Quote from: casascius on December 31, 2012, 04:46:28 PM

I have recently improved this by introducing BIP 38 and a working proof-of-concept implementation of it.

Quote from: casascius on December 31, 2017, 11:41:15 PM

True. I forgot that random letters have a magnetic quality that pulls the two halves of the letter b (but not d) apart, making it confusing like this. And the research probably shows that 1 and l dont have this problern, loecause they are all one piece. Good call

help me please
need get address of the private key

Code:

import random
import hashlib

BASE58 = '23456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'

def Candidate():
"""
Generate a random, well-formed mini private key.
"""
return('%s%s' % ('S', ''.join(
[BASE58[ random.randrange(0,len(BASE58)) ] for i in range(29)])))

def GenerateKeys(numKeys = 10):
"""
Generate mini private keys and output the mini key as well as the full
private key. numKeys is The number of keys to generate, and
"""
keysGenerated = 0
totalCandidates = 0
while keysGenerated < numKeys:
try:
cand = Candidate()
# Do typo check
t = '%s?' % cand
# Take one round of SHA256
candHash = hashlib.sha256(t).digest()
# Check if the first eight bits of the hash are 0
if candHash[0] == '\x00':
privateKey = GetPrivateKey(cand)
print('\n%s\nSHA256( ): %s\nsha256(?): %s' %
(cand, privateKey, candHash.encode('hex_codec')))
if CheckShortKey(cand):
print('Validated.')
else:
print('Invalid!')
keysGenerated += 1
totalCandidates += 1
except KeyboardInterrupt:
break
print('\n%s: %i\n%s: %i\n%s: %.1f' %
('Keys Generated', keysGenerated,
'Total Candidates', totalCandidates,
'Reject Percentage',
100*(1.0-keysGenerated/float(totalCandidates))))

def GetPrivateKey(shortKey):
"""
Returns the hexadecimal representation of the private key corresponding
to the given short key.
"""
if CheckShortKey(shortKey):
return hashlib.sha256(shortKey).hexdigest()
else:
print('Typo detected in private key!')
return None

def CheckShortKey(shortKey):
"""
Checks for typos in the short key.
"""
if len(shortKey) != 30:
return False
t = '%s?' % shortKey
tHash = hashlib.sha256(t).digest()
# Check to see that first byte is \x00
if tHash[0] == '\x00':
return True
return False
GenerateKeys (1)

now
SKhHHQLDkHsAniFW2MRyVw9jwDDkKx
SHA256( ): ae172028e80ef37d3e01906ccd05441946c3efa9e4532ab20f5a6e25ce293840
sha256(?): 0057497a02482464d757500773d3d2c26badbcd94d5081d1cff9ea7c16fd2175
Validated.

need
SKhHHQLDkHsAniFW2MRyVw9jwDDkKx
SHA256( ): ae172028e80ef37d3e01906ccd05441946c3efa9e4532ab20f5a6e25ce293840
sha256(?): 0057497a02482464d757500773d3d2c26badbcd94d5081d1cff9ea7c16fd2175
Address: 17bYqJpPz3huoXuz6Dx6iLejuAHA2k2q3H
Validated.