RSA-4096 / ElGamal-3072 – Physical Side-Channel Key-Extraction Attacks [pdf](cs.tau.ac.il)
cs.tau.ac.il
RSA-4096 / ElGamal-3072 – Physical Side-Channel Key-Extraction Attacks [pdf]
http://www.cs.tau.ac.il/~tromer/papers/handsoff-20140731.pdf
http://www.cs.tau.ac.il/~tromer/papers/handsoff-20140731.pdf
I guess this is also another reason why TEMPEST defines shielding standards to help mitigate these side-channel attacks.