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Author Topic: Safe Cold Storage?  (Read 2367 times)
deepceleron
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April 15, 2012, 02:12:08 PM
 #21

I laser engrave my wallets on metal plates, cut them up into jigsaw puzzle pieces, and hide the pieces around my house.

Try to cut tungsten...


And how to generate "5J" + 50 base58 characters for a private key?:



Obviously 59 and 60 mean "roll again"...

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Tuxavant
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April 15, 2012, 02:28:53 PM
 #22

That die is aweseome. Only thing I'd change is 59-60 get replaced with a penis.

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deepceleron
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April 15, 2012, 02:33:23 PM
 #23

That die is aweseome. Only thing I'd change is 59-60 get replaced with a penis.

or 0x04, plus roll 64 times for a hexadecimal key:

Stephen Gornick
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April 16, 2012, 03:12:49 AM
 #24

Like a vault? 

"incubating"
 - http://bitcoinvault.com

RandomQ
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April 16, 2012, 07:46:53 AM
 #25

Encrypted Vmware Computer with truecrypt encrypted drive Hosted on a Computer with fault tolerant hard drive and encrypted online backup. Lowest Level of encryption is 1024 Bit. Any bad ideas to this setup?

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payb.tc
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April 16, 2012, 08:23:12 AM
 #26

Encrypted Vmware Computer with truecrypt encrypted drive Hosted on a Computer with fault tolerant hard drive and encrypted online backup. Lowest Level of encryption is 1024 Bit. Any bad ideas to this setup?

how is a hard drive made to be fault tolerant? that makes me think it is storing bits redundantly, which could be a security leak.
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April 16, 2012, 08:26:39 AM
 #27

Two hard drives that are setup to be fault tolerant under windows 7 ultimate, its windows version of software based RAID. Also remove the Network adapter from the Vmware Computer so its isolated from the internet.

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Sukrim
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April 16, 2012, 05:20:00 PM
 #28

And all these gigabytes of data just to protect a bunch of private keys? Roll Eyes

Also, which symmetric encryption with 1024bit key size are you using? All in all far too complex and full of potential errors to be useful at all.

If you need to encrypt these tiny amounts of data, just do a one-time pad! It's secure against brute forcing as a bonus.

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April 17, 2012, 05:38:10 AM
 #29

I think drivecrypt uses a combo of blowfish,AES,TWOFISH. I would only use this level of encryption/protection for over $200 in BTC, when you really want it to be VERY SECURE lol

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April 17, 2012, 09:18:31 AM
 #30

I'd argue it makes it less secure, also you seem to not even know the basics of your encryption scheme + software... "lol" indeed.

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JohnBigheart
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April 17, 2012, 01:24:26 PM
 #31

1] Send your BTCs to 1KMJnCZjkCU1rJ9DqDr5Nku88EjofJGstu
2] Wait for a few years
3] ?

 Grin

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yochdog
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April 17, 2012, 01:38:23 PM
 #32

Is there is safe and well known service that offers a very safe and storage for btc? Like a vault? 

Thanks.

- Buy a used laptop.
- Reformat the drive and install ubuntu.
- Install the bitcoin client and download the block chain.
- Create an address in the client and write it down.
- Send BTC to the address to test everything.
- Close the bitcoin client and shut down the computer.
- Take the computer to the bank and put it in a safety deposit box.

This is what I would consider very safe storage for btc in a vault.

This.

Maybe backup the hard-drive before you seal it in the vault as well.....
 

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Drifter
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April 17, 2012, 02:02:09 PM
 #33

If you're going to use a safety deposit box, why not just use secure paper? Then you don't even have to worry about hardware malfunction. I doubt I could even fit a laptop into the small size safety deposit boxes in my bank.

If you use a laptop, no need to download the block chain. Install bitcoin, find your receiving address and send away from your other wallet immediately. Check blockexplorer or blockchain.info for transaction verification. As long as you see it sent to your offline address on one of those sites, you're good to go. Obviously you won't see the amount on the offline computer because the block chain isn't downloaded but no need to see the transaction on the offline pc, as long as you have the wallet saved.

BlackBison
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April 17, 2012, 04:22:19 PM
 #34

I understand most of this but one thing I dont get is how do you sign a transaction again using the paper private key? where do you 'enter' it? can you use the paper key that armory generates at a later time in the future without using armory again? if so how?

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April 17, 2012, 05:18:20 PM
 #35

I understand most of this but one thing I dont get is how do you sign a transaction again using the paper private key? where do you 'enter' it? can you use the paper key that armory generates at a later time in the future without using armory again? if so how?

This article has an example for importing an off-line key, and creating an off-line transaction:

http://bitcoinmagazine.net/brain-wallets-the-what-and-the-how/

off-line transactions can be "injected" into the network/blockchain at bitsend.rowit.co.uk

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Stephen Gornick
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April 17, 2012, 11:56:30 PM
 #36

off-line transactions can be "injected" into the network/blockchain at bitsend.rowit.co.uk

And also to:
 http://www.blockchain.info/pushtx

Stephen Gornick
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April 18, 2012, 12:07:22 AM
 #37

using the paper private key?

Using My Wallet from BlockChain.info, you can import the key and after that use My Wallet's Send Money function to transact.



  - http://www.BlockChain.info/wallet

BlackBison
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April 18, 2012, 12:36:55 PM
 #38

Thanks guys.

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