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Acoustic Cryptanalysis: Side Channel Attack, Computer Keyboard, Impact Printer - Brossura

 
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Acoustic cryptanalysis is a side channel attack which exploits sounds emitted by computers or machines. Modern acoustic cryptanalysis mostly focuses on sounds emitted by computer keyboards and internal computer components, but historically it has also been applied to impact printers and electromechanical cipher machines.Victor Marchetti and John D. Marks eventually negotiated the declassification of CIA acoustic intercepts of the sounds of cleartext printing from encryption machines. Technically this method of attack dates to the time of FFT hardware being cheap enough to perform the task-in this case the late 1960s to mid-1970s. However, using other more primitive means such acoustical attacks were made in the mid-1950s.

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