I have hand-written asm for use in production code, and I would do it again. I also knew exactly what cpu my code would be running on. If I were publishing th

I have hand-written asm for use in production code, and I would do it again. I also knew exactly what cpu my code would be running on. If I were publishing the code to run on a variety of hardware, I would be very cautious. Writing your own crypto is very different; the stakes are higher if you get it wrong.