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Physical layer secret-key generation with discreet cosine transform for the Internet of Things

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

Original languageEnglish
Title of host publication2017 IEEE International Conference on Communications (ICC 2017)
Subtitle of host publicationProceedings of a meeting held 21-25 May 2017, Paris, France
Publisher or commissioning bodyInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages6
ISBN (Electronic)9781467389990
ISBN (Print)9781467390002
DateAccepted/In press - 27 Jan 2017
DateE-pub ahead of print - 31 Jul 2017
DatePublished (current) - Nov 2017
Event2017 IEEE International Conference on Communications, ICC 2017 - Paris, France
Duration: 21 May 201725 May 2017

Publication series

ISSN (Print)1938-1883


Conference2017 IEEE International Conference on Communications, ICC 2017


The confidentiality of communications in the Internet of Things (IoT) is critical, with cryptography currently being the most widely employed method of ensuring it. Establishing cryptographically secure communication links between two transceivers requires the pre-agreement on some key, unknown to an external attacker. In recent years there has been growing attention in techniques that generate a shared random key through observation of the channel and its effects on the exchanged messages. In this work we present SKYGlow, a novel scheme for secret-key generation, designed for IoT devices, such as IEEE 802.15.4 and Bluetooth Low Energy (BLE) transceivers. SKYGlow employs the Discreet Cosine Transform (DCT) of channel observations and Slepian-Wolf coding for information reconciliation. Real-life experiments have resulted in the creation of 128-bit secret keys with only 65 packet exchanges and with an entropy of 0.9978 bits, making our scheme much more energy-efficient compared with others in the existing literature.

    Research areas

  • Secret-Key, DCT, physical layer, SECURITY, physical layer security


2017 IEEE International Conference on Communications, ICC 2017

Duration21 May 201725 May 2017

Event: Conference

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  • Full-text PDF (accepted author manuscript)

    Rights statement: This is the author accepted manuscript (AAM). The final published version (version of record) is available online via IEEE at Please refer to any applicable terms of use of the publisher.

    Accepted author manuscript, 2.79 MB, PDF document


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