Key Distribution for Wireless Sensor Networks and Physical Unclonable Functions
Jorge Guajardo, Sandeep S. Kumar, Pim Tuyls · 2008
Abstract. Virtually all applications which provide or require a security service need a secret key. In an ambient world, where (potentially) sensitive information is continually being gathered about us, it is critical that those keys be both securely deployed and safeguarded from compromise. In this paper, we provide solutions for secure key deployment in sensor networks based on the use of Physical Unclonable Functions (PUFs). In particular, we show how the properties of Fuzzy Extrac-tors or Helper Data algorithms can be used to securely deploy secret keys to a low cost wireless node. Our protocols are more ecient (round complexity) and allow for lower costs compared to previously proposed ones.