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Author Topic: Basic key question on a core wallet.  (Read 186 times)
philipma1957
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February 24, 2019, 05:10:51 PM
 #1

Okay

wallet has 2 addresses

ABCD  private key is 1234

EFGH private key is ?

Some one grabs  private key for address ABCD  can he go after address EFGH?

I know he can try to grab coins in ABCD  which would be emptied by me.

I am under assumption that second address  EFGH  has a completely different key and can not be attacked with the private key from the first address. Correct?


I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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ETFbitcoin
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February 24, 2019, 05:21:16 PM
Merited by HeRetiK (1)
 #2

Some one grabs  private key for address ABCD  can he go after address EFGH?

No, unless your master public key also grabbed and your wallet generates non-hardened address. Most wallet generates hardened address, so you don't need to worry about this problem.

If your wallet don't use seed/HD derivation/mnemonic, you don't need to worry about it unless your wallet uses bad random method.

I am under assumption that second address  EFGH  has a completely different key and can not be attacked with the private key from the first address. Correct?

Yes

HeRetiK
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February 24, 2019, 06:42:49 PM
 #3

Some one grabs  private key for address ABCD  can he go after address EFGH?

No, unless your master public key also grabbed and your wallet generates non-hardened address. Most wallet generates hardened address, so you don't need to worry about this problem.

If your wallet don't use seed/HD derivation/mnemonic, you don't need to worry about it unless your wallet uses bad random method.

I am under assumption that second address  EFGH  has a completely different key and can not be attacked with the private key from the first address. Correct?

Yes

Note that an adversary that has compromised your system and has access to your wallet file (and managed to get ahold of your encryption passphrase using, say, a keylogger) will be able to access all coins within the wallet, regardless of them being held in different addresses.

If only a single private key is exposed (eg. because you exported it and moved it onto a different device) than your other keys are safe within the limitations that ETFbitcoin described.

philipma1957
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February 24, 2019, 07:18:05 PM
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Some one grabs  private key for address ABCD  can he go after address EFGH?

No, unless your master public key also grabbed and your wallet generates non-hardened address. Most wallet generates hardened address, so you don't need to worry about this problem.

If your wallet don't use seed/HD derivation/mnemonic, you don't need to worry about it unless your wallet uses bad random method.

I am under assumption that second address  EFGH  has a completely different key and can not be attacked with the private key from the first address. Correct?

Yes

Note that an adversary that has compromised your system and has access to your wallet file (and managed to get ahold of your encryption passphrase using, say, a keylogger) will be able to access all coins within the wallet, regardless of them being held in different addresses.

If only a single private key is exposed (eg. because you exported it and moved it onto a different device) than your other keys are safe within the limitations that ETFbitcoin described.

I had a core  crash I pulled the address ABCD  the private key for it 1234

I made a new wallet imported address ABCD  the private key 1234   emptied  the ABCD address and moved the coins  to an exchange

I am now looking to  move coins back to a new address from that new wallet/core  as I don't feel like   making a newer core/wallet  

as it takes forever to synch.


I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
HeRetiK
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February 24, 2019, 09:08:59 PM
 #5

I had a core  crash I pulled the address ABCD  the private key for it 1234

I made a new wallet imported address ABCD  the private key 1234   emptied  the ABCD address and moved the coins  to an exchange

I am now looking to  move coins back to a new address from that new wallet/core  as I don't feel like   making a newer core/wallet  

as it takes forever to synch.

The imported private key belong to your old address ABCD as generated by your old wallet is completely unrelated to the private keys of your new wallet. Your new wallet is unaffected by whatever happens to the private key of the old address ABCD. Just be aware that the regular caveats of using a desktop wallet still apply (ie. depending on the amount involved, consider switching to a cold storage or hardware wallet solution, as desktop wallets or only as secure as your system).

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February 24, 2019, 11:20:54 PM
Merited by bones261 (2), LFC_Bitcoin (1)
 #6

imported private keys have no effect on any other key in your wallet. Knowing the private key for an imported key will not result in any other private key in your wallet being known.

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