Casascius python upgrade | Bitcointalksearch.org

stalker00075

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Merit: 0

Help men!

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legendary

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Merit: 2805

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Quote from: darosior on February 18, 2019, 03:28:35 PM

a Python library here.

why are you rounding N? That is not the correct value.

I am not really familiar with python but you may need to change sizeof(x) and sizeof(y) here to a hardcoded value '32' instead since x and y can be less than 32 bytes but you must return them with zeros appended.
Here is a unit test that must pass:

Code:

Private key: 128b87b572c379e92d8dd9f2f89118ec0bd8fe7ad6214312486d572d8718f8c7
public key: 04C7F4A880E496EE7335424E9613E7B29D37CEF9151DE1751D44E9159C699E07A20038BF72B3FF4FC35F1A6FF2E43F56DC4D5743BE3AFF67F1A7C5F6A9F227B47C

To OP:
You need to use another library on top of this one. You call your GetPrivateKey(shortKey) function with your mini private key and it will return an actual private key in hexadecimal formal. Then pass that into a key function in that library. Check out https://github.com/warner/python-ecdsa for example.

stalker00075

newbie

Activity: 54

Merit: 0

hi, can you please try to change the code

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)

darosior

sr. member

Activity: 279

Merit: 435

Quote from: stalker00075 on February 18, 2019, 12:52:15 PM

help please, who is strong in python
need get address of the private key

wiki code python

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.

Hi,

why do you generate your private key in base58 ? If you are looking for an example I made a tutorial here and (kind of) a Python library here.

stalker00075

newbie

Activity: 54

Merit: 0

help please, who is strong in python
need get address of the private key

wiki code python

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.

Topic: Casascius python upgrade (Read 382 times)