walletaid.py

"""
Walletaid created by Dwerg using Python 2.7

Code for converting to addresses and WIF
is borrowed from pywallet.
"""

import hashlib
import binascii
from ConfigParser import SafeConfigParser

#Opens config.ini and gets settings
config = SafeConfigParser()
config.read("config.ini")
pubprefix = config.get("settings", "pubkeyprefix")
privprefix = config.get("settings", "privkeyprefix")
compressed = config.getboolean("settings", "compressed")

#Calculates public key from a private key
class Point(object):
    def __init__(self, _x, _y, _order = None): self.x, self.y, self.order = _x, _y, _order

    def calc(self, top, bottom, other_x):
        l = (top * inverse_mod(bottom)) % p
        x3 = (l * l - self.x - other_x) % p
        return Point(x3, (l * (self.x - x3) - self.y) % p)

    def double(self):
        if self == INFINITY: return INFINITY
        return self.calc(3 * self.x * self.x, 2 * self.y, self.x)

    def __add__(self, other):
        if other == INFINITY: return self
        if self == INFINITY: return other
        if self.x == other.x:
            if (self.y + other.y) % p == 0: return INFINITY
            return self.double()
        return self.calc(other.y - self.y, other.x - self.x, other.x)

    def __mul__(self, e):
        if self.order: e %= self.order
        if e == 0 or self == INFINITY: return INFINITY
        result, q = INFINITY, self
        while e:
            if e&1: result += q
            e, q = e >> 1, q.double()
        return result

    def __str__(self):
        if self == INFINITY: return "infinity"
        return "%x %x" % (self.x, self.y)

def inverse_mod(a):
    if a < 0 or a >= p: a = a % p
    c, d, uc, vc, ud, vd = a, p, 1, 0, 0, 1
    while c:
        q, c, d = divmod(d, c) + (c,)
        uc, vc, ud, vd = ud - q*uc, vd - q*vc, uc, vc
    if ud > 0: return ud
    return ud + p

p, INFINITY = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2FL, Point(None, None) # secp256k1
g = Point(0x79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798L, 0x483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8L,
          0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141L)
#End of code used to calculate public key

#Base58 encoder
__b58chars = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
__b58base = len(__b58chars)

def b58encode(v):
    """ encode v, which is a string of bytes, to base58.
    """

    long_value = 0L
    for (i, c) in enumerate(v[::-1]):
        long_value += (256**i) * ord(c)

    result = ''
    while long_value >= __b58base:
        div, mod = divmod(long_value, __b58base)
        result = __b58chars[mod] + result
        long_value = div
    result = __b58chars[long_value] + result

    nPad = 0
    for c in v:
        if c == '\0': nPad += 1
        else: break

    return (__b58chars[0]*nPad) + result

#SHA-256 hashception function
def Hash(data):
    return hashlib.sha256(hashlib.sha256(data).digest()).digest()

#Takes hexadecimal public key, spits out address 
def hashtoaddr(a):
    md = hashlib.new('ripemd160')
    md.update(hashlib.sha256(binascii.unhexlify(a)).digest())
    md160 = md.digest()
    h = Hash(binascii.unhexlify(pubprefix)+md160)
    addr = md160 + h[0:4]
    return b58encode(binascii.unhexlify(pubprefix)+addr)

#Takes hexadecimal private key, spits out WIF
def hashtowif(b):
    presha = binascii.unhexlify(privprefix) + b
    if compressed: presha = presha + binascii.unhexlify("01")
    h = Hash(presha)
    key = presha + h[0:4]
    return b58encode(key)

#Takes hexadecimal private key, spits out address
def address(c):
    pubkey = str(g * c)
    pubkey = ("0" * (64 - pubkey.index(" "))) + pubkey
    #if pubkey[63] == " ":
    #    pubkey = "0" + pubkey
    #if pubkey[62] == " ":
    #    pubkey = "00" + pubkey
    if compressed:
        if int(pubkey[-1], base=16) % 2 == 0:
            pref = "02"
        else:
            pref = "03"
        pubkey = pubkey[0:64]
    else:
        pref = "04"
        if len(pubkey) < 129:
            pubkey = pubkey[:64] + "0" + pubkey[64:]
        pubkey = pubkey.replace(" ", "")
    return hashtoaddr(pref + pubkey)

#Loads wallet.dat into lists of addresses and private keys
with open('wallet.dat', 'rb') as f:
    count = 0
    klist = []
    header = binascii.unhexlify("f70001d63081d30201010420")
    data = f.read()
    header_index = data.find(header, 0)
    key = data[header_index + len(header): header_index + len(header) + 32]
    while True:
        if key not in klist:
            count += 1
            print "\rLoading wallet.dat {:0.2f} %  ".format(float(header_index) / len(data) * 100),
            klist.append(key)
            
        header_index = data.find(header,header_index + len(header) + 32)
        if header_index >= 0:
            key = data[header_index + len(header): header_index + len(header) + 32]
        else:
            break
print "\rLoading wallet.dat 100 %  \nLoaded {} keys from wallet.dat\n".format(count)

#Prompt user to paste address to search for
print "Paste address to search with CTRL+V. Leave blank to get all!"
keysearch = raw_input("Address: ")

#Search for address and print private key or dump everything to file
keyfile = open("foundkeys.txt","w")
found = 0
count = 0
while keysearch:
    for k in klist:
        count += 1
        addr = address(int(binascii.hexlify(k), base = 16))
        print "\rChecking key {}/{}".format(count, len(klist)),
        if addr == keysearch:
            privkey = hashtowif(k)
            print "\rPrivate key: " + privkey + "\n\nA copy is also in 'foundkeys.txt'"
            keyfile.write("Address: {}\nPrivate key: {}\n\n".format(addr, privkey))
            found = True
            break
    if not found:
        print "\nAddress was not found, try again or leave blank to get all."
        keysearch = raw_input("Address: ")
    else:
        break
else:
    for k in klist:
        count += 1
        print "\rCreating file {:0.2f} %  ".format(float(count) / len(klist) * 100),
        addr = address(int(binascii.hexlify(k), base = 16))
        privkey = hashtowif(k)
        keyfile.write("Address: {}\nPrivate key: {}\n\n".format(addr, privkey))
    print "\rCreating file 100 %   \n\nAll addresses and private keys saved in 'foundkeys.txt'\n"