Bitcoin Forum

Bitcoin => Bitcoin Technical Support => Topic started by: PaperWalletN00B on February 26, 2014, 05:15:49 PM



Title: Cold Storage? Is this secure!
Post by: PaperWalletN00B on February 26, 2014, 05:15:49 PM
Create TailsOS USB

Boot into Tails and download BitAddress from GitHub

Disconnected from Internet & generate a private and public key....

Send 0.001 Test amount to the wallet.....

Store private and public key on a bit of paper!

Is this secure? Can I sleep without worrying about my Bitcoin getting stolen!

----------------------

Bringing back online...

Create Blockchain.info wallet.

Import private key and sweep the address to take back the 0.001

Is this a good way to bring online?


Title: Re: Cold Storage? Is this secure!
Post by: PaperWalletN00B on February 26, 2014, 07:09:26 PM
Bump!


Title: Re: Cold Storage? Is this secure!
Post by: cooldgamer on February 26, 2014, 07:30:43 PM
Should be secure, as Tails doesn't go online after the address has been made.  As for bringing it back, I'd recommend using a wallet like Electrum. Web-wallets are just a bad idea, especially if you're dealing with amounts of BTC large enough to need cold storage :)


Title: Re: Cold Storage? Is this secure!
Post by: PaperWalletN00B on February 26, 2014, 07:32:15 PM
Yeah, the bringing back online seems a little careless using web wallets, I don't plan to bring my Bitcoins back online for a while does my storage process sound secure?


Title: Re: Cold Storage? Is this secure!
Post by: PaperWalletN00B on February 26, 2014, 07:45:16 PM
Bump :(! I want to secure my coins by tonight!


Title: Re: Cold Storage? Is this secure!
Post by: PaperWalletN00B on February 26, 2014, 08:01:10 PM
Having a nervous breakdown here...


Title: Re: Cold Storage? Is this secure!
Post by: Abdussamad on February 26, 2014, 08:23:00 PM
Having a nervous breakdown here...

Then stop trying to do what you are doing. The way you are going about it you are likely to loose bitcoins because you made a mistake and not because somebody stole them from you.


Title: Re: Cold Storage? Is this secure!
Post by: PaperWalletN00B on February 26, 2014, 08:25:29 PM
How do I secure my Bitcoin then Abdussmad....


Title: Re: Cold Storage? Is this secure!
Post by: Automatic on February 26, 2014, 08:28:13 PM
Having a nervous breakdown here...

Then stop trying to do what you are doing. The way you are going about it you are likely to loose bitcoins because you made a mistake and not because somebody stole them from you.

This. Don't use technology you don't understand, or, wasn't aimed at complete idiots.


Title: Re: Cold Storage? Is this secure!
Post by: PaperWalletN00B on February 26, 2014, 08:31:52 PM
I'm new to Bitcoin, if you want Bitcoin to work you can't call non tech savy people idiots...


Title: Re: Cold Storage? Is this secure!
Post by: byt411 on February 26, 2014, 08:33:37 PM
I'm new to Bitcoin, if you want Bitcoin to work you can't call non tech savy people idiots...

I think that is perfectly secure, unless your pc had a keylogger installed.


Title: Re: Cold Storage? Is this secure!
Post by: casinocoin on February 26, 2014, 08:47:35 PM
I'm new to Bitcoin, if you want Bitcoin to work you can't call non tech savy people idiots...
Your solution sounds just fine, but I wouldn't load the priv key into blockchain.info wallet. If for some magical reason something happened in the process then you might start pointing fingers.
This is a great article on the most secure method from bitcoin wiki (https://en.bitcoin.it/wiki/How_to_import_private_keys)
Skip the MTGOX method obviously.


Title: Re: Cold Storage? Is this secure!
Post by: Automatic on February 26, 2014, 08:53:54 PM
I'm new to Bitcoin, if you want Bitcoin to work you can't call non tech savy people idiots...

https://en.wikipedia.org/wiki/Idiot_proof

It's common to call people idiots, don't feel bad. It's more of a generalized term. Imagine a internet service provider, they must get tens of thousands of calls per day, a tiny percentage of those people actually know what they're doing, the rest go "Duhh, router in da c00mp0tor, wats meh p4$$w0rd?", so, the level one technicians (Who probably don't know much themselves) have a flowchart explaining everything they have to say, so, that the idiot on the end of the phone doesn't get overloaded. Don't get me wrong, I'd love if my ISP would pick up the phone and listen to me when I say "Yup, I can verify the issue is at your end (from your modem, upstream), issue occurs even executing the task from it's perspective", but, then way to many "Duhh, I thunk i no wut im doing" types would pick up the phone and be like "omg slow net", when running 10Mbit NIC cards or something.

On top of that, I fail to see why you need to use tor, you're just opening your self up to a MITM attack. You're trying to be secure, not private.


Title: Re: Cold Storage? Is this secure!
Post by: Falkvinge on February 26, 2014, 09:32:58 PM
I did a write-up here (http://falkvinge.net/2014/02/10/placing-your-crypto-wealth-in-cold-storage-installing-armory-on-ubuntu/) on a cold storage setup that a few people have deemed secure. YMMV.


Title: Re: Cold Storage? Is this secure!
Post by: Abdussamad on February 26, 2014, 09:47:59 PM
How do I secure my Bitcoin then Abdussmad....

It's a gradual process. You learn bit by bit. Here are two options for you:

1) Continue down the paper wallet route. I don't recommend paper wallets but if you are careful you can do cold storage this way. You should start by trying to spend the 0.001 that you've sent to the paper wallet. Then when you're done that successfully you create a new paper wallet, load a small amount into it and spend from that one. Do this in increasing amounts until you become confident.

The sweep key approach in blockchain.info is fine. But you should read about change addresses as well:

https://en.bitcoin.it/wiki/Change

When you spend less than the total amount in an address some of it is sent back as change to another address. This is why you sweep the private key and not import it.



2) Use a bitcoin client that is designed for offline use. This will require a dedicated PC. There are two bitcoin clients that currently support offline wallets - Electrum and Armory. I recommend electrum. Install it on your online computer, play around with it and see how it works. Then, once you've got the hang of it, you can try for an offline install.


Title: Re: Cold Storage? Is this secure!
Post by: softron on February 27, 2014, 06:04:52 PM
Sounds safe enough , you should also read about BIP38 encryption.