[ANN] Electrum Seed Guardian | Bitcointalksearch.org

Bitblue

newbie

Activity: 10

Merit: 0

Quote from: madmat on August 07, 2014, 03:24:18 AM

Quote from: Bitblue on August 06, 2014, 10:30:25 PM

You don't need to use bip39 to convert the hex shares into mnemonics. Electrums own mnemonic.py file (in lib/) can do just that:

Quote

python mnemonic.py 1234...

The functions are mn_encode() and mn_decode().

seedguardian uses mnemonic.js which is a reimplementation of mnemonic.py.

https://github.com/seedguardian/seedguardian.github.io/blob/master/lib/js/mnemonic.js

Good to know

.

madmat

legendary

Activity: 966

Merit: 1000

Quote from: Bitblue on August 06, 2014, 10:30:25 PM

You don't need to use bip39 to convert the hex shares into mnemonics. Electrums own mnemonic.py file (in lib/) can do just that:

Quote

python mnemonic.py 1234...

The functions are mn_encode() and mn_decode().

seedguardian uses mnemonic.js which is a reimplementation of mnemonic.py.

https://github.com/seedguardian/seedguardian.github.io/blob/master/lib/js/mnemonic.js

Bitblue

newbie

Activity: 10

Merit: 0

You don't need to use bip39 to convert the hex shares into mnemonics. Electrums own mnemonic.py file (in lib/) can do just that:

Quote

python mnemonic.py 1234...

The functions are mn_encode() and mn_decode().

madmat

legendary

Activity: 966

Merit: 1000

Everyone here could help this little project by doing following things:

1. Test it and use it http://seedguardian.github.io/
2. Report bugs https://github.com/seedguardian/seedguardian.github.io/issues
3. Develop it, by forking it and do some pull requests https://github.com/seedguardian/seedguardian.github.io
4. Give bitcoins: 15zvrQeY3jPmqQGUPYZBRVfmfBy5Deo7FA

DannyElfman

sr. member

Activity: 406

Merit: 250

Quote from: madmat on August 06, 2014, 10:07:46 AM

Quote from: DannyElfman on August 06, 2014, 07:37:03 AM

Quote from: madmat on August 06, 2014, 07:32:05 AM

Quote from: bitcoiner23 on August 06, 2014, 07:10:41 AM

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

Passguardian is great. I use it for bip38 passphrase.

I am going to read bip39, as i don't know it.

If you fork the code, don't hesitate to do some pull requests, any help is welcome.

So basically you are protecting your private keys with BIP 38 passwords + use passguardian to split the keys. Isn't this kind of an overkill?

I don't do that. i split the bip38 password with passguardian, not the key.

Ahh, that makes perfectly good sence. Might want to implement this myself! Thank your for the idea.

madmat

legendary

Activity: 966

Merit: 1000

Quote from: DannyElfman on August 06, 2014, 07:37:03 AM

Quote from: madmat on August 06, 2014, 07:32:05 AM

Quote from: bitcoiner23 on August 06, 2014, 07:10:41 AM

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

Passguardian is great. I use it for bip38 passphrase.

I am going to read bip39, as i don't know it.

If you fork the code, don't hesitate to do some pull requests, any help is welcome.

So basically you are protecting your private keys with BIP 38 passwords + use passguardian to split the keys. Isn't this kind of an overkill?

I don't do that. i split the bip38 password with passguardian, not the key.

Bitcoin Town

newbie

Activity: 13

Merit: 0

Quote from: ganabb on June 06, 2014, 05:16:22 AM

Do I need to save my seed on paper and use that wallet forever without worrying about doing any other backups?

yea thats more good than save internet if thats about milliion bucks in bitcoin .
prepare more good than speculation.

DannyElfman

sr. member

Activity: 406

Merit: 250

Quote from: madmat on August 06, 2014, 07:32:05 AM

Quote from: bitcoiner23 on August 06, 2014, 07:10:41 AM

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

Passguardian is great. I use it for bip38 passphrase.

I am going to read bip39, as i don't know it.

If you fork the code, don't hesitate to do some pull requests, any help is welcome.

So basically you are protecting your private keys with BIP 38 passwords + use passguardian to split the keys. Isn't this kind of an overkill?

madmat

legendary

Activity: 966

Merit: 1000

Quote from: bitcoiner23 on August 06, 2014, 07:10:41 AM

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

Passguardian is great. I use it for bip38 passphrase.

I am going to read bip39, as i don't know it.

If you fork the code, don't hesitate to do some pull requests, any help is welcome.

bitcoiner23

member

Activity: 64

Merit: 10

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

Este Nuno

legendary

Activity: 826

Merit: 1002

amarha

Quote from: madmat on August 05, 2014, 07:20:42 AM

Quote from: Este Nuno on August 05, 2014, 07:06:27 AM

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.

madmat

legendary

Activity: 966

Merit: 1000

Quote from: Este Nuno on August 05, 2014, 07:06:27 AM

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

Activity: 826

Merit: 1002

amarha

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

legendary

Activity: 966

Merit: 1000

Quote from: philipmicklon on August 05, 2014, 04:08:00 AM

Quote from: madmat on August 04, 2014, 02:16:00 AM

Bug fixed. You could see the diff here : https://github.com/seedguardian/seedguardian.github.io/commit/54e3dcb97d810c0b2e2601916ba05e322baaad76

Thanks!!

You are welcome.

If you find other bugs, you could report them here : https://github.com/seedguardian/seedguardian.github.io/issues

philipmicklon

full member

Activity: 176

Merit: 100

Quote from: madmat on August 04, 2014, 02:16:00 AM

Bug fixed. You could see the diff here : https://github.com/seedguardian/seedguardian.github.io/commit/54e3dcb97d810c0b2e2601916ba05e322baaad76

Thanks!!

madmat

legendary

Activity: 966

Merit: 1000

Quote from: philipmicklon on August 03, 2014, 07:41:32 PM

Quote from: madmat on August 03, 2014, 04:22:07 PM

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!

Bug fixed. You could see the diff here : https://github.com/seedguardian/seedguardian.github.io/commit/54e3dcb97d810c0b2e2601916ba05e322baaad76

philipmicklon

full member

Activity: 176

Merit: 100

Quote from: madmat on August 03, 2014, 04:22:07 PM

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!

madmat

legendary

Activity: 966

Merit: 1000

Quote from: madmat on August 03, 2014, 07:51:11 AM

Quote from: philipmicklon on August 03, 2014, 06:29:46 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?

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.

Code:

// 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.

madmat

legendary

Activity: 966

Merit: 1000

Quote from: philipmicklon on August 03, 2014, 06:29:46 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?

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.

Code:

// Generate a new seed if empty
        if ($scope.seed === '') {
            $scope.seed = secrets.random(128);
            $scope.humanSeed = mn_encode($scope.seed); 
        }

philipmicklon

full member

Activity: 176

Merit: 100

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?

philipmicklon

full member

Activity: 176

Merit: 100

This is a wonderful tool

Thank you so much for sharing it with the community!

Will donate $5 in just a minute.

madmat

legendary

Activity: 966

Merit: 1000

I would like to thank the anonymous donator.

https://blockchain.info/fr/tx/7ffbd2c7fd6951f227f8f10b5b4f40497bb84b5454ca2748a53200d76823bf7d

madmat

legendary

Activity: 966

Merit: 1000

Quote from: madmat on June 13, 2014, 08:12:27 AM

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

legendary

Activity: 966

Merit: 1000

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

legendary

Activity: 966

Merit: 1000

Quote from: RagnarDanneskjold on June 06, 2014, 08:33:56 PM

this is very cool. I will use it.

Nice. Don't forget to keep a copy of the software (you could get it from github here : https://github.com/seedguardian/seedguardian.github.io) and to use it offline.

RagnarDanneskjold

full member

Activity: 144

Merit: 100

this is very cool. I will use it.

madmat

legendary

Activity: 966

Merit: 1000

Quote from: ganabb on June 06, 2014, 05:16:22 AM

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.

ganabb

sr. member

Activity: 434

Merit: 250

Do I need to save my seed on paper and use that wallet forever without worrying about doing any other backups?

madmat

legendary

Activity: 966

Merit: 1000

Electrum Seed Guardian - Never lose your bitcoins

Website: http://seedguardian.github.io/
Github repository: https://github.com/seedguardian/seedguardian.github.io

Electrum 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.

Topic: [ANN] Electrum Seed Guardian (Read 4297 times)