The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 10, 2026
Filed:
Mar. 07, 2022
Siemens Aktiengesellschaft, Munich, DE;
Fabrizio De Santis, Munich, DE;
Antonio Vaira, Munich, DE;
SIEMENS AKTIENGESELLSCHAFT, Monchen, DE;
Abstract
A monitoring system including a requesting device, a monitoring apparatus and a signing device, wherein the monitoring apparatus is configured to receive a signature request data structure, store the data, receive a hash-based digital signature generated for the data by a stateful hash-based cryptographic function of the signing device, extract a one-time signature from the received hash-based digital signature, determine a one-time public key based on the stored data to be signed and the one-time signature, compare the one-time public key with previous one-time public keys determined from hash-based digital signatures previously received from the signing device, and if the one-time public key is different to any of previous one-time public keys, store the one-time public key in a data storage unit, if the one-time public key is equal to at least one of the previous one-time public keys, output a first warning signal to the requesting device.