Delay-Based Circuit Authentication and Applications

  title={Delay-Based Circuit Authentication and Applications},
  author={Blaise Gassend and Dwaine E. Clarke and Marten van Dijk and Srinivas Devadas},
We describe a technique to reliably identify individual integrated circuits (ICs), based on a prior delay characterization of the IC.We describe a circuit architecture for a key card for which authentication is delay based, rather than based on a digital secret key. We argue that key cards built in this fashion are resistant to many known kinds of attacks.Since the delay of ICs can vary with environmental conditions such as temperature, we develop compensation schemes and show experimentally… CONTINUE READING
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