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Sensors 2014, 14(7), 11542-11556; doi:10.3390/s140711542
Article

A Trustworthy Key Generation Prototype Based on DDR3 PUF for Wireless Sensor Networks

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,
 and
*
School of Optical and Electronic Information, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan 430074, China
* Author to whom correspondence should be addressed.
Received: 12 March 2014 / Revised: 15 May 2014 / Accepted: 25 June 2014 / Published: 30 June 2014
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Abstract

Secret key leakage in wireless sensor networks (WSNs) is a high security risk especially when sensor nodes are deployed in hostile environment and physically accessible to attackers. With nowadays semi/fully-invasive attack techniques attackers can directly derive the cryptographic key from non-volatile memory (NVM) storage. Physically Unclonable Function (PUF) is a promising technology to resist node capture attacks, and it also provides a low cost and tamper-resistant key provisioning solution. In this paper, we designed a PUF based on double-data-rate SDRAM Type 3 (DDR3) memory by exploring its memory decay characteristics. We also described a prototype of 128-bit key generation based on DDR3 PUF with integrated fuzzy extractor. Due to the wide adoption of DDR3 memory in WSN, our proposed DDR3 PUF technology with high security levels and no required hardware changes is suitable for a wide range of WSN applications.
Keywords: WSN; PUF; DDR3; key generation; fuzzy extractor WSN; PUF; DDR3; key generation; fuzzy extractor
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Liu, W.; Zhang, Z.; Li, M.; Liu, Z. A Trustworthy Key Generation Prototype Based on DDR3 PUF for Wireless Sensor Networks. Sensors 2014, 14, 11542-11556.

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