09-22-2020, 06:22 AM
I doubt that Atomic Wallet is using a single round of unsalted MD5. How did you "convert the .dat file to a MD5 hash"? In any event, brute-forcing a 16 character passphrase, even straight MD5, is going to take some non-trivial resources, so I'd suggest trying to do everything you can to narrow down the search space. Every position you can change from a `?a` to `?u` or `?l` is going to be reducing the search time by better than an order of magnitude (eg 10 years to less than a year, one month to a couple of days, etc).