This is what I've been waiting for for many years. I did these before answers could be found, and there's a few places I had "working" answers but wasn't happy

This is what I've been waiting for for many years. I did these before answers could be found, and there's a few places I had "working" answers but wasn't happy with the maths and wished I could discuss it. Just a few months ago a padding Oracle exploit was found against Microsoft exchange. There's a immense attack surface still out there for people who do these challenges.