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bits4coins (OP)
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March 03, 2013, 08:48:46 PM
 #1
Wouldn't it be by many factors more secure to apply Shamir's Secret Sharing Scheme on important private keys for decentralized offline storage?
web based here: http://passguardian.com/
github open-source project: https://github.com/amper5and/secrets.js/

It seems to me this would be the next step in offline / paper wallets.

Anyone know if any bitcoin wallet has built in support for something like this?
Meni Rosenfeld
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March 03, 2013, 08:49:44 PM
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Armory.
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bits4coins (OP)
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March 03, 2013, 08:51:44 PM
 #3
Quote from: Meni Rosenfeld on March 03, 2013, 08:49:44 PM
Armory.

I haven't noticed that part of Armory. Could you drop me a link, thx!
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March 03, 2013, 09:28:38 PM
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Quote from: bits4coins on March 03, 2013, 08:51:44 PM
Quote from: Meni Rosenfeld on March 03, 2013, 08:49:44 PM
Armory.

I haven't noticed that part of Armory. Could you drop me a link, thx!
I know that Alan has discussed this at https://bitcointalk.org/index.php?topic=139625.0, not sure which version starts supporting this.
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bluemeanie1
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June 13, 2013, 06:09:19 PM
 #5
Just ran across this thread... I believe this does add some key features to paper wallets.  I started my thinking with Visual Cryptography, which is based on Shamir Secrets.

https://bitcointalk.org/index.php?topic=226671.msg2386001#msg2386001

You could make a fairly robust paper bitcoin scrip scheme using this kind of crypto.

-bm
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Abdussamad
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June 14, 2013, 04:11:00 AM
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Armory can do M of N backups and it uses SSSS:

https://bitcointalk.org/index.php?topic=149820.0
WinVery.com
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June 14, 2013, 06:38:41 AM
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Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety.

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neizvestnyi
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October 25, 2013, 01:07:40 PM
 #8
There's also Shamir's secret sharing iPhone app (https://itunes.apple.com/us/app/passbin/id718617728?ls=1&mt=8) that might be useful to the Bitcoin community, specifically to manage bitcoin and other cryptocurrencies account continuity.
rxl
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February 06, 2014, 04:18:09 PM
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Here's a python implementation of Shamir's Secret Sharing Scheme: https://github.com/halfmoonlabs/secretsharing. Compared to all the other implementations I've seen, this library is actually quite easy to read and understand, which is huge IMO.
nicolasgramlich
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March 01, 2014, 03:32:45 AM
 #10
Quote from: rxl on February 06, 2014, 04:18:09 PM
Here's a python implementation of Shamir's Secret Sharing Scheme: https://github.com/halfmoonlabs/secretsharing. Compared to all the other implementations I've seen, this library is actually quite easy to read and understand, which is huge IMO.

Well, maybe that is because you wrote it yourself "rxl"? Tongue

... actually is very easy to read. Even without knowing Python.
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March 01, 2014, 04:18:51 AM
 #11
https://encryptedbitcoinwallet.com/
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