Encryption and Key Exchange in Wireless Sensor Networks
نویسنده
چکیده
Encryption and key distribution are important primitives to build secure Wireless Sensor Networks (WSN). Different block ciphers were proposed in literature to provide encryption in resource constraint distributed networks. A large amount of different key distribution schemes were implemented, targeting different types of WSNs. These schemes face issues with respect to their requirements, implementations, and theoretic foundations. In this paper we provide an overview of selected encryption schemes and introduce so called fault attacks targeting hardware implementations of block ciphers. Selected key pre-distribution schemes, like random key predistribution and hierarchical key distribution, are presented and depicted. Memory efficient Elliptic Curve Cryptography (ECC) introduces feasible public key cryptography schemes for WSNs. A summary of selected ECC based schemes is given with a focus on Identity Based Encryption (IBE), which is especially useful in scenarios with a trusted sink node.
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