Topic: I'm BIP38 curious, please help me out! - page 4. (Read 8510 times)

First one already done and I can't even compile any cracker, lol...

Can you give some hint like first and last letter from those four ? It would be appreciated and will make my work more easy. There are thousand of combination from these 4 letters which is impossible to crack.

i am still trying to crack that key but after a hour still nothing seems much to crack only luck needed to do that.

Trying to compile, I'll see what I can come up with... Errors out with this: configure.ac:89: warning: macro 'AM_PATH_GLIB_2_0' not found in library

I also tried it, but couldn't compile it in the end...

Can this: https://github.com/cscott/bip38-cracker be reupurposed for this challenge?

But it was with all unicode characters... Here there are 4 characters, only a-Z, so it should work out much faster... as far as I know..

From what I understand about BIP38, it uses salsa/scrypt for its encryption algorithm among other things. It takes insanely more powerful hardware to brute force then many other password algo's because it takes such a long time w/ each iteration.
Someone ran a test on it in reddit once ... ah ... here, are the results:
http://www.reddit.com/r/Bitcoin/comments/2yx99h/my_4_character_bip38_cracking_challenge_has_been/
4 char, w/ hints took a year to crack!

I'll bite, bored at work a little bit. I am as we speak generating word lists for the 4 Character key, lets see how long it takes to even generate all the keys (16 Core Machine). I haven't setup an automated way to Decrypt the key with my word-list yet, so I might just donate the list with the key when it finishes being generated.

Started Generating the word list at 10:45 am

Edit: Added timestamp

I stopped here:

https://github.com/lian/bitcoin-ruby/blob/master/lib/bitcoin/key.rb#L207

Throws me an invalid version exception... Was my first try to crack something, didnt work out ^^

Good luck everyone:

I'll just leave this here:  http://www.babynames1000.com/four-letter/

Hey,

I'd like to figure out how fast BIP38 paper wallets could get cracked in case someone gets to them physically and tries to guess the password.

I created three BIP38 encrypted paper wallets with easy to crack passwords. Only small and capital English letters are used (from "a" to "Z", no numbers, no special characters). Say thanks when you get the money : )

I'll update this post with results when all three wallets are redeemed.

Happy cracking!


****************************   FIRST   **************************

Bitcoin Address:
1Pnc9qRUEhPJd4XrKhFRxkSSs2h6XA7ZUR

Encrypted Private Key:
6PfLsoUAbQ4uKuCtAkzer1KH1Rcaw5WMEmShwA6Q9GtwhbiHfaHP6mqqfT

Password: 4-character American name

Prize: 0.01 BTC

****************************   SECOND   **************************

Bitcoin Address:
19kuXV8cBfQMrLXzPNFsvPHxvTZgrfN1pd

Encrypted Private Key:
6PfPLSVx133khpGT7qrEeBWrxxuaQXNpkrBxCfUB92vg93iSj1Mj1Ce49M

Password: 5-letter word

Prize: 0.05 BTC

****************************   THIRD   **************************

Bitcoin Address:
1J5cjne6YVkgRTMTjqnaJVk1CWEEr3CcdX

Encrypted Private Key:
6PfRB98F9vZLhSpqY5URas5vYUU3qYQrpkJFTLuCg1FvDni6LwT3qAirkp

Password: 6 random characters

Prize: 1.0 BTC

*****************************************************************




EDIT:
Third wallet now has 0.5 BTC prize.

And I added one extra wallet:

****************************   FOURTH   **************************

Bitcoin Address:
15p4qtmfRyTHfPYFRmhGYVGhP9FEZYrFsu

Encrypted Private Key:
6PfTCyR1k5FDHwFXm9Uch5aTGXLQQDtzbQt3sKxmN8i2HppJecyoHbzb9i

Password: 5 random characters (small English letters only (a-z))

Prize: 0.2 BTC

*****************************************************************


EDIT 2:
3rd wallet now has 1.0BTC total.
I'll keep the experiment going for another year.


EDIT3:
After 2 years I have decided to stop the experiment.
The password for third wallet was "zLwMiR".


RESULTS:
First wallet was cracked in under 3 hours. [pwd: BarT]
Second wallet was cracked in under 10 hours. [pwd: grAce]
Fourth wallet was cracked in under 2 days. [pwd: pxrmg]
Third wallet was NOT CRACKED in two years. [pwd: zLwMiR]