[Cryptography] randomness +- entropy

[David Johnston]

On 11/7/2013 11:08 AM, Jerry Leichter wrote:
> The smartphone and the embedded system are*very*  different.  Any phone has a microphone and a radio.  Unfortunately, the radios are usually sealed off so you couldn't use them as a source of radio noise; but the microphones are wide open.
I disagree about the 'sealed-off' thing.

I have championed the use of the radio as an entropy source in several 
wireless product developments. Most wireless modems have a symbol error 
vector register that is trivial to read. I have never found it to be a 
technical problem. The problem lays in having the right engineers aware 
of the need.


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