Experimental aspects of secret key generation in indoor wireless environments

This paper proposes a proof-of-principle design of a secret key generation system along with the desirable secrecy analysis to guarantee information-theoretic security. We conduct physical experiments on programmable radios in an indoor environment to analyze the statistical characteristics of the induced source that we employ to generate secret keys. We also provide a generic security analysis of the system, and we give an estimate of the achievable secret key rates for a target information leakage in the finite block-length regime.