, the applications of the wireless sensor networks are getting very common in our life. In order to enhance the security of the wireless sensor network, there are many key distribution protocols have been proposed recently. Among those key distribution protocols in wireless sensor networks, the key pre-distribution protocol is a more effective and more practical method. It enables sensor nodes to communicate with each other by less communication and computation overheads; it will effectively save the energy of the sensor node and extend the lifetime of the networks. In this thesis, we propose two new key pre-distribution schemes based on the basic probabilistic key pre-distribution protocol with grid-based deployment. In our first proposed scheme, the keys with a hidden information will pre-distributed to the sensor nodes so they can establish the pair-wise key more effectively. On the other hand, our second proposed scheme will use the reusable key pools in order to enhance the security and reduce the communication overhead of the wireless sensor networks. The performance analysis shows that the proposed schemes can provide better connectivity and lower memory overhead for the wireless sensor networks. The DSN designer also can adjust the variables of the sensor networks to produce an appropriate performance for the requirement of the application.