… We classify proposed wireless sensor network key management schemes … : shared key
discovery and key establishment. In shared key discovery, two sensors try to find a common key. …

… may seem advantageous, the main drawback is that compromise of a single node causes
the compromise of the entire network through the shared key. This scheme counters several …

… However, it is not easy to establish a shared secret key in advance and it does not support
… interface without the need for key pre-distribution and pairwise key sharing. It is known that …

… For secure communication, neighbors must possess a secret common key or there must exist
a key-path among these nodes. In this paper I have discussed in brief about various key pre…

… • We review the main state of the art of symmetric key management schemes for WSNs that
we … , we propose to compute the pairwise secret key as the hash of all their common keys …

… Moreover, use of a single shared key in whole WSN is not a good idea because an
adversary can easily obtain the key. Thus, sensor nodes have to adapt their environments, and …

… We first review the three key pre-distribution schemes for sensor networks [10, 8, 6] that we
… probability that two neighboring nodes share a common key or key information, which we call …

… Several papers survey key management schemes in WSNs [18]… no review paper considers
key management schemes in WSNs … if there is a common shared key. If a sensor node finds a …

… In this paper, we provide a survey of key management schemes in wireless sensor networks…
Any two nodes able to find at least one common key can use that key as their shared secret …

… In this paper, we review dynamic key management systems in wireless sensor networks …
This method guarantees that two communicating nodes shares at least one common key. …