Diffie's wireless phone: Heterodyning-based physical-layer encryption

Jerry T. Chiang, Yih Chun Hu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We propose a physical-layer encryption scheme inspired by Diffie's telephone system. Instead of the usual XOR-then-modulate encryption scheme, we propose using modulate-then-add, and show that the decryption operation can be implemented using the circuit operation of heterodyning. We then show that a slightly modified superheterodyne receiver performs decryption at no additional cost compared to existing receivers. Our proposed cryptosystem is significant to the research community for the following reasons: 1) Our physical-layer encryption scheme uniquely outperforms other physical-layer security protocols by guaranteeing positive conditional secrecy capacity as long as Bob's signal-to-interference-and-noise ratio is above a threshold, even if Eve's channel condition is the same or significantly better than Bob's or if the channel between Alice and Bob is static, and 2) Our physical-layer encryption scheme shows that by removing a filter that the wireless circuit community has long considered to be necessary in the superheterodyne design, the modified receiver offers intriguing security features.

Original languageEnglish (US)
Title of host publicationProceedings - 2013 IEEE Military Communications Conference, MILCOM 2013
Pages470-475
Number of pages6
DOIs
StatePublished - Dec 1 2013
Event2013 IEEE Military Communications Conference, MILCOM 2013 - San Diego, CA, United States
Duration: Nov 18 2013Nov 20 2013

Publication series

NameProceedings - IEEE Military Communications Conference MILCOM

Other

Other2013 IEEE Military Communications Conference, MILCOM 2013
CountryUnited States
CitySan Diego, CA
Period11/18/1311/20/13

Fingerprint

Heterodyning
Cryptography
Telephone systems
Networks (circuits)
Costs

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Chiang, J. T., & Hu, Y. C. (2013). Diffie's wireless phone: Heterodyning-based physical-layer encryption. In Proceedings - 2013 IEEE Military Communications Conference, MILCOM 2013 (pp. 470-475). [6735667] (Proceedings - IEEE Military Communications Conference MILCOM). https://doi.org/10.1109/MILCOM.2013.87

Diffie's wireless phone : Heterodyning-based physical-layer encryption. / Chiang, Jerry T.; Hu, Yih Chun.

Proceedings - 2013 IEEE Military Communications Conference, MILCOM 2013. 2013. p. 470-475 6735667 (Proceedings - IEEE Military Communications Conference MILCOM).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Chiang, JT & Hu, YC 2013, Diffie's wireless phone: Heterodyning-based physical-layer encryption. in Proceedings - 2013 IEEE Military Communications Conference, MILCOM 2013., 6735667, Proceedings - IEEE Military Communications Conference MILCOM, pp. 470-475, 2013 IEEE Military Communications Conference, MILCOM 2013, San Diego, CA, United States, 11/18/13. https://doi.org/10.1109/MILCOM.2013.87
Chiang JT, Hu YC. Diffie's wireless phone: Heterodyning-based physical-layer encryption. In Proceedings - 2013 IEEE Military Communications Conference, MILCOM 2013. 2013. p. 470-475. 6735667. (Proceedings - IEEE Military Communications Conference MILCOM). https://doi.org/10.1109/MILCOM.2013.87
Chiang, Jerry T. ; Hu, Yih Chun. / Diffie's wireless phone : Heterodyning-based physical-layer encryption. Proceedings - 2013 IEEE Military Communications Conference, MILCOM 2013. 2013. pp. 470-475 (Proceedings - IEEE Military Communications Conference MILCOM).
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