Bitcoin Forum

Password is 14 char contains only numbers and letters, both upper and lower case, no real words, was a random generated string. Please help

How much money are we talking about? Because i think its gone. You wont be brute forcing 14 char password anytime soon.

Which wallet software/service are we talking about?

Not masses but enough to make me mess up my house trying to find the password and to spend the evening trying to find some way to get around it

How much do you remember about the password? Assuming you have used it a couple of times you should know at least a few parts. ...and again which software? Brute force time vary greatly depending on the wallet software you use.

You cant bruteforce full random 14 characters long and i dont think any wallets use fake encryption. His best bet is finding the password. Next time get backups.

Sorry haven't been able to reply because of the time lock thing, there theoretically are 12401769434657526912139264 things my password could be but I can rule out it being all numbers or all caps or all lowercase so 12401640414608120317837312 possible combinations. Other than that the software is Bitcoin Core, I don't remember anything substantial other than the prior mentioned as I made the wallet in 2015, uninstalled the program without clearing the data, reinstalled today, at that point I had misplaced and forgotten the password and in absent mindedness I already sent money to it before it clocked in my head that it hadn't asked me to set up a new password. So to recap - 14 Characters Uppercase, Lowercase and numbers, no symbols, it wasn't full numbers or letters either upper or lower, was created on Random.org if that makes it worse since they don't use an algorithm. So I am pretty sure I am screwed but if any of you can help at all it would be majorly appreciated

No its not about fake encryption, but key stretching.

vs. Electrum/Multibit Classic I can do 500K keys/s on 4 cores (i5); vs. a core wallet 1700 keys/s on a GPU (GTX 970); vs. a Multibit HD wallet 50 keys/s on 4 cores. If OP can remember enough to reduce the search space to a few billion possible password there is a chance the password can be recovered in reasonable time. If its a straight 14 random chars they have never seen before, there is no chance. Its however unlikely that you have never seen your own password.

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Well core is pretty good at defending against brute force attacks, I think you can do the math yourself with the above numbers. If you have a powerfull GPU you might wana try your luck for a few weeks. This[1] is the tool I would have used.

Edit: If you used a slow machine to create the wallet it might be possible to do more tries per second.

[1] https://github.com/gurnec/btcrecover

Would there be no way to salvage my private key by creating thousands of public keys from my client or does that not work, sorry if that sounds stupid I am new to this all

Wait I think I exported my private key ages ago to a different wallet, does that mean I can save my money?

If you still have access to the original wallet, and the money is on the original addresses then maybe, if not, i doubt so. Future generated addresses have their own privkey and only HD wallets always generate the same ones.

No. That won't work.


That's ok.  It's easy to understand your concern and hope.  If you've ever seen the password, then pieces of it may still be hidden away in your memory somwhere.

Perhaps when you aren't as stressed about it you'll suddenly remember that it started with a number, or that you found it interesting how it has 2 of the letters of your name, or that you were surprised to see a Z or a Q, or any other small detail.  The more you can get yourself back to the same state of mind you were in when you typed the password in the past, the better the chance that pieces will come back to you.


If you have the private key from the address that has the bitcoins, then you can recover the bitcoins.