private key -second password HELPPPPPPPPPPPP

[iamanewbie]

please help me-
i am very unlucky

i have format my pc and i lost my saved identifier, password and second password (i used random hard password and second password, so i dont remeber it)

all what i have saved in my email is the private key

what can i do now? i wanted to import it to blockchain but the site say invalid key format, probable because i used second password???

please help me, for me this 3 btc loss is too big

[hilariousandco]

You could try another client and try import the private key that way and see if that helps.

P.s I don't know why you would go to all that trouble with complex passwords when you store your private key in your email.

[iamanewbie]

which client i can try using to import my private key?
and if i import succesfully will be can send money if my wallet = key was double encrypted?

[hilariousandco]

I'm not sure how the second password works exactly, I read someone say that it's only to send funds via blockchain.info but that would defeat the purpose as you could just download the wallet to bypass it. Get a lite client like electrum or mycelium and try import the key.

[btchris]

I'm not sure you know what you have, but I could be wrong...

This "private key" that you have, how long is it? What are the first 3 letters? If it actually is a private key, then it will be easy to help you import it. If it's something else, it may not be easy (or possible)...

[iamanewbie]

iaZDYzeqTuZdxHXGV6XXXXXXAo0QYthIMnTlec1QJM4wHqpnn8AcX6GBgV1nK/oa75Bi3BCPA5bF6xjWAgJi A==

this is my key - i changed some letter with X

[btchris]

I'm not sure how the second password works exactly

In short: bc.i wallets are json files. The "main" password AES-encrypts the entire file (including all addresses and private keys), which is then base-64 encoded. The "second" password, which is optional, AES-encrypts each individual private key. I assume the point is to allow logging into bc.i with your main password from untrusted locations to check your balance without having to risk your funds (as long as you don't type in your second password of course).

[notlist3d]

I would remove key.  Try importing into like multibit or blockchain, etc.  If it lets you import then you are good.  If not you have some more troubleshooting to do.

[btchris]

iaZDY ...

this is my key - i changed some letter with X

That looks like an encrypted blockchain wallet, except that it's too short. Is it longer than this? (don't post it here...)

If this is the only form of backup that you have, you will need your two passwords to gain access to your funds. If the password was long and random as you've said, there's no way to retrieve or guess it...

[iamanewbie]

this is the full lenght private key which i saved ...

i cant import in bockchain .. multibit has option to import only file, not a key, bitcoin armory import only paper wallet, not key ... electrum crash/ close without any response when i try using restore an existing wallet from a seed option
any other ideea?

[btchris]

this is the full lenght private key which i saved ...

In that case, it's the right length to be a private key encrypted using blockchain's "second password" method. You won't need the main password, but you will need the second password.

Did you make any changes to the "Debugging" settings in your account? In particular, if you changed the "PBKDF2 Iterations" setting, you will also need that.

[iamanewbie]

i dont changed anything in debugging but i cant add this key to blockchain - Error importing private key: Unknown Key Format
how can i add ?

[crazy-pilot]

i dont changed anything in debugging but i cant add this key to blockchain - Error importing private key: Unknown Key Format
how can i add ?

Are you sure it is the private key? I think this is a public key. How did you get it from blockchain.info?

[btchris]

this is the full lenght private key which i saved ...

In that case, it's the right length to be a private key encrypted using blockchain's "second password" method. You won't need the main password, but you will need the second password.

Did you make any changes to the "Debugging" settings in your account? In particular, if you changed the "PBKDF2 Iterations" setting, you will also need that.

In addition to your second password, you will also need something called your "shared key" which is stored on the Blockchain servers or in a full wallet backup (it is used as an encryption salt). I assume that Blockchain will require you to somehow prove ownership of your account before they will provide this.

Do you know your second password? Did you use any of the Blockchain options to take a backup of your wallet?

[btchris]

i dont changed anything in debugging but i cant add this key to blockchain - Error importing private key: Unknown Key Format
how can i add ?

Are you sure it is the private key? I think this is a public key. How did you get it from blockchain.info?

Pretty sure. It's Base64, so it's not in a "standard" format, and it's exactly the same length as a blockchain.info encrypted private key that I have here in a test wallet.

[iamanewbie]

i have the shared key, because this was together with the private key when i exported from blockchain unencrypted (and saved in my email)
first i will import again somehow to my new blockchain account, later hope i will remember my second password for tranzaction
--so please how can i import in blockchain if the site Error importing private key: Unknown Key Format

[btchris]

i have the shared key, because this was together with the private key when i exported from blockchain unencrypted (and saved in my email)
first i will import again somehow to my new blockchain account, later hope i will remember my second password for tranzaction
--so please how can i import in blockchain if the site Error importing private key: Unknown Key Format

Do you have the entire text (starting with "{ guid" and ending with "}"? If so, you should copy and paste the entire thing into the "Import Wallet" page. You'll still need to figure out your second password before you can access your funds, of course.

Edited to add: if you do have the entire text, than you do have your identifier. It's immediately following the "guid"

[iamanewbie]

wow, yes, i find the identifier - but still not remember my first password, because was a random generated long passord
i have the shared key too
and the long - as you say base coded private key - but blockchain dont accept me to add this key
now whats to do exactly. which step i need follow to can add this key?

[btchris]

which step i need follow to can add this key?

Did you see my question and comment above?

Do you have the entire text (starting with "{ guid" and ending with "}"? If so, you should copy and paste the entire thing into the "Import Wallet" page.

I think this will replace whichever wallet you currently have in your account. It's a new account with nothing in it, is that correct?

[iamanewbie]

sorry first i have not understand
now i have copy all the entire text (starting with "{ guid" and ending with "}" in Import Wallet section but say incorect password - so this cant be used
i need somehow to import the private key first