There is no way this can be right. If that was a true random hex number with that many digits there is no way it could be cracked easily. Can someone else input on this?
af5c73ca7cf5f25ffa3b6b1689f40aaf60fd040b0de298c1ca661f8602d38311 is easily cracked coz it's SHA256("Alice"), or something similar. The same issue as I told about Exp(X).