Method for assuring flash programming integrity
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United States of America Patent
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N/A
Issued Date -
May 17, 2007
app pub date -
Nov 14, 2005
filing date -
Nov 14, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A method is provided for assuring that only the correct version of a software update is permitted to be installed in a computer controlled module, such as a vehicle controller. Each version of the software is embedded with a unique identifier, and each software update has an embedded list of the identifiers of the software versions which it is authorized to update or replace. A flashloader is used to determine if the identifier of the software in the controller is present in the list embedded in a proposed update, and installs the update if a match is found. Checksums and encryption of the identifiers can be used to enhance reprogramming integrity.
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