wallet.dat password question | Bitcointalksearch.org

f___o

newbie

Activity: 9

Merit: 0

Quote from: gmaxwell on June 01, 2016, 12:46:48 PM

In particular, the wallet will generate new addresses after the password was changed that the old wallet won't know about. So your old backup will become increasingly invalid over time.

The wallet also re runs the benchmark to determine the number of SHA-512 rounds when setting a new password. On a more powerful system it will improve the defense against brute force attacks on the wallet file.

bob123

legendary

Activity: 1624

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Quote from: twinkletoes007 on June 05, 2016, 10:44:20 PM

Quote from: fbueller on June 02, 2016, 10:47:26 AM

The password is purely for encryption purposes. If someone has an older wallet.dat and can guess the password they'll get the private keys. Sweep if you're not sure!

I learned the hard way. Sad

How so?

Got an old backup cracked or current ?

twinkletoes007

newbie

Activity: 19

Merit: 0

Quote from: fbueller on June 02, 2016, 10:47:26 AM

The password is purely for encryption purposes. If someone has an older wallet.dat and can guess the password they'll get the private keys. Sweep if you're not sure!

I learned the hard way. Sad

fbueller

sr. member

Activity: 412

Merit: 287

The password is purely for encryption purposes. If someone has an older wallet.dat and can guess the password they'll get the private keys. Sweep if you're not sure!

gmaxwell

staff

Activity: 4242

Merit: 8672

In particular, the wallet will generate new addresses after the password was changed that the old wallet won't know about. So your old backup will become increasingly invalid over time.

glerant

sr. member

Activity: 565

Merit: 316

Quote from: achow101 on May 25, 2016, 09:26:05 PM

Quote from: aarons6 on May 25, 2016, 08:40:57 PM

Quote from: achow101 on May 25, 2016, 08:30:20 PM

Quote from: aarons6 on May 25, 2016, 08:27:56 PM

i have my wallet encrypted on my pc..
i just changed this password.. i was wondering if i have to reback it up or if the backup i have, which is secure, is still ok with the old password.

Your question is not clear.

If you backup your current wallet, then the backup would have the new password.

If you want to restore an old backup created before you changed the password, then it will use the old password.

i was just wondering if there was something in the system that would make my old backup not work if i changed the password.

The old backup will still work, you will just need to use your old password and any addresses generated after changing your password will not be in your old backup.

Indeed. Encrypting or changing the password on the wallet.dat you are currently using will not be reflected on any copies you have lying around on cloud drives or other media.
You need to be a bit careful!

achow101

staff

Activity: 3458

Merit: 6793

Just writing some code

Quote from: aarons6 on May 25, 2016, 08:40:57 PM

Quote from: achow101 on May 25, 2016, 08:30:20 PM

Quote from: aarons6 on May 25, 2016, 08:27:56 PM

i have my wallet encrypted on my pc..
i just changed this password.. i was wondering if i have to reback it up or if the backup i have, which is secure, is still ok with the old password.

Your question is not clear.

If you backup your current wallet, then the backup would have the new password.

If you want to restore an old backup created before you changed the password, then it will use the old password.

i was just wondering if there was something in the system that would make my old backup not work if i changed the password.

The old backup will still work, you will just need to use your old password and any addresses generated after changing your password will not be in your old backup.

aarons6

legendary

Activity: 1736

Merit: 1006

Quote from: achow101 on May 25, 2016, 08:30:20 PM

Quote from: aarons6 on May 25, 2016, 08:27:56 PM

i have my wallet encrypted on my pc..
i just changed this password.. i was wondering if i have to reback it up or if the backup i have, which is secure, is still ok with the old password.

Your question is not clear.

If you backup your current wallet, then the backup would have the new password.

If you want to restore an old backup created before you changed the password, then it will use the old password.

i was just wondering if there was something in the system that would make my old backup not work if i changed the password.

achow101

staff

Activity: 3458

Merit: 6793

Just writing some code

Quote from: aarons6 on May 25, 2016, 08:27:56 PM

i have my wallet encrypted on my pc..
i just changed this password.. i was wondering if i have to reback it up or if the backup i have, which is secure, is still ok with the old password.

Your question is not clear.

If you backup your current wallet, then the backup would have the new password.

If you want to restore an old backup created before you changed the password, then it will use the old password.

aarons6

legendary

Activity: 1736

Merit: 1006

i have my wallet encrypted on my pc..
i just changed this password.. i was wondering if i have to reback it up or if the backup i have, which is secure, is still ok with the old password.

Topic: wallet.dat password question (Read 1294 times)