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Author Topic: HOWTO: create a 100% secure wallet  (Read 273871 times)
christop
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March 24, 2013, 01:42:12 AM
 #1941

I think the guide to being secure doesn't need to be complex at all, though I don't know if the required technologies are available to write such a simple guide.

For example I think that an offline computer can send money without being connected to the internet. You just use your signing keys(you must also know manually how much bitcoins you have beforehand, without having any blockchain around. Here you can use blockchain.info to check that up, advised to access it through Tor. Then since you know how much you have, you use your private key on that offline computer and sign a transaction. Then you transfer that transaction with a usb key storage to your main computer which may be virus and trojan+keylogger infested and just execute the transaction. Voila!

Though are these technologies available. We would need a very simple program, one that doesn't like need the latest version of Ubuntu, not the full fledged bitcoin-qt, except if it can work in offline mode and it can allow to send Bitcoins without needing an internet connection.

The above are maybe a bit of half-baked thoughts.
The Bitcoin-qt client can create a raw transaction offline with the createrawtransaction command (in the console window), and then it can send a raw transaction with the sendrawtransaction command.

See https://en.bitcoin.it/wiki/Original_Bitcoin_client/API_Calls_list for a list of commands.

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Dabs
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March 24, 2013, 01:54:11 AM
 #1942

Armory allows offline transactions.

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tipton
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March 24, 2013, 04:07:34 AM
 #1943

Thanks for the info.
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March 24, 2013, 01:09:26 PM
 #1944

I downloaded BitCoin and installed the program, and it shows up in my C;/Program Files, but no where in there is a wallet.dat file. Does anyone know why?
If you r using win7 wallet.dat is located in users folder -> your account name -> AppData (NB! this is hidden folder) -> Roaming -> Bitcoin

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kzhang
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March 24, 2013, 03:32:49 PM
 #1945

Now I am using offline bitaddress + brainwallet to do all bitcoin things, so far so good.
Zackary
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March 24, 2013, 05:50:14 PM
 #1946

Here's my method on my Mac:

1) Login to wallet on blockchain.org and turn off WiFi
2) Navigate to "Receive Money" and generate a new address
3) Navigate to "Import/Export" and print paper wallet
4) Logout of blockchain.org and turn WiFi back on

The newly generated address was created offline and blockchain.info will not keep it since it never synced (online).
yordan
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March 24, 2013, 09:13:51 PM
 #1947

What's the deal with online wallets.  How do I know which ones to trust?
Blockhead
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March 24, 2013, 09:32:22 PM
 #1948

Thanks for the tips.
marymoore
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March 24, 2013, 11:56:10 PM
 #1949

What's the deal with online wallets.  How do I know which ones to trust?

I have opened an account with http://blockchain.info/ and the online wallet seems pretty good.

I think they have been around for a long time and they are quite trustable..

Another good option is https://instawallet.org, not sure about how safe it is though..

I hope this helps!
vonross2012
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March 25, 2013, 05:22:58 AM
 #1950

TY
spinner
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March 25, 2013, 10:27:52 AM
 #1951

thanks for the advice
Alex Troyanskij
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March 25, 2013, 01:40:43 PM
 #1952

Thank's a lot! That was easy to understand and useful!
Midwinter
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March 25, 2013, 03:28:17 PM
 #1953

Great post, well written!
Seno
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March 25, 2013, 08:07:51 PM
 #1954

thanks for the post! Will certainly do this when I've obtained some BTC.
Just one question: how can the wallet receive BTC when it's not plugged in? If the linux USB isn;t booted, it isn't connected to the internet, so theoretically the BTC's won't be added to my balance, right? Or am I missing something here.
Baloo
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March 26, 2013, 01:12:19 AM
 #1955

Great post, thanks! I'm using blockchain for a few months now and am pretty happy with it. There are occasional bugs, but their Support Group is always here on forum to help.  Wink
kkay
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March 26, 2013, 03:27:25 AM
 #1956

thankfully with your help and the other bitcoiners I finally can grasp what a paper wallet is, i've been in the game for a bit, and it's still been confusing, thanks a lot  Cheesy
Yvonne-Freeman
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March 26, 2013, 10:16:20 AM
 #1957

There was some very helpful information in this thread. Thank you very much!

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shaon004
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March 26, 2013, 10:22:13 AM
 #1958

ijust secured my lr because i did lr to btc exchange and someone hacked my lr with all the funds smh
Jkljkl
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March 26, 2013, 10:25:18 AM
 #1959

Very usefull information. Thank You

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mrgroove
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March 26, 2013, 10:28:18 AM
 #1960

would you trust an online wallet with considerable amount of bitcoins?
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