user99807: I would like to know if it's possible to change private key of bitcoin wallet via rpc call to bitcoind.
Thank you for your answers

user95422: No, your public key are generated from your private key it cannot be changed.
Private key have one public key and each public key have one adress

user99431: Which key do you want to change? A wallet stores your private keys of your UTXOs. You could change your private key, if you are able to find a hash collision with another (Private,Public)-Key-Pair that equals the OP_HASH160(Orig_Pub_Key) == OP_HASH160(HASHCOLLISIONPUBKEY).
Hopefully, this is not possible in a finite time...
If it is about your own wallet password, of course you can do that. The only information that is important is your (Pub,Priv)-Keypair. Don't forget that you need the public key too, to unlock your coins!

99807: <p>I would like to know if it's possible to change private key of bitcoin wallet via rpc call to bitcoind.</p>

<p>Thank you for your answers</p>
 95422: <p>No, your public key are generated from your private key it cannot be changed.</p>

<p>Private key have one public key and each public key have one adress</p>
 99431: <p>Which key do you want to change? A wallet stores your private keys of your <code>UTXOs</code>. You could change your private key, if you are able to find a hash collision with another (Private,Public)-Key-Pair that equals the <code>OP_HASH160(Orig_Pub_Key) == OP_HASH160(HASHCOLLISIONPUBKEY)</code>.
Hopefully, this is not possible in a finite time...</p>

<p>If it is about your own wallet password, of course you can do that. The only information that is important is your (Pub,Priv)-Keypair. Don't forget that you need the public key too, to unlock your coins!</p>
