Now what, does it surprise you that the (very very likely faked) wallet.dat file is encrypted? It's obviously encrypted because the scammer who likely sold you the file doesn't want his gullible victims to find out too quickly that they were scammed. Out of curiosity: how much did you pay for it?

And for what purpose did you full quote the OP exactly? 


The whole story sounds quite a bit made up and you don't really believe the OP, do you? If I were a fake wallet.dat seller/scammer, I'd post such bullshit with one of my alts to draw attention for my "new" precious wallet file.