DEVICE AND METHOD FOR OBTAINING A CRYPTOGRAPHIC KEY
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United States of America Patent
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Issued Date -
Feb 28, 2013
app pub date -
Jan 19, 2011
filing date -
Jan 20, 2010
priority date (Note) -
Abandoned
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Abstract
A computing device for obtaining a first cryptographic key during an enrollment phase, the computing device comprising a key generator for generating the first cryptographic key in dependence upon a seed, the computing device being configured for storing the first cryptographic key on a storage of the computing device for later cryptographic use of the first cryptographic key on the computing device during a usage phase coming after the enrollment phase wherein, the computing device further comprises a physically unclonable function, the key generator being configured for deriving the seed from an output of the physically unclonable function, and an encryption module for encrypting the first cryptographic key using a second cryptographic key derived from the output of the physically unclonable function, the computing device being configured for storing the first cryptographic key on the storage in encrypted form.
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