US 12,231,523 B2
Method for location attestation for a device connected to a network
Niclas Ilg, Ammerbuch (DE); and Paulius Duplys, Markgroeningen (DE)
Assigned to ROBERT BOSCH GMBH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Sep. 18, 2023, as Appl. No. 18/469,160.
Claims priority of application No. 10 2022 210 077.8 (DE), filed on Sep. 23, 2022.
Prior Publication US 2024/0114082 A1, Apr. 4, 2024
Int. Cl. G06F 15/16 (2006.01); H04L 67/52 (2022.01); H04L 69/16 (2022.01)
CPC H04L 69/161 (2013.01) [H04L 67/52 (2022.05)] 9 Claims
OG exemplary drawing
 
1. A method for location attestation for a device connected to a network, comprising the following steps:
ascertaining at least one initial fingerprint, wherein the at least one initial fingerprint is specific to an initial network environment of the device in the network;
storing the at least one ascertained initial fingerprint as a reference;
ascertaining at least one current fingerprint, wherein the at least one current fingerprint is specific to a current network environment of the device on the network;
comparing the at least one ascertained current fingerprint with the reference; and
verifying a geographic location of the device at least partially based on the comparison, wherein the initial fingerprint and the current fingerprint are specific to a network environment of the device due to the fact that each of the initial fingerprint and the current fingerprint includes at least one identifier of a further device in the network, the at least one identifier being ascertained by an examination, including a scan, of a network environment, and wherein the at least one identifier is ascertained at least partially based on a recognized operating system of the further device and/or a service offered in the network, wherein OS fingerprinting including TCP/IP stack fingerprinting and/or service fingerprinting are carried out for this purpose.