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It is possible to extract encryption keys by recording coil whine with a phone next to the computer (2013 paper) (web.archive.org)

submitted 11 months ago* (last edited 11 months ago) by [email protected] to c/[email protected]

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A more TLDR article about this: https://www.extremetech.com/defense/173108-researchers-crack-the-worlds-toughest-encryption-by-listening-to-the-tiny-sounds-made-by-your-computers-cpu

FAQs from the researchers: https://web.archive.org/web/20230130225254/http://www.cs.tau.ac.il/~tromer/acoustic/

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[–] [email protected] 1 points 11 months ago

The researchers say in the FAQ that they disclosed it to GnuPG and they have mitigated their implementation against their specific attack, but it leaves the question of whether it is still vulrnable to a a more advanced method of audio sidechanneling and whether other encryption implementations, say, OpenSSL, OpenSSH, or Veracrypt, are also vulrnable to similar attacks.