http://eprint.iacr.org/2016/129 h/t to zooko
Cryptology ePrint Archive: Report 2016/129
*ECDH Key-Extraction via Low-Bandwidth Electromagnetic Attacks on PCs*
/Daniel Genkin and Lev Pachmanov and Itamar Pipman and Eran Tromer/
*Abstract:*We present the first physical side-channel attack on elliptic
curve cryptography running on a PC. The attack targets the ECDH
public-key encryption algorithm, as implemented in the latest version of
GnuPG.
By measuring the target's electromagnetic emanations, the attack
extracts the secret decryption key within seconds, from a target located
in an adjacent room across a wall. The attack utilizes a single
carefully chosen ciphertext, and tailored time-frequency signal analysis
techniques, to achieve full key extraction.
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