Do Intel Chips Have A Data Dependence For Adding Numbers?

Posted on 2023-01-25: https://chaos.social/@gsuberland/109751988733831279

So an Openwall post made the extrordinary claim that Intel and AMD chips do not have data independence for instructions commonly used in cryptography, and certain libraries should set a bit in order to ensure they do.

This is partially true: the vendors don’t guarantee data independence when the bit is not set for those instructions, but there have been no observed cases so far of data dependence.

So in conclusion, the bit should probably be set just in case, but the world is not in fact on fire, phew.