Security for Multihop Wireless Networks

162  ◾  Security for Multihop Wireless Networks

contrast, public key-based schemes have simple and adapted key management, but

they are more complex to execute and thus consume more time.

e predistribution of symmetric or asymmetric keys is currently used almost

widespread. It tries to replace the vacuum created by the absence of public key

infrastructures in WSN. Other concepts to overcome the absence of certificate

exist, such as the identity-based cryptography (IBC) [29], where every node in the

network is able to compute the public key of another node based on the iden-

tity of that node. is method is used by [30], where authors proposed TinyPBC

and showed that their implementation is less time-consuming and more optimized

than that of [ ...