Hacker News Reader

Ah, yep. You're right. I overlooked that part. It looks like it's truly non-reversible—even if you don't care what the resulting input is.

If you do ever figure out how to reverse SHA-256, best keep it a secret until you've sold all your free Bitcoin.

It's funny, people used to explain that the encryption used in bitcoin is secure because otherwise all your online banking would be at risk.

People don't say that any more because if someone were to break SHA-256 they would actually steal bitcoin first.