Title :
Secret-Key Distribution Based on Bounded Observability
Author :
Muramatsu, Jun ; Yoshimura, Kazuyuki ; Davis, Peter ; Uchida, Atsushi ; Harayama, Takahisa
Author_Institution :
NTT Commun. Sci. Labs., NTT Corp., Kyoto, Japan
Abstract :
This paper reviews an approach to secret-key distribution based on the bounded observability (BO) model. First, the information-theoretic framework of secret-key agreement from a correlated random source is reviewed. Next, the BO model is introduced. In the context of this model, the BO condition is presented as a necessary and sufficient condition for the possibility of secret-key distribution. This condition describes limits on the information obtained by observation of a random object, and models the practical difficulty of completely observing random physical phenomena. Finally, an implementation of secret-key distribution based on BO in an optical fiber system is described.
Keywords :
observability; optical fibre networks; private key cryptography; telecommunication security; BO model; bounded observability; information theoretic framework; optical fiber system; random object observation; secret key distribution; Channel models; Communication system security; Observability; Physical layer; Protocols; Random sequences; Security; Telecommunication services; Wireless communication; Bounded observability (BO); correlated randomness in optical devices; information-theoretic security; secret key agreement; secret-key agreement; secret-key distribution;
Journal_Title :
Proceedings of the IEEE
DOI :
10.1109/JPROC.2015.2462837
