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Author Topic: Secure bitcoin private key storage for your pocket  (Read 2020 times)
matonis (OP)
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December 13, 2011, 05:27:36 AM
 #1

http://www.kickstarter.com/projects/crypteks/crypteks-usbtm-encrypted-and-lockable-usb-solution
http://www.crypteks.com

-multiple private keys (no limit)
-good for off-network bitcoin transactions too

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I also cover the bitcoin economy for Forbes, American Banker, PaymentsSource, and CoinDesk.
Each block is stacked on top of the previous one. Adding another block to the top makes all lower blocks more difficult to remove: there is more "weight" above each block. A transaction in a block 6 blocks deep (6 confirmations) will be very difficult to remove.
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CIYAM
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December 13, 2011, 05:40:42 AM
 #2

The idea sounds great, however, I read this on their Kickstarter page:

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Besides offering all of our Kickstarter backers access to the Crypteks™ password management system; we will be offering a "ring-change" service for anyone that may have accidentally forgotten their mechanical pass-code.

which seems to me like they have left a "back-door".  Huh


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matonis (OP)
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December 13, 2011, 05:58:29 AM
 #3

The idea sounds great, however, I read this on their Kickstarter page:

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Besides offering all of our Kickstarter backers access to the Crypteks™ password management system; we will be offering a "ring-change" service for anyone that may have accidentally forgotten their mechanical pass-code.


Ian, my understanding is that the "ring-change" service is for the outer shell, not the encryption password for the USB data. Futhermore, the use of the password management system is optional.

From the Crypteks page:
"No way! Thankfully NO ONE can reset your encryption password! Deciphering 256-bit AES encryption is a monumental task! (That's why we love it!). We recommend using and updating your personal Crypteks™ password management system account anytime you get a chance to change your password! We will be encrypting the entire engine and even we will not be able to view your stored information!"    

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I also cover the bitcoin economy for Forbes, American Banker, PaymentsSource, and CoinDesk.
Revalin
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December 13, 2011, 06:16:04 AM
 #4

The lock is silly.  It doesn't do anything to prevent the device from being stolen.  Once it's stolen, it's not hard to open the thing.  I'd bet I could expose the USB connector in two minutes or less given any of a bandsaw, mill, dremel, angle grinder...  Give me five minutes if all I have is a hacksaw.  It's aluminum.

As for the crypto...  I worry about anything that has a "Forgot password" field.  Actually, I worry whenever someone tries to tell me they've made crypto better in any way; it's always snake oil.  Why would I ever put my trust in this thing instead of TrueCrypt or GPG?

Sorry to be a downer, but I'm tired of seeing bad security dressed up in hype.

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ovidiusoft
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December 13, 2011, 08:43:51 AM
 #5

Well, the outer lock is no security, and I trust the open source encryption software more than their hardware AES who could save all keys in plaintext, for all I know. But the thing looks so cool, I want one! Black, keychain latch, pronto! Smiley
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December 13, 2011, 08:45:05 AM
 #6

Looks cool. Lock has at least one use case I can think of but do not want to state here.

Wonder if you could swallow the thing in a hurry? .... nice and round for the exit at least.

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December 14, 2011, 03:41:33 AM
 #7

It does look cool, but not $160 of cool.  But that's just me.

1.1" x 3.1" ... I've swallowed bigger, but I'm sure you could find something smaller to bury your stash.  Smiley

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December 14, 2011, 01:10:45 PM
 #8

Why is it safer than using truecrypt on a regular USB key?  Da Vinci would never have used a cryptex if he could have used truecrypt.
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