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New techniques for localization based information theoretic secret key agreement

Kazempour, N ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1109/ISCISC.2017.8488372
  3. Abstract:
  4. We consider a source model for information theoretic secret key agreement based on the distance among the nodes, in a basic system consisting of two legitimate users and an eavesdropper. The legitimate nodes try to agree on a reliable and secure key based on their noisy observation of distance between them. We propose two methods to enhance system utility: 1) Artificial Noise Forwarding (ANF), 2) transmission in different beam directions (multi-antenna transmission). In the first method artificial noise is used to worsen e a vesdropper's distance estimation and in the second method beacon signals are sent in different directions and the virtual distances in different beam directions are used as the randomness sources. We show that if eavesdropper is not equipped with multi-directional antenna, then ANF is a useful method while in the case of users equipped with multi-directional antenna, transmitting in different directions is a suitable way to increase the secret key rate. © 2017 IEEE
  5. Keywords:
  6. Chromium compounds ; Directive antennas ; Information theory ; Network security ; Artificial noise ; Directional antenna ; Distance estimation ; Legitimate users ; Multi-antenna transmission ; Noisy observations ; Secret key agreement ; Source modeling ; Cryptography
  7. Source: 2017 14th International ISC (Iranian Society of Cryptology) Conference on Information Security and Cryptology, ISCISC 2017, 6 September 2017 through 7 September 2017 ; 2018 , Pages 70-76 ; 9781538665602 (ISBN)
  8. URL: https://ieeexplore.ieee.org/document/8488372