I lost the password of my Electrum wallet. In fact, i didn't tough the wallet to have a password when i sent the money to it. What a dumb move, creating a password for the wallet 1.5 months ago, deleting the software, redownload it and suppose that since that he didn't asked, there wasn't any password. (the encrypted file was saved in my home directory).
I think to have a chance to brute force the password, but i need some more test speed, Electrum is in Python and it's really slow. I need to try at least one billion passwords.
So, if someone helps me by providing a GPU implementation of the following algorithm and i successfully recover my founds, i will be more than happy to reward him with 50BTC.
def decode_seed(self, password):
seed = self.pw_decode(self.seed, password)
# check decoded seed with master public key
curve = SECP256k1
secexp = self.stretch_key(seed)
master_private_key = ecdsa.SigningKey.from_secret_exponent( secexp, curve = SECP256k1 )
master_public_key = master_private_key.get_verifying_key().to_string().encode('hex')
if master_public_key != self.master_public_key:
print_error('invalid password (mpk)')
raise BaseException('Invalid password')
return seed
def stretch_key(self,seed):
oldseed = seed
for i in range(100000):
seed = hashlib.sha256(seed + oldseed).digest()
exit()
return string_to_number( seed )
I haven't found a john the ripper implementation for ECDSA, or it doesn't exist.
Here is a screenshoot of my wallet so that you can check whatever or not i successfully retrieve the founds.
(edit: removed).
If someone is willed to try, thank you.