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Jeffrey Walton 2019-06-15 06:42:34 -04:00
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@ -208,7 +208,8 @@ library in your programs to help avoid unwanted redirections.
Crypto++ attempts to resist side channel attacks using various remediations.
The remdiations are applied as a best effort but are probably incomplete. They
are incomplete due to cpu speculation bugs like Spectre, Meltdown, Foreshadow.
Intel generally refers to them as "Microarchitectural Data Sampling" (MDS).
The attacks target both cpu caches and internal buffers. Intel generally refers
to internal buffer attacks as "Microarchitectural Data Sampling" (MDS).
The library uses hardware instructions when possible for block ciphers, hashes
and other operations. The hardware acceleration remediates some timing
@ -225,7 +226,8 @@ for Specter are -mfunction-return=thunk and -mindirect-branch=thunk, and the
library uses them during testing. If you want the Specter workarounds then add
the GCC options to your CXXFLAGS when building the library.
If you suspect or find an information leak then please report it.
To help resist attacks you should disable hyperthreading on cpus. If you
suspect or find an information leak then please report it.
*** Documentation and Support ***