madmat (OP)
Legendary
Offline
Activity: 966
Merit: 1000
|
|
June 02, 2014, 10:39:35 AM |
|
Electrum Seed Guardian - Never lose your bitcoins Website: http://seedguardian.github.io/Github repository: https://github.com/seedguardian/seedguardian.github.ioElectrum Seed Guardian aims at keeping your electrum seed safe and secure. It splits your electrum seed in shares of 15 words, using Shamir's Secret Sharing Scheme. Split of a secret is powerful, as it avoids the lose of your secret. If shares are correctly hidden and geographically distributed, risks like fire, theft, loss are a lot reduced. Shares made of words rather than hexadecimal allows you to write them down manually without errors. You coould make a shared paper wallet without any printer, this is good if you can't (or don't want) to trust your printer. This software is just new, so use it at your own risk. You are welcome to report issues here or on github.
|
|
|
|
ganabb
|
|
June 06, 2014, 10:16:22 AM |
|
Do I need to save my seed on paper and use that wallet forever without worrying about doing any other backups?
|
|
|
|
madmat (OP)
Legendary
Offline
Activity: 966
Merit: 1000
|
|
June 06, 2014, 12:33:59 PM |
|
Do I need to save my seed on paper and use that wallet forever without worrying about doing any other backups?
Electrum seed is sufficient to recreate your wallet. So you could use electrum to generate a seed, write it down somewhere and you have your cold wallet. But there are risks with this method. You could lose the paper with the seed, or it could burn, or someone could use it if the paper is found. That's why i created seed guardian. You split electrum seed, let's say in 3 shares with a threshold of 2. You write down the 15 words of each share on a different paper, and hide each paper in a different place. For example, one on an encrypted usb drive, one with your papers at home, one at work. If one of these papers is lost or burnt or stolen, you still could recreate the seed with the two others. If someone find one of the three papers, he can't do anything with it.
|
|
|
|
RagnarDanneskjold
|
|
June 07, 2014, 01:33:56 AM |
|
this is very cool. I will use it.
|
git | | ID'Bitcoin is the progress toward a society of privacy. The savage’s whole existence is public, ruled by the laws of his tribe. Bitcoin is the process of setting man free from men'
|
|
|
|
madmat (OP)
Legendary
Offline
Activity: 966
Merit: 1000
|
|
June 13, 2014, 01:12:27 PM |
|
RagnarDanneskjold found a bug : When threshold is not equals to 2, the seed is not reconstructed correctly.
Avoid using this software for anything but test.
|
|
|
|
madmat (OP)
Legendary
Offline
Activity: 966
Merit: 1000
|
|
June 13, 2014, 02:13:50 PM |
|
RagnarDanneskjold found a bug : When threshold is not equals to 2, the seed is not reconstructed correctly.
Avoid using this software for anything but test.
Bug is fixed.
|
|
|
|
madmat (OP)
Legendary
Offline
Activity: 966
Merit: 1000
|
|
June 24, 2014, 07:14:10 AM |
|
|
|
|
|
philipmicklon
|
|
August 03, 2014, 10:41:32 AM |
|
This is a wonderful tool Thank you so much for sharing it with the community! Will donate $5 in just a minute.
|
|
|
|
philipmicklon
|
|
August 03, 2014, 11:29:46 AM |
|
Madmat, Trying to use it right now. It won't let me supply an existing seed.
What PRAND source are you using to generate these seeds, and how many bits of entropy does it use?
Why can't I supply my own seed that electrum generates?
|
|
|
|
madmat (OP)
Legendary
Offline
Activity: 966
Merit: 1000
|
|
August 03, 2014, 12:51:11 PM |
|
Madmat, Trying to use it right now. It won't let me supply an existing seed.
What PRAND source are you using to generate these seeds, and how many bits of entropy does it use?
Why can't I supply my own seed that electrum generates?
At first, thank you for the donation. If there is a bug, I will fix it tomorrow, I only have a phone with me today. Please do an exact description of the steps leading to the problem, so I could easily reproduce it. Seedgiardian uses the random source provided by secrets.js, and it is 128bits, as spectrum does. // Generate a new seed if empty if ($scope.seed === '') { $scope.seed = secrets.random(128); $scope.humanSeed = mn_encode($scope.seed); }
|
|
|
|
madmat (OP)
Legendary
Offline
Activity: 966
Merit: 1000
|
|
August 03, 2014, 09:22:07 PM |
|
Madmat, Trying to use it right now. It won't let me supply an existing seed.
What PRAND source are you using to generate these seeds, and how many bits of entropy does it use?
Why can't I supply my own seed that electrum generates?
At first, thank you for the donation. If there is a bug, I will fix it tomorrow, I only have a phone with me today. Please do an exact description of the steps leading to the problem, so I could easily reproduce it. Seedgiardian uses the random source provided by secrets.js, and it is 128bits, as spectrum does. // Generate a new seed if empty if ($scope.seed === '') { $scope.seed = secrets.random(128); $scope.humanSeed = mn_encode($scope.seed); } I reproduced the bug on my phone. I don't need more information to fix it. I am going to debug tomorrow.
|
|
|
|
philipmicklon
|
|
August 04, 2014, 12:41:32 AM |
|
I reproduced the bug on my phone. I don't need more information to fix it. I am going to debug tomorrow.
Awesome. Thank you!
|
|
|
|
|
|
|
Este Nuno
Legendary
Offline
Activity: 826
Merit: 1002
amarha
|
|
August 05, 2014, 12:06:27 PM |
|
This is really cool.
How does everyone distribute the new seed parts? Do you write them down and hide them in difference places? Or encrypt them and put them on different cloud storage servers or something?
|
|
|
|
madmat (OP)
Legendary
Offline
Activity: 966
Merit: 1000
|
|
August 05, 2014, 12:20:42 PM |
|
This is really cool.
How does everyone distribute the new seed parts? Do you write them down and hide them in difference places? Or encrypt them and put them on different cloud storage servers or something?
You have different options. First, to avoid fire risks or thief risk, you must hide them in different places. you could hide one in your house, one in your parent's house and one at work, with a threshold of two. If you want, you could write it down on a paper and hide the paper, but you could also hide them in a book, just by adding a dot near the 15 words in the text of the book, in the order you find them. You could make a qrcode with the 15 words, print it on a sticker and stick it to the back of a book or something else, noone will notice it, even if it not hidden. You could write an email with the 15 words hidden in white on white and send this email to yourself. Make sure you use double authentication for your mail. Your imagination is your friend. I have plans to add functionalities : 1. get the first address of the electrum wallet without the need of electrum 2. paperwallet, with one share and its qrcode, and first address and its qrcode I need time to do that, and i won't have any during august. Maybe september.
|
|
|
|
Este Nuno
Legendary
Offline
Activity: 826
Merit: 1002
amarha
|
|
August 05, 2014, 02:00:33 PM |
|
This is really cool.
How does everyone distribute the new seed parts? Do you write them down and hide them in difference places? Or encrypt them and put them on different cloud storage servers or something?
You have different options. First, to avoid fire risks or thief risk, you must hide them in different places. you could hide one in your house, one in your parent's house and one at work, with a threshold of two. If you want, you could write it down on a paper and hide the paper, but you could also hide them in a book, just by adding a dot near the 15 words in the text of the book, in the order you find them. You could make a qrcode with the 15 words, print it on a sticker and stick it to the back of a book or something else, noone will notice it, even if it not hidden. You could write an email with the 15 words hidden in white on white and send this email to yourself. Make sure you use double authentication for your mail. Your imagination is your friend. I have plans to add functionalities : 1. get the first address of the electrum wallet without the need of electrum 2. paperwallet, with one share and its qrcode, and first address and its qrcode I need time to do that, and i won't have any during august. Maybe september. Awesome, thanks! Those are some really good ideas too.
|
|
|
|
bitcoiner23
Member
Offline
Activity: 64
Merit: 10
|
|
August 06, 2014, 12:10:41 PM |
|
I also found: http://passguardian.com/Some ideas: Support of BIP39 and/or the possibility to use 128-256 bit mnemonics. Displaying the shares as mnemonic / qrcode / hex Maybe i'll fork and will try it by myself. AngularJS is just great to play with
|
|
|
|
|