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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