How safe is an Encrypted Bitcoin core wallet with a strong password? - page 2.

ANTIcentralized

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Quote from: cuddaloreappu on July 18, 2014, 12:38:09 PM

i mean encrypting wallet with a very strong password and doing this in a freshly installed windows pc.

That will take care of keyloggers right!

Now tell me how safe is such an encrypted wallet

This would take care of keyloggers when you create your password, but would not necessarily take care of keyloggers when you later need to input your password as your computer could potentially become compromised in the future.

grue

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Quote from: ranochigo on July 18, 2014, 09:46:28 PM

Not much, Windows is known to have a lot of vulnerabilities, since you are exposed to the internet, you might get a malware. Installing Linux on an offline computer would be significantly safer.

windows does have vulnerabilities, but they're not so bad to the point that connecting a reasonably up-to-date windows machine to the internet will get you infected.

Golph

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Quote from: cuddaloreappu on July 18, 2014, 11:56:52 AM

How safe is an Encrypted Bitcoin core wallet with a strong password?

Actually it is very very safe if you have strong password, you just have to avoid keylogger which is easy...

ranochigo

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Quote from: cuddaloreappu on July 18, 2014, 09:33:08 PM

Quote from: grue on July 18, 2014, 01:56:35 PM

Quote from: shorena on July 18, 2014, 01:49:48 PM

Quote from: cuddaloreappu on July 18, 2014, 12:38:09 PM

i mean encrypting wallet with a very strong password and doing this in a freshly installed windows pc.

That will take care of keyloggers right!

Now tell me how safe is such an encrypted wallet

[...]
A fresh Windows will most likely be not fully updated, but unless you use something old (e.g. WinXP without Service packs) you should be fine. Its also unlikely that you "just get a keylogger" as long as you are carefull. Carefull as in: dont download something from shady sources, dont download any new alt coin wallet just because, etc. pp.

more importantly, make sure your operating system install disk is clean. if you're downloading pirated windows, make sure you check the .iso's checksum against the ones published by microsoft.

Yeah my friend has original win 8 , we are planning to fresh install, update it, then install firefox and bitcoin core, then transfer all coins and encrypt with a very strong password.

Now is it safe?

Not much, Windows is known to have a lot of vulnerabilities, since you are exposed to the internet, you might get a malware. Installing Linux on an offline computer would be significantly safer.

cuddaloreappu

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Quote from: grue on July 18, 2014, 01:56:35 PM

Quote from: shorena on July 18, 2014, 01:49:48 PM

Quote from: cuddaloreappu on July 18, 2014, 12:38:09 PM

i mean encrypting wallet with a very strong password and doing this in a freshly installed windows pc.

That will take care of keyloggers right!

Now tell me how safe is such an encrypted wallet

[...]
A fresh Windows will most likely be not fully updated, but unless you use something old (e.g. WinXP without Service packs) you should be fine. Its also unlikely that you "just get a keylogger" as long as you are carefull. Carefull as in: dont download something from shady sources, dont download any new alt coin wallet just because, etc. pp.

more importantly, make sure your operating system install disk is clean. if you're downloading pirated windows, make sure you check the .iso's checksum against the ones published by microsoft.

Yeah my friend has original win 8 , we are planning to fresh install, update it, then install firefox and bitcoin core, then transfer all coins and encrypt with a very strong password.

Now is it safe?

grue

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Quote from: shorena on July 18, 2014, 01:49:48 PM

Quote from: cuddaloreappu on July 18, 2014, 12:38:09 PM

i mean encrypting wallet with a very strong password and doing this in a freshly installed windows pc.

That will take care of keyloggers right!

Now tell me how safe is such an encrypted wallet

[...]
A fresh Windows will most likely be not fully updated, but unless you use something old (e.g. WinXP without Service packs) you should be fine. Its also unlikely that you "just get a keylogger" as long as you are carefull. Carefull as in: dont download something from shady sources, dont download any new alt coin wallet just because, etc. pp.

more importantly, make sure your operating system install disk is clean. if you're downloading pirated windows, make sure you check the .iso's checksum against the ones published by microsoft.

shorena

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Quote from: cuddaloreappu on July 18, 2014, 12:38:09 PM

i mean encrypting wallet with a very strong password and doing this in a freshly installed windows pc.

That will take care of keyloggers right!

Now tell me how safe is such an encrypted wallet

What do you want to hear?

10 guesses per second (per core I assume) if you have a password with 12 symbols, which can be any char or number you have
(2*26+10)¹²~=3.22 *10²¹ possible passwords. In order to test them all with a 120 Core CPU you need 3.22*10²¹/1200*60s*60m*24h*365d ~= 85 billion years. Bruteforce is basically out of the question unless someone has a very short list that happens to have your password in it.

A fresh Windows will most likely be not fully updated, but unless you use something old (e.g. WinXP without Service packs) you should be fine. Its also unlikely that you "just get a keylogger" as long as you are carefull. Carefull as in: dont download something from shady sources, dont download any new alt coin wallet just because, etc. pp.

cuddaloreappu

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i mean encrypting wallet with a very strong password and doing this in a freshly installed windows pc.

That will take care of keyloggers right!

Now tell me how safe is such an encrypted wallet

gmaxwell

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The software uses best-practices in handling, it's adaptively strengthened with a cryptographic KDF and salted (and cracks at no faster than 10 per second on the user's CPU)— but users (including myself) stink at producing passwords or if they manage to produce a good one, they can't remember it.

No amount of encryption can protect you from poor passwords, keyboard sniffers, or other local machine compromises... or from forgetting or disk corruption. The wallet encryption helps against some things, but the rest is up to you currently.

Justin00

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Not very if you have a key logger and hacker can some how retrieve your wallet.dat

It is safer than having an easy to guess password and obviously having no password would be like handing it on a platter.

I would do this (after you have finished with the client each time) Rename wallet.dat to something else, move it out of the normal directory (preferably off the PC). You would still be vulnerable to key logger and 1000 other scenarios, but if someone got access to your PC they might search/scan for wallet.dat and hopefully moves on when they can not find it.

cuddaloreappu

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How safe is an Encrypted Bitcoin core wallet with a strong password?

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