Abstract

Key distribution is an essential element in cryptography. In this paper, the framework of a classical key agreement protocol using band-limited random signals and feedback is presented. The secrecy is derived from masking information by privately held random signals. Critical parameters of the protocol are identified. Raw performance of the system is presented. The secrecy can be enhanced by taking advantages of measures, such as reconciliation and privacy amplification, developed for classical and quantum key agreement protocols.

© 2009 IEEE

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