A CRT-based Key Management Scheme for Wireless Sensor Networks

• Main Authors: Po-Wen Chi, 紀博文
• Other Authors: Chin-Laung Lei
• Format: Others
• Language: en_US
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/09768909686195911723

碩士 === 國立臺灣大學 === 電機工程學研究所 === 93 === To achieve security in wireless sensor networks, key management scheme is a very important issue. Key management includes both key agreement and key updating. Due to resource constraints of wireless sensor node, key management in wireless sensor networks is nontrivial. Many key management schemes in general wired networks are not suitable for wireless sensor networks. Recently, many schemes are proposed to do key agreement or key updating in efficient ways. In this thesis, we propose a complete key management scheme that can handle both key agreement and key updating. Our scheme can deal with both group key and pairwise key, which are the same important for wireless sensor networks. Our scheme can update both of them. The key server can create announcements containing updating information according to CRT algorithm and broadcast these announcement. Each legal sensor node can derive updating information and update key information easily. Therefore, the life time of our system is longer than previous key management schemes.