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In this paper, we propose a wormhole attack resistant secure neighbor discovery scheme, named SND, for 60 GHz directional wireless network with a centralized network controller (NC). In specific, the proposed SND scheme consists of three phases: the NC broadcasting phase, the network node response/authentication phase and the NC time-delay analysis phase. In the broadcasting phase and response/authentication...
The increasing demands for improving transmission reliability and efficiency have brought us a wide interest in smart grid. In current smart grid research, one of challenges is its security issue. If the security is not well addressed, the concept of smart grid cannot be widely accepted. In this paper, in order to simultaneously resolve the security and efficiency challenges in smart grid communications,...
Opportunistic network (OPPNET) is characterized by the intermittent connectivity among mobile nodes from their unpredictable mobility. Although it is promising, there still exist many security and privacy challenges. In this paper, we present an incentive and privacy-aware data dissemination (IPAD) scheme for OPPNETs, not only to exploit how to protect mobile node's identity privacy, location privacy...
Without direct path, information delivery in sparse delay tolerant networks (DTNs) typically relies on intermittent relays, making the transmission not only unreliable but also time consuming. To make the matter even worse, the source nodes may transmit some encrypted “junk” information, similar as the spam emails in current mail systems, to the destinations; without effective control, the delivery...
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