Bitcoin Forum
December 08, 2016, 02:27:32 AM *
News: Latest stable version of Bitcoin Core: 0.13.1  [Torrent].
 
   Home   Help Search Donate Login Register  
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 [30] 31 32 33 34 35 36 37 38 39 »
  Print  
Author Topic: [ANN] bitaddress.org Safe JavaScript Bitcoin address/private key  (Read 110075 times)
ffe
Sr. Member
****
Offline Offline

Activity: 297



View Profile
March 09, 2014, 04:50:33 PM
 #581

Could you possibly make a wallet using a deck of cards? There are an insane amount of combinations possible, and you could at least just make a brainwallet by putting in the cards in order. Then you can just keep the deck in that order to save it.

Yes. Just shuffle a deck well and deal a few cards then enter them, using a code for each card, as the password in a brain wallet generator. Something like 1H for ace of hearts and KS for king of spades.

You need to pick the entropy you want, which will give you how many cards are needed in the deal. The whole deck gives you 52! combinations or 226 bits of entropy. You probably don't need much more than 100 bits though - so, fewer cards.

Number   Bits of
of cards   Entropy
15               82
16               87
17               93
18               98
19               103
20               108
21               113
22               118
23               123
24               128
25               132

Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1481164052
Hero Member
*
Offline Offline

Posts: 1481164052

View Profile Personal Message (Offline)

Ignore
1481164052
Reply with quote  #2

1481164052
Report to moderator
1481164052
Hero Member
*
Offline Offline

Posts: 1481164052

View Profile Personal Message (Offline)

Ignore
1481164052
Reply with quote  #2

1481164052
Report to moderator
canton
Sr. Member
****
Offline Offline

Activity: 259



View Profile WWW
March 10, 2014, 06:39:14 PM
 #582

Could you possibly make a wallet using a deck of cards?

I researched this a bit in putting together these instructions (see below.)

Quote
mix up a deck of 52 playing cards (after thoroughly shuffling it at least 10 times) and enter at least the top 31 cards in this format: 5S-10H-AC-... (where 5S = 5 of Spades, 10H = 10 of Hearts, AC = Ace of Clubs, etc.)



Here's where I asked for feedback/confirmation of this strategy:

http://www.reddit.com/r/Bitcoin/comments/1x15xq/i_shuffled_a_deck_of_52_cards_how_many_playing/

For bitaddress.org you just feed your string of cards into the wallet details tab for "enter private key" and allow it to SHA256 your input.

https://bitcoinpaperwallet.com - Gorgeous 2-sided tri-fold paper wallets with tamper-evident features. *** Now with BIP38 & dice generator ***

My RSA Key ID & Fingerprint: 36E1D9B6 / AB12 6777 451C 7A18 C172 3297 C525 F065 0B16 DF4B
BG4
Hero Member
*****
Online Online

Activity: 675


PaperSafe.org


View Profile WWW
March 17, 2014, 01:03:52 AM
 #583


I would like to say Thank you for this GOLD Standard for Cold storage Paper wallets. ....I would just like to take this time and add my experiences that I have been working with....In the last few week I have upgraded my cell phone to a Samsung Galaxy Note 3...Little did I know ..It has NFC ( near Field Comminication) with Special Programmable Tags...Also The nexus 7 2013 does this also but not as many tags are compatable...There are other threads on the NFC uses with bitcoin on the forum if you look....This week , Staples has a Hot laminator On sale for $29.00 with 5 mill. pocket note card Laminating stock that the Paper wallet fits in nicely..This makes the Paper wallet almost indestructible.....Now comes the NFC tag...I added a NFC tag into the Wallet near the Load QR on the reverse side....This NFC tag when scanned loads the Blockchain.info site for that bitcoin address for easy checking for Coins Stats.....Because the Wallet is hot laminated The Halogram stickers aren't needed because you would need to cut the wallet with sissors to access the Redeem code... The NFC tag is Laminated with in the paper wallet....Just lay Nexus 7 or Samsung Note 3 on to of the paper wallet instantly shows Wallet amount......I also added a Numbered Holagram sticker just the give a serial number for reference and would like to somehow add that into the blockchain as an extra security step...

I would like to make one request....Denominations on the paper wallet..(0.1)(0.01)(0.001)bitcoins Maybe with differant colors.....Or Happy Birthday Wallets....( I like the Christmas Wallet idea)
Maybe  Have a field on the Front that  Users can add  Notes for that Wallet, So a message to someone or the Denomination amount can be added
 
*<ADD>These wallets that I am making are for LONG term storage....I am trying to fine out how long the Programmable NFC holds it memory

Newar
Legendary
*
Offline Offline

Activity: 1148


https://gliph.me/hUF


View Profile
March 18, 2014, 12:10:36 PM
 #584

[...] easy checking for Coins Stats.....[...]

I just use the Bitcoin Balance app
http://alarmred.com/bitcoinbalance

OTC rating | GPG keyid 1DC91318EE785FDE | Gliph: lightning bicycle tree music | Mycelium, a swift & secure Bitcoin client for Android | LocalBitcoins
minimalB
Donator
Hero Member
*
Offline Offline

Activity: 627


View Profile
March 24, 2014, 11:50:36 AM
 #585

Small display bug (using Safari or Firefox):

1.
At "Paper Wallet" tab, create 2 or more addresses using "Hide Art?" check-box (so no artwork is used). After addresses are generated, if you click again on check-box "Hide Art?" or "BIP38 Encrypt?", private keys start jumping around.

2.
If you do the same as 1., but you also use BIP38 option, after addresses are generated, if you click on "BIP38 Encrypt?" check-box, font size changes.

I tried with Safari and Firefox, can someone test with Chrome?
jodyrb
Newbie
*
Offline Offline

Activity: 8


View Profile
March 27, 2014, 07:26:39 PM
 #586

Could anyone program a bitcoin address generator for an hp 50g calculator?
pointbiz
Sr. Member
****
Offline Offline

Activity: 426

1ninja


View Profile
April 15, 2014, 02:42:15 AM
 #587

Shamir's secret sharing is coming next:
https://github.com/pointbiz/bitaddress.org/commit/7e760cb0c61b3f4218e41a239021f839f5fb8b93
https://github.com/pointbiz/bitaddress.org/pull/57
Thanks to Jeff Weiss for the commits.


Example use case 2 of 3:
Division of 3 shares:
1 share in a safety deposit box ("Box")
1 share at Home
1 share at Work
Threshold of 2 can be redeemed in these permutations
Home + Box
Work + Box
Home + Work

Example use case 7 of 13:
Division of 13 shares:
4 shares in a safety deposit box ("Box")
3 shares with good friend Angie
3 shares with good friend Fred
3 shares with Self at home or office
Threshold of 7 can be redeemed in these permutations
Self + Box (no trust to spend your coins but your friends are backing up your shares)
Angie + Box (Angie will send btc to executor of your will)
Fred + Box (if Angie hasn't already then Fred will send btc to executor of your will)
Angie + Fred + Self (bank fire/theft then you with both your friends can spend the coins)

Coder of: https://www.bitaddress.org      Thread
Open Source JavaScript Client-Side Bitcoin Wallet Generator
Donations: 1NiNja1bUmhSoTXozBRBEtR8LeF9TGbZBN   PGP
Financisto
Sr. Member
****
Offline Offline

Activity: 463

★BFG★


View Profile
April 15, 2014, 09:16:21 AM
 #588

Shamir's secret will be an excelent upgrade to this (already) good tool!

Keep up the good work!

Cheers!

Compilation of Brainwallet & Paper wallet generators Blockchain Financial Group Blokĉeno Financa Grupo
pointbiz
Sr. Member
****
Offline Offline

Activity: 426

1ninja


View Profile
April 16, 2014, 03:12:59 AM
 #589

v2.9.0
https://www.bitaddress.org/bitaddress.org-v2.9.0-SHA1-6e9ae5c64d510b53fa39e36a3017d5342b838984.html
https://www.bitaddress.org/bitaddress.org-v2.9.0-SHA1-6e9ae5c64d510b53fa39e36a3017d5342b838984.html.sig
Split Wallet: Shamir's Secret Sharing for a Bitcoin private key.
Thanks to Jeff Weiss.

Coder of: https://www.bitaddress.org      Thread
Open Source JavaScript Client-Side Bitcoin Wallet Generator
Donations: 1NiNja1bUmhSoTXozBRBEtR8LeF9TGbZBN   PGP
minimalB
Donator
Hero Member
*
Offline Offline

Activity: 627


View Profile
April 16, 2014, 08:55:03 AM
 #590

Thank you pointbiz for all your exceptional work!

Split wallet is excellent addition. Also, new menu design looks great.

Thanks!
danieldean
Newbie
*
Offline Offline

Activity: 11


View Profile
April 20, 2014, 08:35:35 PM
 #591

Hi

Many thanks for your hard work. I used bitaddress.org a few weeks ago to create my first ever paper wallet. I was holding a bit too much BTC unsafely until then.  Undecided

When I created my paper wallet, which I printed a couple of copies of, I messed up when attempting to laminate them and they both ended up getting chewed. Fortunately I could still scan the QR Codes so I didn't lose my BTC. Cheesy

The problem I then had was that I didn't want to start from scratch but I still wanted a nice, and laminated, paper wallet. I tried using GIMP to do a recreation but the text was way too blurry when rotated and it was generally below par. I ended up using HTML and CSS to recreate my paper wallets and I'm glad to say it was successful. In doing this I ended up creating a utility that can do all this for me. It includes your background but nothing else. It doesn't recreate the QR Codes either, you have to use your 'Wallet Details' to do that. I think some others may find it useful if they mess up like me, is it okay to distribute it and if so how do I attribute your background to you?

If it's not okay or if you don't mind doing so could you please include the ability to recreate paper wallets from a given private key in bitaddress.org?
cypherdoc
Legendary
*
Offline Offline

Activity: 1764



View Profile
April 20, 2014, 11:47:10 PM
 #592

why does this:

Code:
cypher@cypher:~/Desktop$ sha1sum bitaddress.org.html
2d139339eaf0d1884436c316525e2f89d7249d45  bitaddress.org.html

not match this:

2014-04-15: status ACTIVE
bitaddress.org-v2.9.0-SHA1-6e9ae5c64d510b53fa39e36a3017d5342b838984.html
 - Split Wallet: Shamir's Secret Sharing for a Bitcoin private key.
   Thanks to Jeff Weiss.
dooglus
Legendary
*
Offline Offline

Activity: 2002



View Profile
April 21, 2014, 05:25:04 AM
 #593

why does this:

Code:
cypher@cypher:~/Desktop$ sha1sum bitaddress.org.html
2d139339eaf0d1884436c316525e2f89d7249d45  bitaddress.org.html

not match this:

bitaddress.org-v2.9.0-SHA1-6e9ae5c64d510b53fa39e36a3017d5342b838984.html

Probably because your web browser mangled the file. Try using curl or wget to download it.

pointbiz
Sr. Member
****
Offline Offline

Activity: 426

1ninja


View Profile
April 21, 2014, 08:58:03 PM
 #594

v2.9.1
https://www.bitaddress.org/bitaddress.org-v2.9.1-SHA1-67b1facd70890aa9544597e97122c7a1d4fdc821.html
 - Hungarian translation. Thanks bitcoin333.
 - Auto detect culture and translate. Thanks onovy.

Coder of: https://www.bitaddress.org      Thread
Open Source JavaScript Client-Side Bitcoin Wallet Generator
Donations: 1NiNja1bUmhSoTXozBRBEtR8LeF9TGbZBN   PGP
cypherdoc
Legendary
*
Offline Offline

Activity: 1764



View Profile
April 21, 2014, 09:34:43 PM
 #595

why does this:

Code:
cypher@cypher:~/Desktop$ sha1sum bitaddress.org.html
2d139339eaf0d1884436c316525e2f89d7249d45  bitaddress.org.html

not match this:

bitaddress.org-v2.9.0-SHA1-6e9ae5c64d510b53fa39e36a3017d5342b838984.html

Probably because your web browser mangled the file. Try using curl or wget to download it.

i don't think so.  it's never acted up before.

in fact, now it matches since pointbiz posted the new version above just today Smiley
pointbiz
Sr. Member
****
Offline Offline

Activity: 426

1ninja


View Profile
April 22, 2014, 01:04:45 AM
 #596

why does this:

Code:
cypher@cypher:~/Desktop$ sha1sum bitaddress.org.html
2d139339eaf0d1884436c316525e2f89d7249d45  bitaddress.org.html

not match this:

bitaddress.org-v2.9.0-SHA1-6e9ae5c64d510b53fa39e36a3017d5342b838984.html

Probably because your web browser mangled the file. Try using curl or wget to download it.

i don't think so.  it's never acted up before.

in fact, now it matches since pointbiz posted the new version above just today Smiley

Not sure what to say but I didn't touch the 2.9.0 file today. I know you didn't make a noob error but others might by not saving the page as HTML only. As always, it's super difficult to ensure the integrity of the path between my authorship of the HTML document and your receipt so confirming the sha1 checksum is the only way to be safe.

Coder of: https://www.bitaddress.org      Thread
Open Source JavaScript Client-Side Bitcoin Wallet Generator
Donations: 1NiNja1bUmhSoTXozBRBEtR8LeF9TGbZBN   PGP
pointbiz
Sr. Member
****
Offline Offline

Activity: 426

1ninja


View Profile
April 22, 2014, 01:07:40 AM
 #597

Hi

Many thanks for your hard work. I used bitaddress.org a few weeks ago to create my first ever paper wallet. I was holding a bit too much BTC unsafely until then.  Undecided

When I created my paper wallet, which I printed a couple of copies of, I messed up when attempting to laminate them and they both ended up getting chewed. Fortunately I could still scan the QR Codes so I didn't lose my BTC. Cheesy

The problem I then had was that I didn't want to start from scratch but I still wanted a nice, and laminated, paper wallet. I tried using GIMP to do a recreation but the text was way too blurry when rotated and it was generally below par. I ended up using HTML and CSS to recreate my paper wallets and I'm glad to say it was successful. In doing this I ended up creating a utility that can do all this for me. It includes your background but nothing else. It doesn't recreate the QR Codes either, you have to use your 'Wallet Details' to do that. I think some others may find it useful if they mess up like me, is it okay to distribute it and if so how do I attribute your background to you?

If it's not okay or if you don't mind doing so could you please include the ability to recreate paper wallets from a given private key in bitaddress.org?

The background image for the art on the paper wallet is public domain it was sourced from a contest run by casascius on this forum. So I believe no attribution is required. Feel free to distribute your tool.

I have received some requests in the past about re-creating a paper wallet with a known key. At this moment I do not have any plans to implement that functionality, I may change my mind in the future.

Coder of: https://www.bitaddress.org      Thread
Open Source JavaScript Client-Side Bitcoin Wallet Generator
Donations: 1NiNja1bUmhSoTXozBRBEtR8LeF9TGbZBN   PGP
pointbiz
Sr. Member
****
Offline Offline

Activity: 426

1ninja


View Profile
April 22, 2014, 01:11:22 AM
 #598

why does this:

Code:
cypher@cypher:~/Desktop$ sha1sum bitaddress.org.html
2d139339eaf0d1884436c316525e2f89d7249d45  bitaddress.org.html

not match this:

2014-04-15: status ACTIVE
bitaddress.org-v2.9.0-SHA1-6e9ae5c64d510b53fa39e36a3017d5342b838984.html
 - Split Wallet: Shamir's Secret Sharing for a Bitcoin private key.
   Thanks to Jeff Weiss.

For the sake of paranoia if you still have the file that returned the bad hash can you do a diff and look for anything suspicious?

If you did save the page as "web page complete" by accident there should be obvious signs. Also, if there was something malicious in the file you received it should jump out by doing a diff.

Coder of: https://www.bitaddress.org      Thread
Open Source JavaScript Client-Side Bitcoin Wallet Generator
Donations: 1NiNja1bUmhSoTXozBRBEtR8LeF9TGbZBN   PGP
cypherdoc
Legendary
*
Offline Offline

Activity: 1764



View Profile
April 22, 2014, 02:44:22 AM
 #599

why does this:

Code:
cypher@cypher:~/Desktop$ sha1sum bitaddress.org.html
2d139339eaf0d1884436c316525e2f89d7249d45  bitaddress.org.html

not match this:

2014-04-15: status ACTIVE
bitaddress.org-v2.9.0-SHA1-6e9ae5c64d510b53fa39e36a3017d5342b838984.html
 - Split Wallet: Shamir's Secret Sharing for a Bitcoin private key.
   Thanks to Jeff Weiss.

For the sake of paranoia if you still have the file that returned the bad hash can you do a diff and look for anything suspicious?

If you did save the page as "web page complete" by accident there should be obvious signs. Also, if there was something malicious in the file you received it should jump out by doing a diff.

I got the raw code from github and did a Save Page As like I always do. Unfortunately I already deleted that file obviously.
pointbiz
Sr. Member
****
Offline Offline

Activity: 426

1ninja


View Profile
April 22, 2014, 04:14:03 AM
 #600

why does this:

Code:
cypher@cypher:~/Desktop$ sha1sum bitaddress.org.html
2d139339eaf0d1884436c316525e2f89d7249d45  bitaddress.org.html

not match this:

2014-04-15: status ACTIVE
bitaddress.org-v2.9.0-SHA1-6e9ae5c64d510b53fa39e36a3017d5342b838984.html
 - Split Wallet: Shamir's Secret Sharing for a Bitcoin private key.
   Thanks to Jeff Weiss.

For the sake of paranoia if you still have the file that returned the bad hash can you do a diff and look for anything suspicious?

If you did save the page as "web page complete" by accident there should be obvious signs. Also, if there was something malicious in the file you received it should jump out by doing a diff.

I got the raw code from github and did a Save Page As like I always do. Unfortunately I already deleted that file obviously.

After the 2.9.0 release I merged in some other commits. You need to save the commit which has v2.9.0 in the commit message/comments. Sometimes github is ahead of the website because I'm working on commits for the next release. So, be sure to double check the commit message for the version number.

Coder of: https://www.bitaddress.org      Thread
Open Source JavaScript Client-Side Bitcoin Wallet Generator
Donations: 1NiNja1bUmhSoTXozBRBEtR8LeF9TGbZBN   PGP
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 [30] 31 32 33 34 35 36 37 38 39 »
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!