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June 19, 2019, 04:07:41 PM *
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Author Topic: [overview] Recover Bitcoin from any old storage format  (Read 2326 times)
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LoyceV
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April 24, 2019, 12:18:57 PM
Last edit: June 07, 2019, 05:44:56 PM by LoyceV
 #41

I found several topics with good information that I haven't had the time to check (and Merit) thoroughly, so I'll leave them here:
Re: How to decode an encrypted WIF key ?
Multibit HD seed in Electrum
Old private key problem that I haven't seen until today
I have recovered an old wallet.aes.json from Blockchain.info but its a raw key

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April 24, 2019, 10:27:54 PM
 #42

I have a wallet.aes.json file backup from blockchain.info (from 2013), I know first password, but I forgot second, I know about which might be but I do not know the exact variation, 12 phrase word is lost too.
You will likely not be able to open that file in any other wallet application...

There is no way to recover a "2nd password" from a blockchain.info wallet, except via brute force... And that will take a very long time unless you have a very good idea of what the password was.

The best you could probably hope for is a script (perhaps modified btcrecover) that will allow you to test 2nd password variations? As far as I'm aware, it only supports trying to brute force the first password.

It wouldn't also hurt to know when the wallet was created as the encryption schemes and KDF iterations changed even within the same wallet version.

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April 25, 2019, 12:51:17 AM
 #43

The wallet was created in April or May 2013, and backup file is from June 2013.
I have 2 wallets on one email address, first wallet works perfectly without second password, second wallet has 2nd password and I forgot it.
I use a few passwords for all wallets, and probably making a mistake in one letter or number, but how can I use brute force or backup of wallet?

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April 25, 2019, 04:06:34 AM
Last edit: May 15, 2019, 04:00:28 AM by pooya87
Merited by malevolent (1)
 #44


this is a "broken code" problem which you don't really see with "wallets" that people use.
the interesting thing about that topic is that it showed how broken the code of many of these tools are (even Electrum1) they don't validate the input private key properly! instead they base58-decode, drop the extra bytes instead of validating them and use the leftover as the "key"!

edit: 1 by the way, this was fixed in Electrum.

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June 16, 2019, 11:23:47 AM
 #45

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