NDLI: End-to-end secure multi-hop communication with untrusted relays is possible

Content Provider	IEEE Xplore Digital Library
Author	Xiang He Yener, A.
Copyright Year	2008
Description	Author affiliation: Electr. Eng. Dept., Pennsylvania State Univ., University Park, PA (Xiang He; Yener, A.)
Abstract	We consider a source-destination pair that can communicate only through a chain of unauthenticated intermediate relay nodes over AWGN links. In this scenario, it is desirable to use these relays-as otherwise communicating with the destination is impossible-without the relays being able to decode the information flowing through them. This in turn is tantamount to treating the relays as eavesdroppers from whom the information needs to be kept secret. An important question then becomes that of identifying the limits of reliable and secure communication in this network in the information theoretic sense. In particular, we ask whether it is possible to achieve a non-vanishing perfect secrecy rate regardless of the number of hops. In this work, we find that the answer is yes and show that a constant secrecy rate for an arbitrary number of hops is achievable by employing the combination of a lattice code and a random code.
Starting Page	681
Ending Page	685
File Size	227003
Page Count	5
File Format	PDF
ISBN	9781424429400
ISSN	10586393
DOI	10.1109/ACSSC.2008.5074494
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spread spectrum communication Relays Lattices Information security Wireless communication Decoding Broadcasting Interference Jamming Noise level
Content Type	Text
Resource Type	Article
Subject	Signal Processing Computer Networks and Communications

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