Public-Key Cryptography in Sensor Networks

E.D. Manley, J.S. Deogun, and H. Al Nahas (USA)


sensor network, wireless, security, public-key


Interest in using public-key cryptography for securing sen sor networks is increasing. While the computational de mands of many public-key algorithms has ruled out their use in sensor networks, recent studies have shown that some public-key algorithms can be efficiently implemented on certain sensor nodes. However the use of public-key cryptography in distributed sensor networks presents au thentication problems. Without addressing these issues, the network is open to attack by imposter nodes. We present a hybrid scheme that uses shared secrets, preloaded on nodes with a random key pre-distribution scheme, to allow for node-to-node authentication so that trust may be verified before setting up cryptographic keys with public-key meth ods.

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