Topic: Im a fool, encrypted wallet.dat , need advice - page 2. (Read 1513 times)
I experienced the same problem before. My advice to you is try to remember the password. Think in a simple/easy way, do not make the situation worse by trying to remember more complex passwords that you would have used. I remembered my password away from the computer/keyboard. Trying multiple failure passwords would make it much harder for you to remember. Good Luck!
well its max 15 charachters long, only 1 capital letter , only 1 symbol if even. Only 20 character's possible in the set
Sorry, didn't see this post until after I made my previous.
So it's definitely 15 characters? That's going to make it tough unless you can remember more about it. It helps that a symbol only occurs once, but even ignoring the potential symbols for the moment, just the fact of 15 characters drawn from a set of 20 possible is probably more than you are going to reasonably brute force. Perhaps some meditation and visualization will help you recall more facts about the passphrase?
well its max 15 charachters long, only 1 capital letter , only 1 symbol if even. Only 20 character's possible in the set
Wow, you really remember almost nothing about it, do you? You can't even remember if there was a symbol in it or not? Sounds like total amnesia.
- snip -
characters used to about 20, I know where the only upper case letter is, and i know it can contain only 1 of 4 possible symbols at max.
The password is between 8 and 15 characters.
- snip -
characters used to about 20, I know where the only upper case letter is, and i know it can contain only 1 of 4 possible symbols at max.
The password is between 8 and 15 characters.
- snip -
With a passphrase made up of 8 random characters drawn from a set of 24 possible characters (20 + 4 symbols) you are looking at 110,075,314,176 possible combinations.
I'm not certain, but that might be possible. Even better if you know that there is definitely one and only one symbol in the passphrase. Better yet if you can remember any specific characters that were definitely in the passphrase, and much better if you can remember any specific locations of any of hose characters that were definitely in the passphrase.
Really, the more you can remember about the passphrase, the easier brute forcing becomes. Remember a sequence of 2 or 3 characters that were definitely somewhere in the passphrase (such as "ed3k"), and you chances start to look really good. Remembering the length to a better specification than "between 8 and 20 characters" would help a lot as well.
Now, if you are looking at a passphrase made up of 15 random characters drawn from a set of 24 possible characters, you are looking at about 504,857,280,000,000,000,000 possible combinations. This is MUCH MUCH less likely to be brute forcible if you can't remember much else about the passphrase.
$250 is one expensive lesson
If the worst happens you only have 2 BTC in there so you could put it down to experience and move on, (but I would hate doing that as well.)
See here:
https://bitcointalksearch.org/topic/encrypted-walletdat-lost-password-any-solutions-85495
If you can remember "most" of it, you should be able to get into it.
https://bitcointalksearch.org/topic/encrypted-walletdat-lost-password-any-solutions-85495
If you can remember "most" of it, you should be able to get into it.
well its max 15 charachters long, only 1 capital letter , only 1 symbol if even. Only 20 character's possible in the set
To brute force a password that is 15 characters (assuming it has numbers, lower, and uppercase letters would take forever, literally:
Time Required to Exhaustively Search this Password's Space:
Online Attack Scenario:
(Assuming one thousand guesses per second) 2.48 hundred trillion centuries
Offline Fast Attack Scenario:
(Assuming one hundred billion guesses per second) 2.48 million centuries
Massive Cracking Array Scenario:
(Assuming one hundred trillion guesses per second) 2.48 thousand centuries
Time Required to Exhaustively Search this Password's Space:
Online Attack Scenario:
(Assuming one thousand guesses per second) 2.48 hundred trillion centuries
Offline Fast Attack Scenario:
(Assuming one hundred billion guesses per second) 2.48 million centuries
Massive Cracking Array Scenario:
(Assuming one hundred trillion guesses per second) 2.48 thousand centuries
I would think that could be quicker based on some of the things that the OP said they know. If you use an offline very fast set of computers I would say you could get it (hopefully in a few years tops:))... is it worth it depends on how many coins in it.
Also, if you can find a way to remember the length of the pass phrase, and maybe even recall some more of the characters, you may be able to get it down to few enough combinations that it can be brute forced.
I know nothing about windows, but it would be worth searching some windows related forums in order to determine if the pass phrase you typed is stored in a history somewhere; for instance, bash will store everything typed on the command line to an in-memory history that is searchable, and then it will also save that history to disk when you exit the terminal.
I'd better get started so
To brute force a password that is 15 characters (assuming it has numbers, lower, and uppercase letters would take forever, literally:
Time Required to Exhaustively Search this Password's Space:
Online Attack Scenario:
(Assuming one thousand guesses per second) 2.48 hundred trillion centuries
Offline Fast Attack Scenario:
(Assuming one hundred billion guesses per second) 2.48 million centuries
Massive Cracking Array Scenario:
(Assuming one hundred trillion guesses per second) 2.48 thousand centuries
Time Required to Exhaustively Search this Password's Space:
Online Attack Scenario:
(Assuming one thousand guesses per second) 2.48 hundred trillion centuries
Offline Fast Attack Scenario:
(Assuming one hundred billion guesses per second) 2.48 million centuries
Massive Cracking Array Scenario:
(Assuming one hundred trillion guesses per second) 2.48 thousand centuries
Windows unfortunately, is there some way to read the keylog ?
I dont think ill remember it, its a password i never used before and I dont think i ever really learned it off, I just presumed it was so easy I wouldnt forget it! haha...................
I dont think ill remember it, its a password i never used before and I dont think i ever really learned it off, I just presumed it was so easy I wouldnt forget it! haha...................
Did you use bitcoind on a linux console? Perhaps the passphrase is still in your bash history?
@drbanjo, I second this. Save the wallet for sometime in the future when the password comes back to you... hey maybe you can see a hypnotherapist to have the password recovered from your brain?
bitcoind
What bitcoin client did you use to encrypt? bitcoind? or did you use a gui client?
Best of luck with this but with a password of that length the odds of a brute force hack are stacked against you. 
Ill keep trying that, dont think its going to happen though. No ideas so?
Jump to: