Crypto: IBM Pushes Fully Homomorphic Crypto

grarpamp grarpamp at
Tue Apr 6 00:42:02 PDT 2021
 US chipmaker AMD advised customers last week to disable a new
performance feature if they plan to use CPUs for sensitive operations,
as this feature is vulnerable to Spectre-like side-channel attacks.
Called Predictive Store Forwarding (PSF), this feature was added to
AMD CPUs part of the company's Zen 3 core architecture, a processor
series dedicated to gaming and high-performance computing, which
launched in November 2020. The feature implements a technique called
speculative execution, which works by running multiple alternative CPU
operations in advance to make results available faster, and then
discarding "predicted" data once deemed unneeded.

More information about the cypherpunks mailing list