Method of authenticating a device
AssigneeGemalto SA
InventorsPhilippe Proust, Claude Barral
Life of this patent
Estimating the term…
Abstract
The invention is a method for authenticating a device which comprises a chip and a body carrying the chip. The body comprises a graphical security feature. The method comprises the steps of: running a first physical unclonable function for generating a first response representative of the chip, extracting a first reference from the graphical security feature, authenticating the device by checking that said first response and first reference are linked by a preset mathematical function. The extracting step and the authenticating step are carried out by a machine distinct from the device.
Claims11
A method for authenticating a device, said device comprising a chip and a body carrying the chip, wherein the body comprises a graphical security feature said method comprising the following steps:
- running a first physical unclonable function for generating a first response representative of said chip,
- extracting a first reference from the graphical security feature, and
- authenticating the device by checking that said first response and first reference are linked by a first preset mathematical function, said extracting step and authenticating step being carried out by a machine distinct from the device.
A device comprising:
- a chip and a body carrying the chip, said device being configured to run a first physical unclonable function able to generate a first response representative of said chip,
- wherein the body comprises a graphical security feature,
- and wherein said graphical security feature comprises a first reference that has been computed by applying said first response to a first mathematical function, said first reference comprising data that, in combination with said first response, enables the device to be authenticated.
A system comprising:
- a machine, and
- a device, said device comprising a chip and a body carrying the chip, said device being configured to run a first physical unclonable function to generate a first response representative of said chip,
- wherein the body comprises a graphical security feature,
- wherein said graphical security feature comprises a first reference that is computed by applying said first response to a first mathematical function, said first reference enabling the authentication of the device in combination with said first response,
- wherein said machine is configured to extract said first reference from the graphical security feature,
- and wherein said machine is further configured to authenticate the device by checking that said first response and first reference are linked by said first preset mathematical function, the machine being distinct from the device.
A method for personalizing a device, said device comprising a chip and a body carrying the chip, said method comprising the following steps:
- running a first physical unclonable function for generating a first response representative of said chip,
- computing a first reference by applying said first response to a first mathematical function and
- writing a graphical security feature which comprises said first reference on the body.
Dependencies are inferred from the claim text.