SHLD isn't Any Faster than IMUL

https://software.intel.com/sites/default/files/managed/9e/bc/64-ia-32-architectures-optimization-manual.pdf


see instruction latency appendix. That means you can multiply without any hacks. But division is still much more expensive than right shift.

>>22

They are on HDD most of the time, then getting timing right makes it hard.

I don't get what you are on about. Also, this is nothing but an assumption on your part. Ephemeral keys are used all the time for example - these are never stored on the disk, only in memory (or in the cpu cache).

If you don't know where the shit is and how it gets accessed

We do not care about that. We only care about the timing.

you can't time processing of it in any predictable way

I will just average it out.