Tuesday, February 14, 2012

Side Channel

In the analysis of communications security, a side channel is a leakage of information out of a secure channel, typically via some physical effect that was not considered by the device's designers. Sexy examples in cryptanalysis include tricks like monitoring fluctuations in the power consumption of a device as it decrypts a known message. Here is a kind of stupid but more real-world example, not limited to Android as the headline suggests.

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