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Revision:  375358
Date:      2014-12-23
Time:      21:24:55Z
Committer: rea

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VuXML IDDescription
80771b89-f57b-11e2-bf21-b499baab0cbegnupg -- side channel attack on RSA secret keys

A Yarom and Falkner paper reports:

Flush+Reload is a cache side-channel attack that monitors access to data in shared pages. In this paper we demonstrate how to use the attack to extract private encryption keys from GnuPG. The high resolution and low noise of the Flush+Reload attack enables a spy program to recover over 98% of the bits of the private key in a single decryption or signing round. Unlike previous attacks, the attack targets the last level L3 cache. Consequently, the spy program and the victim do not need to share the execution core of the CPU. The attack is not limited to a traditional OS and can be used in a virtualised environment, where it can attack programs executing in a different VM.


Discovery 2013-07-18
Entry 2013-07-25
Modified 2013-07-26
gnupg
lt 1.4.14

http://eprint.iacr.org/2013/448
http://lists.gnupg.org/pipermail/gnupg-announce/2013q3/000330.html