[Cryptography] 9999 keys for this one iPhone

[Jerry Leichter]

> Even easier to believe Apple can comply and more importantly easier to
> believe the software if it exists would be abused at a kiosk near you. 
> 
> Teardown sites show me that the flash is available and could be
> archived. https://www.ifixit.com/Teardown/iPhone+5s+Teardown/17383 <https://www.ifixit.com/Teardown/iPhone+5s+Teardown/17383>
Where's the unique ID?  I very much doubt it's in the flash.  I'd bet it's on the CPU chip - after all, the RAM is already there - and difficult to extract.  If so, the ability to clone the flash gains you nothing - without  a CPU chip with the right unique ID, you can't decrypt the flash contents - even if you know the passcode.

Yes, if you can run some of your own code on the CPU, you might be able to get it to give you the unique ID.  But that leaves you with the original problem:  How to get your own code to run on the phone without unlocking it first.

                                                        -- Jerry
 
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