[Cryptography] How can you enter a 256-bit key in 12 decimal digits?

[Ray Dillinger]

On 01/03/2016 04:33 PM, Tony Arcieri wrote:
> It's possible there's some sort of high-entropy on-device secret. There are
> also ways of generating these secrets in such a way that attempts to
> physically tamper with the device will destroy the secret generator, e.g.
> https://en.wikipedia.org/wiki/Physical_unclonable_function
> 

the point is though that if they steal the device, then they
steal the high-entropy on-device secret along with it.  They
only have to hook up their serial port to the wires that
the buttons connect to, and try the 10^12 combinations.  They
never have to try to work out the high-entropy secret.

				Bear


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