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Looking for a link to what I believe was recent research that was similar to "RSA Key Extraction via Low-Bandwidth Acoustic Cryptanalysis" - but instead of being based on acoustic emanations, the research used electrical signal processing. Physical access to the system was required.

blunders
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    http://www.tau.ac.il/~tromer/handsoff/ ? – David Sep 11 '14 at 21:56
  • @David: Yes, that's correct, please post your comment as an answer. Thanks! – blunders Sep 12 '14 at 02:28
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    **RELATED-QUESTION:** [RSA key recovery using sound - How does it work?](http://security.stackexchange.com/questions/47334/rsa-key-recovery-using-sound-how-does-it-work) – blunders Sep 12 '14 at 02:29

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Get Your Hands Off My Laptop: Physical Side-Channel Key-Extraction Attacks On PCs

David
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