Israeli security researchers have been able to extract encryption keys from a nearby computer by analysing stray electromagnetic radiation.
The attack by computer scientists from Tel Aviv University shows that TEMPEST-style side channel attacks are no longer just the preserve of Mission Impossible and three-letter spy agencies.
In a paper, titled
ECDH Key-Extraction via Low-Bandwidth Electromagnetic Attacks on PCs, the researchers demonstrate how secret decryption keys in applications using the libgcrypt11 library might be harvested.