Back to results
US 9,806,884 B2Granted
System and method for cryptographic key identification
AssigneeRobert Bosch GmbH
InventorsMatthew Lewis, Jorge Guajardo Merchan
Life of this patent
Estimating the term…
Abstract
A system includes a MEMS device and a key generating device formed over the substrate. The key generating device is configured to generate a cryptographic key based on a property of the MEMS device and the MEMS device is configured to output a signal indicative of a sensed parameter. The generated cryptographic key is based on the influenced output signal of the MEMS device.
Claims15
A micromechanical sensor (MEMS) system comprising:
- a substrate;
- a MEMS device formed on the substrate and configured to generate an output signal indicative of a sensed parameter, the MEMS device including at least one via;
- and
- a key generating device formed on the substrate and configured to generate a cryptographic key based on a distance of the at least one via from at least one predetermined location of the MEMS device.
1 more element
A method generating a cryptographic key for a MEMS system including a via, the method comprising:
- determining a distance between the via of the MEMS system and a predetermined location of the MEMS device;
- generating the cryptographic key using a key generating device of the MEMS system based on the distance.
Dependencies are inferred from the claim text.