Comment by tryp

Toward the end of that slide deck, in the "Slowing Brute Force" section, there the following slide:

> Argon2 ensures that both defenders and attackers hash passwords on the same platform (x86)

Do they simply mean that currently the most cost effective platform to deliver the necessary computation and memory is x86?

I'm having trouble believing that it is either achievable or desirable to design a password hash that's only efficient on one architecture.