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Bitcoin => Bitcoin Technical Support => Topic started by: wigglyuk on November 15, 2011, 11:35:28 PM



Title: Decryption on my own encrypted wallet.dat file?
Post by: wigglyuk on November 15, 2011, 11:35:28 PM
So I forgot to back up my wallet.dat file and created a passphrase for my main wallet. Well I wrote this passphrase down on a paper then entered it in the bitcoin client.
This morning I tried typing the passphrase in but it was incorrect.
I had 16 characters written down which should be a close approximation of the actually passphase. Is there any software I can run with my graphics cards or any written method I can use to decrypt my own encryption.


Title: Re: Decryption on my own encrypted wallet.dat file?
Post by: astana on November 16, 2011, 04:41:43 AM
lol, sounds believable....


Title: Re: Decryption on my own encrypted wallet.dat file?
Post by: notme on November 17, 2011, 01:40:52 AM
You could write your own, or pay someone to write it.  If you have something close, you could try mutations of that ordered by levenshtein distance or something.  Pull the decrypting code from bitcoin and run it in a loop on those mutations until you find the one that works.


Title: Re: Decryption on my own encrypted wallet.dat file?
Post by: GideonGono on March 13, 2012, 04:36:28 AM
I have the same issue. I remember most of the password. It's just one or two characters that are off. Anyone else found a solution?


Title: Re: Decryption on my own encrypted wallet.dat file?
Post by: shakaru on March 13, 2012, 05:31:07 AM
I have the same issue. I remember most of the password. It's just one or two characters that are off. Anyone else found a solution?

download your self a copy of backtrack 5. There are some good brute force password manipulators in there. It will give you a list of all possibilities. You just have to try them out.


Title: Re: Decryption on my own encrypted wallet.dat file?
Post by: John (John K.) on March 13, 2012, 06:03:55 AM
I have the same issue. I remember most of the password. It's just one or two characters that are off. Anyone else found a solution?

download your self a copy of backtrack 5. There are some good brute force password manipulators in there. It will give you a list of all possibilities. You just have to try them out.

I believe BT5 doesn't include this specific bruteforcer.
That said, use the pywallet script and run it with a batch file including a list of the passwords you wanted to test. That'll speed up the process.


Title: Re: Decryption on my own encrypted wallet.dat file?
Post by: shakaru on March 13, 2012, 06:26:53 AM
I have the same issue. I remember most of the password. It's just one or two characters that are off. Anyone else found a solution?

download your self a copy of backtrack 5. There are some good brute force password manipulators in there. It will give you a list of all possibilities. You just have to try them out.

I believe BT5 doesn't include this specific bruteforcer.
That said, use the pywallet script and run it with a batch file including a list of the passwords you wanted to test. That'll speed up the process.

Ok, then if memory serves me right. BT3 should have it.


Title: Re: Decryption on my own encrypted wallet.dat file?
Post by: GideonGono on March 13, 2012, 11:37:55 AM
I have the same issue. I remember most of the password. It's just one or two characters that are off. Anyone else found a solution?

download your self a copy of backtrack 5. There are some good brute force password manipulators in there. It will give you a list of all possibilities. You just have to try them out.

I believe BT5 doesn't include this specific bruteforcer.
That said, use the pywallet script and run it with a batch file including a list of the passwords you wanted to test. That'll speed up the process.

Ok, then if memory serves me right. BT3 should have it.

May I know the name of the tool? I am on a low bandwidth connection for the time being so I cannot download BT3, I only have BT5 already installed.


Title: Re: Decryption on my own encrypted wallet.dat file?
Post by: John (John K.) on March 14, 2012, 12:43:46 PM
I have the same issue. I remember most of the password. It's just one or two characters that are off. Anyone else found a solution?

download your self a copy of backtrack 5. There are some good brute force password manipulators in there. It will give you a list of all possibilities. You just have to try them out.

I believe BT5 doesn't include this specific bruteforcer.
That said, use the pywallet script and run it with a batch file including a list of the passwords you wanted to test. That'll speed up the process.

Ok, then if memory serves me right. BT3 should have it.

May I know the name of the tool? I am on a low bandwidth connection for the time being so I cannot download BT3, I only have BT5 already installed.
No idea for me. I've used BT since the first edition (beta) and I didn't see anything specifically for cracking bitcoin wallets.


Title: Re: Decryption on my own encrypted wallet.dat file?
Post by: GideonGono on March 15, 2012, 01:07:48 AM
No idea for me. I've used BT since the first edition (beta) and I didn't see anything specifically for cracking bitcoin wallets.

It doesn't have to be for bitcoin wallets specifically but anything that has a high likelihood of working.