Anti-rollback version upgrade in secured memory chip

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United States of America Patent

PATENT NO 10754988
APP PUB NO 20180060607A1
SERIAL NO

15670062

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Importance

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Abstract

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A secured storage system includes a non-volatile memory and a controller. The non-volatile memory is configured to store a first data item and a respective first version identifier assigned to the first data item. The controller is configured to receive a second data item accompanied by a second version identifier and a signature, for replacing the first data item in the non-volatile memory, to authenticate at least the second version identifier using the signature, to make a comparison between the stored first version identifier and the second version identifier, and to replace the first data item with the second data item only in response to verifying that (i) the second version identifier is authenticated successfully, and (ii) the second data item is more recent than the first data item, as indicated by the comparison between the stored first version identifier and the authenticated second version identifier.

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Patent Owner(s)

Patent OwnerAddress
WINBOND ELECTRONICS CORPORATIONNO 8 KEYA 1ST RD DAYA DISTRICT CENTRAL TAIWAN SCIENCE PARK TAICHUNG CITY 42881

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Admon, Itay Tel Aviv, IL 8 42
Tasher, Nir Tel Mond, IL 33 318

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