Stealing Keys from PCs using a Radio

http://www.tau.ac.il/~tromer/radioexp/ We demonstrate the extraction of secret decryption keys from laptop computers, by nonintrusively measuring electromagnetic emanations for a few seconds from a distance of 50 cm. The attack can be executed using cheap and readily-available equipment: a consumer-grade radio receiver or a Software Defined Radio USB dongle. The setup is compact and can operate untethered; it can be easily concealed, e.g., inside pita bread. Perhaps someday extensible to coffeeshop pretext: "hey, can you help me test my bitcoin, let's swap a satoshi..."