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:
Dec. 23, 2025
Filed:
Feb. 04, 2019
Siemens Mobility Gmbh, Munich, DE;
Markus Seemann, Braunschweig, DE;
Siemens Mobility GmbH, Munich, DE;
Abstract
A method transmits a message from a transmitter to a receiver. A telegram generated by the transmitter and contains the message and check data, is transferred to a transmitter-side access protection device. The transmitter-side access protection device modifies the telegram and then transmits it to a receiver-side access protection device. The transmitter-side access protection device modifies the telegram by encrypting the check data, which contains a security code formed with the message by the transmitter, using a secret key forming coded data. The message remains unencrypted in the telegram. The receiver-side access protection device processes the modified telegram and passes the processed telegram to the receiver. The receiver-side access protection device forms the processed telegram by decrypting the coded data, and the receiver verifies the processed telegram using the message contained therein and the check data contained therein and rejects the message if the check data does not correlate.