Abstract
Physical layer security has become the cornerstone of the wireless communication system. Key generation by channel estimation enables legitimate users to generate keys in a decentralised manner than sharing secret information in open wireless mediums. In this paper we propose secrecy evaluation of symmetric keys which are, generated by channel metrics estimated over the Rayleigh fading channel, encrypted and transmitted over a fading channel in the presence of an eavesdropper. The results are obtained in terms of secrecy capacity and outage probability for various key sizes, different position of eavesdroppers from the source. It is seen that as key size increases and distance of eavesdropper increases from the source the secrecy capacity increases. Also the performance of keys derrived from various channel metrics such as complex channel path gains, EVM rms and complex phase difference are discussed in this paper.
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Srividya, L., Sudha, P.N. (2020). Secrecy Capacity of Symmetric Keys Generated by Quantising Channel Metrics Over a Fading Channel. In: Smys, S., Bestak, R., Rocha, Á. (eds) Inventive Computation Technologies. ICICIT 2019. Lecture Notes in Networks and Systems, vol 98. Springer, Cham. https://doi.org/10.1007/978-3-030-33846-6_45
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DOI: https://doi.org/10.1007/978-3-030-33846-6_45
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