  As the utilization of sensor networks continue to increase, the importance of
security becomes more profound. Many industries depend on sensor networks for
critical tasks, and a malicious entity can potentially cause catastrophic
damage. We propose a new key exchange trust evaluation for peer-to-peer sensor
networks, where part of the network has unconditionally secure key exchange.
For a given sensor, the higher the portion of channels with unconditionally
secure key exchange the higher the trust value. We give a brief introduction to
unconditionally secured key exchange concepts and mention current trust
measures in sensor networks. We demonstrate the new key exchange trust measure
on a hypothetical sensor network using both wired and wireless communication
channels.
