Zeroization implementation
Zeroization implementation
(OP)
Hi Guys,
What will be the best way to provide Zeroization option for a system without using an external (Covered) switch? Zeroization pin when grounded clears all the software on the system. Some systems have implementation that takes external 12V pulse with isolated GND to trigger the internal system Zeroization pin grounding. But this approach require an external 12V source. The requirement is to have this implementation exercised remotely vs by a local switch. Any thought on this will be appreciated.
Thx
What will be the best way to provide Zeroization option for a system without using an external (Covered) switch? Zeroization pin when grounded clears all the software on the system. Some systems have implementation that takes external 12V pulse with isolated GND to trigger the internal system Zeroization pin grounding. But this approach require an external 12V source. The requirement is to have this implementation exercised remotely vs by a local switch. Any thought on this will be appreciated.
Thx





RE: Zeroization implementation
I'm making all sorts of assumptions about how the zeroization works in this equipment; I presume it's based on volatile memory?
RE: Zeroization implementation
Thx for the input.
RE: Zeroization implementation
Zeroization detected - Wiping Flash!
1% ...
2% ...
ERROR - File Not Found
Operation Aborted
That would be bad.
Also, many larger flash memories have hidden spare sectors used to prolong the lifespan. These hidden sectors cannot be accessed by the OS in the usual manner, and thus may allow some data leakage.
Also have to think about power outages, if the application demands it.
RE: Zeroization implementation
Thanks.
RE: Zeroization implementation
Dan - Owner
http://www.Hi-TecDesigns.com
RE: Zeroization implementation
TTFN

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RE: Zeroization implementation
http://digital-forensics.sans.org/blog/2011/01/25/...
Depending on the requirements, it might be an approach.
@Kepco - are you simply interfacing to an existing system, or are you involved in the design of that system.