Software Update as a Mechanism for Resilience and Security Proceedings of a Workshop (2017) / Chapter Skim
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8 Software Updates in Automotive Electronic Control Units
8 Software Updates in Automotive Electronic Control Units
Pages 47-52
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From page 47... ...
There was also EEPROM (electronic EPROMs) , which was cost prohibitive for wider use but suitable for storing essential automotive configurations or calibrations.
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From page 48... ...
As new automotive features were introduced, new software systems were developed. First came the engine controller, which optimizes car performance by reading sensors and sending controls to the car engine; the controller was invented to help cars meet Clean Air Act requirements.
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From page 49... ...
Vangelov noted that Ford has been using Wi-Fi to synchronize system updates with its assembly plants since 2010, which helps reduce the need for immediate or complex updates after a car has been purchased. OTHER CHALLENGES TO SOFTWARE DELIVERY Size is a growing challenge for delivering software updates in the automotive industry, Vangelov said.
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From page 50... ...
As computerized as cars have become, the vast majority are powered by a lead acid battery and internal combustion engine, a power supply system that is simply not optimized for long software updates without additional charging. Very large updates could risk draining the battery, which could erase the module being updated and even deprogram some of the car's ECUs, making them inoperable, Vangelov said.
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From page 51... ...
Vangelov said that Ford's new SYNC 3 system uses this approach to run updates in the background while all of the car's functions remain in use. SECURITY CONCERNS Forum Chair Fred Schneider asked Vangelov to speak to the issue of security, inquiring specifically about whether it is possible to "brick" a car.
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From page 52... ...
Peter Swire, Georgia Institute of Technology, asked Vangelov to explain whether the connections among different ECUs in a car could allow a hacker to get further into the car's controls after breaching one component. Vangelov explained that while the ECUs do interact, that interaction is at the networking signal communication level.
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