Advanced search
1 file | 698.72 KB

Encrypted body-to-body wireless sensor node employing channel-state-based key generation

Patrick Van Torre (UGent) , Thijs Castel (UGent) and Hendrik Rogier (UGent)
Author
Organization
Abstract
In this paper, experimental results are presented for an encrypted wireless link between two body-worn sensor nodes fully integrated onto textile antenna platforms. Wireless communication between two persons walking in an indoor environment occurs over a unique physical propagation channel. For the purpose of data encryption, channel measurements are performed at both sides of the link, providing highly correlated pseudo random number sequences, with envelope correlation coefficients always above 0.7. Signals captured by an eavesdropper are substantially decorrelated, with correlation coefficients always below 0.15, and are therefore not suitable for key extraction. The mutual information is also determined, providing extra insight into the key generating potential of the pseudo random sequences. Practical error free secret key generation on both sides of the link, with reconciliation by means of Hamming check bits, is performed successfully in all cases between legitimate parties. At the same time, an eavesdropper is unable to extract the secret key from measured signals, as confirmed by the key error rates, which are calculated for all possible signal combinations, resulting in a key error rate after reconciliation around 0.5 for most eavesdropper channels and remaining at least 0.3 in the worst-case scenario.
Keywords
Key Generation, Encryption, Channel-State Information, Body-Centric, Textile Antenna, IBCN, Reconciliation

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 698.72 KB

Citation

Please use this url to cite or link to this publication:

Chicago
Van Torre, Patrick, Thijs Castel, and Hendrik Rogier. 2016. “Encrypted Body-to-body Wireless Sensor Node Employing Channel-state-based Key Generation.” In 2016 10TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP) , 1–5. IEEE.
APA
Van Torre, P., Castel, T., & Rogier, H. (2016). Encrypted body-to-body wireless sensor node employing channel-state-based key generation. 2016 10TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP) (pp. 1–5). Presented at the 10th European Conference on Antennas and Propagation (EuCAP) , IEEE.
Vancouver
1.
Van Torre P, Castel T, Rogier H. Encrypted body-to-body wireless sensor node employing channel-state-based key generation. 2016 10TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP) . IEEE; 2016. p. 1–5.
MLA
Van Torre, Patrick, Thijs Castel, and Hendrik Rogier. “Encrypted Body-to-body Wireless Sensor Node Employing Channel-state-based Key Generation.” 2016 10TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP) . IEEE, 2016. 1–5. Print.
@inproceedings{7409083,
  abstract     = {In this paper, experimental results are presented for an encrypted wireless link between two body-worn sensor nodes fully integrated onto textile antenna platforms. Wireless communication between two persons walking in an indoor environment occurs over a unique physical propagation channel. For the purpose of data encryption, channel measurements are performed at both sides of the link, providing highly correlated pseudo random number sequences, with envelope correlation coefficients always above 0.7. Signals captured by an eavesdropper are substantially decorrelated, with correlation coefficients always below 0.15, and are therefore not suitable for key extraction. The mutual information is also determined, providing extra insight into the key generating potential of the pseudo random sequences. Practical error free secret key generation on both sides of the link, with reconciliation by means of Hamming check bits, is performed successfully in all cases between legitimate parties. At the same time, an eavesdropper is unable to extract the secret key from measured signals, as confirmed by the key error rates, which are calculated for all possible signal combinations, resulting in a key error rate after reconciliation around 0.5 for most eavesdropper channels and remaining at least 0.3 in the worst-case scenario.},
  author       = {Van Torre, Patrick and Castel, Thijs and Rogier, Hendrik},
  booktitle    = {2016 10TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP) },
  isbn         = {978-8-8907-0186-3},
  issn         = {2164-3342 },
  keywords     = {Key Generation,Encryption,Channel-State Information,Body-Centric,Textile Antenna,IBCN,Reconciliation},
  language     = {eng},
  location     = {Davos, Switserland},
  pages        = {1--5},
  publisher    = {IEEE},
  title        = {Encrypted body-to-body wireless sensor node employing channel-state-based key generation},
  url          = {http://dx.doi.org/10.1109/EuCAP.2016.7481769},
  year         = {2016},
}

Altmetric
View in Altmetric
Web of Science
Times cited: