Paper Wallet Secure???? | Bitcointalksearch.org

canton

sr. member

Activity: 261

Merit: 285

Quote from: b-trading on November 05, 2014, 11:37:19 AM

how secure the paper wallet if i create and print it from the websites like bitaddress or etc, do the owner of that website known about the private key Huh

When you use my own generator (bitcoinpaperwallet.com) there's a helpful "security checklist" that tells you how secure you're being.

https://bitcoinpaperwallet.com/bitcoinpaperwallet/generate-wallet.html

The trickiest part is creating an Ubuntu Live CD with the wallet generator pre-installed (so that you never have to go online). I actually sell a product to make this easy:

https://bitcoinpaperwallet.com/ubuntu-linux-live-bootable-cd/

Simon8x

hero member

Activity: 568

Merit: 500

Quote from: b-trading on November 18, 2014, 07:39:18 AM

thank you to you all guys who answer the thing that for me is so important about paper wallet, i think i have all the answer here in this thread, but may i ask something that the most important about paper wallet, my question is : can we create a private key with out using website service like bitaddress.org ?

Bitcoin private key is just a 256bit number, and so you can create a private key by creating a 256bit random number such as by rolling a dice repeatedly.
Please check https://bitcointalksearch.org/topic/dice-generated-random-numbers-and-conversion-into-privatepublic-key-pair-297077 for details.

b-trading

sr. member

Activity: 434

Merit: 250

thank you to you all guys who answer the thing that for me is so important about paper wallet, i think i have all the answer here in this thread, but may i ask something that the most important about paper wallet, my question is : can we create a private key with out using website service like bitaddress.org ?

Raeg

member

Activity: 66

Merit: 10

Quote from: lamaze on November 08, 2014, 10:46:51 AM

Yes... Ive been using paper wallet ever since.

Well they're only secure if you've taken all the appropriate security measures. They can still go bye-bye in the future so be careful.

axel2078

full member

Activity: 532

Merit: 100

Quote from: deepceleron on November 05, 2014, 08:55:05 PM

Instead of running it on an OS that may already be infected, backdoored, keylogged or screenshotted by a virus or trojan horse you've already got, I would recommend running a liveCD and generating the key there. That way there is no chance of an eavesdropper intercepting the key, and it will not be written to the hard drive accidentally even as memory page file. See the last link in my signature.

This is good advice. I tried this the other day and and realized a couple things. First, generating the paper wallet offline from the bitaddress.org.html file worked fine. 2nd, when I tried to add encryption to the paper wallet, it would never complete because the browser could not execute javascript code. I tried a different live CD and ran into the same issue. In the end, I disconnected my iMac from the internet, ran the offline generator, and then encrypted the paper wallet. I then moved it to a USB drive (while still offline). Maybe some live CDs can execute javascript within the browser and I just had bad luck with the two I chose. I'm not sure. I know this isn't the most secure option of generating paper wallets, but it is what it is.

Kakmakr

legendary

Activity: 3458

Merit: 1960

Leading Crypto Sports Betting & Casino Platform

If you password protect it, with a key phrase, write it down. ^Smile^
I forgot to do that, and I lost some coins ^Frown upside Down^

apolena

newbie

Activity: 4

Merit: 0

Quote from: b-trading on November 10, 2014, 06:32:38 AM

Ok, lets say we have securely safe our paper wallet and save our private key correctly,and we know there are many sites that give a service to restore paper wallet base on private key instead blockchain.info or coinbase, but is there any possibility to restore the private key, if there is no service like blockchain.info or coinbase do...and if that happen what will gona do to restore ouw paper wallet

scan the QR code and copy the private key and import it into bitcoin core which would exist after years.. base58 is supported by bitcoin core.

b-trading

sr. member

Activity: 434

Merit: 250

Ok, lets say we have securely safe our paper wallet and save our private key correctly,and we know there are many sites that give a service to restore paper wallet base on private key instead blockchain.info or coinbase, but is there any possibility to restore the private key, if there is no service like blockchain.info or coinbase do...and if that happen what will gona do to restore ouw paper wallet

lamaze

member

Activity: 72

Merit: 10

Yes... Ive been using paper wallet ever since.

Dabs

legendary

Activity: 3416

Merit: 1912

The Concierge of Crypto

3 copies is better. You should have two backups, plus your original.

Quote

Backing up your laptop to an SD Card in the same laptop is #notabackup
Backing up to a hard drive that is 6 inches away from your computer is #notabackup
Backing up your Gmail to another Gmail account is #notabackup
Backing up your book by copying it to another folder is #notabackup
The photos that are still in your camera memory are #notabackup

3 copies of anything you care about - Two isn't enough if it's important.
2 different formats - Example: Dropbox+DVDs or Hard Drive+Memory Stick or CD+Crash Plan, or more
1 off-site backup - If the house burns down, how will you get your memories back?

CryptoHeaven

member

Activity: 91

Merit: 10

Quote from: fronti on November 06, 2014, 04:14:18 AM

Quote from: deepceleron on November 05, 2014, 08:55:05 PM

Instead of running it on an OS that may already be infected, backdoored, keylogged or screenshotted by a virus or trojan horse you've already got, I would recommend running a liveCD and generating the key there. That way there is no chance of an eavesdropper intercepting the key, and it will not be written to the hard drive accidentally even as memory page file. See the last link in my signature.

but make sure that the liveCD is not infected by anybody..
also look at the random generator of the liveCD.. make sure that you get good random numbers.
you see a loot too look at to get a secure paper wallet.

and then, make sure if you print the wallet, that the printer is not infected or store the printed files. (some printer do this)

Guys you're way too paranoid IMO. Paper wallets are as safe as they get, don't make it even more confusing for the OP. Poor guy !

kanggoroo

full member

Activity: 154

Merit: 100

and keep away your paper wallet from water and fire , you dont want to regret that later.
i have a friend who forgot to take paper wallet from his trouser pocket before he put that to wash machine.
and he remember that after 2 days , so bye bye bitcoin Tongue

BayAreaCoins

legendary

Activity: 3878

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Owner at AltQuick.com & FreeBitcoins.com

I use and recommend paper wallets.

PomityCharles

newbie

Activity: 1

Merit: 0

bitaddress.org is opensourced a quick inspection of the code shows that no information is send to the server. the owner will not know about your private key.

szmarco

hero member

Activity: 574

Merit: 500

Quote from: b-trading on November 07, 2014, 01:48:19 PM

Quote from: Dabs on November 05, 2014, 11:40:39 AM

Download the website, and open it offline on a disconnected computer.

that is the best way to create a paper wallet thank you very much, now i have the answer. i have a plan to store my btc in a paper wallet for a long time, may be 3 - 5 years, from now.

you are not alone.
I have done it as you said.

DarKSpectrE

full member

Activity: 149

Merit: 100

Quote from: b-trading on November 07, 2014, 01:48:19 PM

Quote from: Dabs on November 05, 2014, 11:40:39 AM

Download the website, and open it offline on a disconnected computer.

that is the best way to create a paper wallet thank you very much, now i have the answer. i have a plan to store my btc in a paper wallet for a long time, may be 3 - 5 years, from now.

Lol, some people who chose not to sell their BTC holdings when the price was around $1000 are regretting big time. It's unrealistic to expect BTC's price to go beyond $500 again. It's overvalued. The bubble's been long overdue to burst.

deepceleron

legendary

Activity: 1512

Merit: 1032

Quote from: silvestar on November 07, 2014, 08:45:26 AM

Quote from: Vocal on November 06, 2014, 10:44:07 AM

Paper wallet better than cold storage.

Why is that the case? Can anyone share their opinions on that?
I always consider paper wallet is as safe as cold wallet, as long as they are both created in a safe way.

That's just a post count spammer posting mindless junk. The reason why this forum is becoming useless. I already reported yesterday but they aren't modded to hell yet.

They are in most cases the same thing.

Quote from: b-trading on November 07, 2014, 01:41:24 PM

what the meaning of a good random number??? i don't understand, and it's a nice info to know that the printer can store the file printed...

Bitcoin addresses are based on keys that are and must be completely random numbers. Flaws deliberately introduced into or bugs in the implementation of operating system random number generators can reduce your security. Making your own key, i.e. with a brainwallet generator, is a surefire way to generate a nonrandom key weak enough that others can steal your bitcoins.

b-trading

sr. member

Activity: 434

Merit: 250

Quote from: Dabs on November 05, 2014, 11:40:39 AM

Download the website, and open it offline on a disconnected computer.

that is the best way to create a paper wallet thank you very much, now i have the answer. i have a plan to store my btc in a paper wallet for a long time, may be 3 - 5 years, from now.

b-trading

sr. member

Activity: 434

Merit: 250

Quote from: fronti on November 06, 2014, 04:14:18 AM

Quote from: deepceleron on November 05, 2014, 08:55:05 PM

Instead of running it on an OS that may already be infected, backdoored, keylogged or screenshotted by a virus or trojan horse you've already got, I would recommend running a liveCD and generating the key there. That way there is no chance of an eavesdropper intercepting the key, and it will not be written to the hard drive accidentally even as memory page file. See the last link in my signature.

but make sure that the liveCD is not infected by anybody..
also look at the random generator of the liveCD.. make sure that you get good random numbers.
you see a loot too look at to get a secure paper wallet.

and then, make sure if you print the wallet, that the printer is not infected or store the printed files. (some printer do this)

what the meaning of a good random number??? i don't understand, and it's a nice info to know that the printer can store the file printed...thank you verymuch

Kakmakr

legendary

Activity: 3458

Merit: 1960

Leading Crypto Sports Betting & Casino Platform

I am lucky, I recently go hold of some computers, that was going for recycling.
I managed to put some together and used it to print 300+ paper wallets offline.
They are now in pieces and being recycled, so nobody will ever get their hands on those private keys. ^Smile^

I drop some satoshi's towards them, and will destroy them, once it's sweeped onto online wallets.

I am a bit paranoid, when it come to things like this, so this might be a bit extreme. ^LoL^

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