APPARATUSES AND METHODS WITH SECURE CONFIGURATION UPDATE

One example securely updates an integrated circuit to mitigate undesirable modifications and this involves an application circuit accessing an external network while a (e.g., nonvolatile) program memory is write protected; and a reset-boot circuit resetting and booting the application circuit while...

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Bibliographic Details
Main Authors Schneider, Tobias, Medwed, Marcel, Nikov, Ventzislav
Format Patent
LanguageEnglish
Published 07.12.2023
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
INFORMATION STORAGE
PHYSICS
STATIC STORES
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Summary:One example securely updates an integrated circuit to mitigate undesirable modifications and this involves an application circuit accessing an external network while a (e.g., nonvolatile) program memory is write protected; and a reset-boot circuit resetting and booting the application circuit while access to the external network is disabled, and causing an update for the application circuit. In response to an indication that an update is downloaded for installation, the downloaded update is installed in the memory while access to the external network is disabled, and execution of the reset mode is permitted after the update is installed. Also, a retrieval module may download, in response to an indication that an update is not downloaded, an update provided via the external network while the memory is write-protected and thereby permitting execution of the reset mode after the update is downloaded.
Bibliography:Application Number: US202217830197