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:
Jun. 18, 2024
Filed:
Apr. 29, 2020
Continental Automotive Gmbh, Hannover, DE;
Stefan Bieger, Nidda, DE;
Continental Automotive GmbH, Hannover, DE;
Abstract
A method for transmitting a boot code, with improved data security, from a programming device to a microcontroller, including: a) creating a first public key, a first private key, and a password; b) generating a bootloader binary for execution on the microcontroller, c) estimating a tolerable total processing time, which consists of the processing times of steps d) to f); d) transmitting the bootloader binary from the programming device to the microcontroller; e) executing, by the microcontroller, the bootstrap loader code, the decryption routine, and the decrypted bootloader routines; f) transmitting at least the second public key from the microcontroller to the programming device; g) if the actual processing times of steps d) to f) are outside the tolerable total processing time, terminating the method; and h) otherwise, encrypting, by the programming device, the boot code by the second public key and transmitting an encrypted boot code to the microcontroller.