| Distributed Sensor Networks (DSN) are ad-hoc networks consisting of sensor nodes with limited computational and communication capabilities, and limited power supply. They are often deployed in hostile environments for monitoring and data collection purposes, where node capture by non-friendly elements is a possibility. In order to protect the network from eavesdropping from either active or passive attacks, cryptography is used to secure communications in the network. One of the issues when using cryptography is the distribution of keys. For DSNs, Key Pre-distribution Schemes (KPS) are the preferred technique for distributing keys to sensor nodes. Thesis contains a survey of existing KPSs in DSNs. In addition, I studied the product construction as a methodology for generating new KPS from existing ones. In particular, I will propose the mu-CID Blom's schemes. The proposed scheme achieves enhanced security in terms of the resiliency against node capture. |
