3 ms·
Your parent is talking about register spills to memory. Using memory instead of registers may be somewhat inefficient, but it's still constant-time (i.e. no dep
by JoachimSchipper 7y ago
Your parent is talking about register spills to memory. Using memory instead of registers may be somewhat inefficient, but it's still constant-time (i.e. no dependence on the key etc.)
- a1369209993 7y agoIf the attacker has Meltdown/Specter-style access to your stack, register spills (especially but exclusively if not overwritten when you're done) can compromise your keys, but you need to have a rather weird threat model to avoid having them just read the actual keys out whatever storage you got them from in the first place.