A pairwise key pre-distribution scheme for wireless sensor networks

To achieve security in wireless sensor networks, it is important to be able to encrypt and authenticate messages sent among sensor nodes. Keys for encryption and authentication purposes must be agreed upon by communicating nodes. Due to resource constraints, achieving such key agreement in wireless sensor networks is nontrivial. Many key agreement schemes used in general networks, such as Diffie-Hellman and public-key based schemes, are not suitable for wireless sensor networks. Pre-distribution of secret keys for all pairs of nodes is not viable due to the large amount of memory used when the network size is large. To solve the key predistribution problem, two elegant key pre-distribution approaches have been proposed recently [11, 7]. In this paper, we propose a new key pre-distribution scheme, which substantially improves the resilience of the network compared to the existing schemes. Our scheme exhibits a nice threshold property: when the number of compromised nodes is less than ...

• Type: Conference
• Year: 2003
• Where: CCS
• Authors: Wenliang Du, Jing Deng, Yunghsiang S. Han, Pramod K. Varshney
• Keywords: CCS 2003, Key Agreement, Security Privacy, Sensor Nodes, Wireless Sensor Networks