Re:ECDSA smartphone key extraction using $2 magnetic probe
by mrswag on Friday March 25, 2016 @05:39AM
(#11359201)
An RTL-SDR (6$ on ebay, get the R820T2) could work too.
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Re:ECDSA smartphone key extraction using $2 magnetic probe
by cnvogel on Friday March 25, 2016 @05:59AM
(#11359254)
The RTL SDR can (unmodified) only receive down to a few ten MHz. At least for some of their research they used a soundcard. As far as I know you will access different types of information. kHz range is mostly power consumption. Tens/hundreds of MHz is bus activity.
Both may be correlated, and both gives you side channel information to attack cryptography.