Li, KaiKurunathan, HarrisonSeverino, RicardoTovar, EduardoTovar2018-11-292018-11-292018http://hdl.handle.net/10400.22/12313Poster presented in Work in Progress Session, ACM/IEEE International Conference on Cyber-Physical Systems (ICCPS 2018). 10 to 13, Apr, 2018. Porto, Portugal.Securing wireless communication is significant for privacy and confidentiality of sensing data in CyberPhysical Systems (CPS). However, due to broadcast nature of radio channels, disseminating sensory data is vulnerable to eavesdropping and message modification. Generating secret keys by extracting the shared randomness in a wireless fading channel is a promising way to improve the communication security. In this poster, we present a novel secret key generation protocol for securing real-time data dissemination in CPS, where the sensor nodes cooperatively generate a shared key by estimating the quantized fading channel randomness. A 2- hop wireless sensor network testbed is built and preliminary experimental results show that the quantization intervals and distance between the nodes lead to a secret bit mismatch.engData disseminationCyber-Physical SystemsWireless securityExperimental evaluationother