"...quantum computing could fix this... or break the entire system entirely."
I think quantum computing are so competent that extant encryption becomes trivial to hack, or at least that's been my understanding of claims made for it.
"SHA-256 is designed by NSA..."
Which is why I doubt it. Why would they release their rock solid cryptographic algorithm to a world full of their targets and enemies if they didn't have a sekrit backdoor?
Anywho, cryptography is becoming ever more important as the ability to speak privately is harder to enjoy with every passing day. It seems like all of Europe isn't just talking about E2E encryption being backdoored (to save the children from terrorists, of course) but actually forcing communications providers to do it, and this will make all of our dickpics classified government property, which means we won't even be able to see them without clearance. Worse, governments are utterly corrupt, so these backdoors will get into the wrong hands, and before we know it Bob's your uncle and every NK hax0r worth their salt will have ALL our dickpics and there won't be a damn thing we can do about it.
Thanks!
You can SHA-256 hash an 80 gigabyte file.
There is no backdoor.
The data is lost.
You can't reverse engineer a couple of characters back into an 80 gig file.
It's pretty well documented that SHA-256 does not have backdoors and is often cited as the reason why people thought Satoshi worked for the NSA at one point.
I can't, but I have no confidence the NSA can't. There's all sorts of mathematical tricks smart, sneaky people have come up with. You are aware, of course, that translating Satoshi Nakamoto means 'central intelligence', so I don't need to point that out. Anyway, I don't trust anything from known liars, and I know the NSA are pathological liars.
'Nuff said.