pywallet.py

#!/usr/bin/env python
#-*- coding: utf-8 -*-
from __future__ import print_function
pywversion="2.2"
never_update=False

#
# jackjack's pywallet.py
# https://github.com/jackjack-jj/pywallet
# forked from Joric's pywallet.py
#


import sys
PY3 = sys.version_info.major > 2

import warnings
def warning_on_one_line(message, category, filename, lineno, file=None, line=None):
	return '%s:%s: %s: %s\n' % (filename, lineno, category.__name__, message)
warnings.formatwarning = warning_on_one_line
if PY3:
	warnings.warn("Python 3 support is still experimental, you may encounter bugs")
	import _thread as thread
	import functools
	raw_input = input
	xrange = range
	long = int
	unicode = str
	reduce = functools.reduce
else:
	import thread

missing_dep = []

try:
	from bsddb.db import *
except:
	try:
		from bsddb3.db import *
	except:
		missing_dep.append('bsddb')

import os, sys, time, re
pyw_filename = os.path.basename(__file__)
pyw_path = os.path.dirname(os.path.realpath(__file__))

try:
	import simplejson as json
except:
	import json

import bisect
import itertools
import unicodedata
import hmac
import getpass
import logging
import struct
import traceback
import socket
import types
import string
import hashlib
import random
import urllib
import math
import base64
import collections
import weakref
import binascii
from types import MethodType
import unittest

from datetime import datetime
from subprocess import *

import os
import os.path
import platform

def ordsix(x):
	if x.__class__ == int:return x
	return ord(x)
def chrsix(x):
	if not(x.__class__ in [int, long]):return x
	if PY3:return bytes([x])
	return chr(x)

def str_to_bytes(k):
	if k.__class__ == str and not hasattr(k, 'decode'):
		return bytes(k, 'ascii')
	return k
def bytes_to_str(k):
	if k.__class__ == bytes:
		return k.decode()
	if k.__class__ == unicode:
		return bytes_to_str(k.encode())
	return k

class Bdict(dict):
	def __init__(self, *a, **kw):
		super(Bdict, self).__init__(*a, **kw)
		for k, v in self.copy().items():
			try:del self[k]
			except:pass
			self[bytes_to_str(k)] = v
	def update(self, *a, **kw):
		other = self.__class__(*a, **kw)
		return super(Bdict, self).update(other)
	def pop(self, k, *a):
		return super(Bdict, self).pop(bytes_to_str(k), *a)
	def get(self, k, default=None):
		return super(Bdict, self).get(bytes_to_str(k), default)
	def __getitem__(self, k):
		return super(Bdict, self).__getitem__(bytes_to_str(k))
	def __setitem__(self, k, v):
		return super(Bdict, self).__setitem__(bytes_to_str(k), v)
	def __contains__(self, k):
		return super(Bdict, self).__contains__(bytes_to_str(k))
	def __repr__(self):
		return '%s(%s)'%(self.__class__.__name__, super(Bdict, self).__repr__())

max_version = 81000
json_db = Bdict({})
private_keys = []
private_hex_keys = []
passphrase = ""
global_merging_message = ["",""]
CNT = collections.namedtuple

balance_site = 'https://blockchain.info/q/addressbalance/'
backup_balance_site ='https://api.blockcypher.com/v1/btc/main/addrs/'

aversions = {}
for i in range(256):
	aversions[i] = "version %d" % i;
aversions[0] = 'Bitcoin';
aversions[48] = 'Litecoin';
aversions[52] = 'Namecoin';
aversions[111] = 'Testnet';

class Network(collections.namedtuple('Network', 'name p2pkh_prefix p2sh_prefix wif_prefix segwit_hrp')):
	instances = []
	def __init__(self, *a, **kw):
		self.__class__.instances.append(self)
		super(Network, self).__init__()
	def keyinfo(self, *a, **kw):
		pass

def eip55(hex_addr):
    if hex_addr[:2] == '0x':hex_addr = hex_addr[2:]
    hex_addr = hex_addr.lower()
    checksummed_buffer = ""
    hashed_address = bytes_to_str(binascii.hexlify(Keccak256(hex_addr).digest()))
    for nibble_index, character in enumerate(hex_addr):
        if character in "0123456789":
            checksummed_buffer += character
        elif character in "abcdef":
            hashed_address_nibble = int(hashed_address[nibble_index], 16)
            if hashed_address_nibble > 7:
                checksummed_buffer += character.upper()
            else:
                checksummed_buffer += character
        else:
            raise ValueError("Unrecognized hex character {} at position {}".format(character, nibble_index))
    return "0x" + checksummed_buffer

def ethereum_keyinfo(self, keyinfo, print_info=True):
	ethpubkey = keyinfo.uncompressed_public_key[1:]
	eth_hash = binascii.hexlify(Keccak256(ethpubkey).digest())[-40:]
	eth_addr = '0x' + bytes_to_str(eth_hash)
	if print_info and not keyinfo.compressed:
		print("Ethereum address:    %s"%eip55(eth_addr))
		print("Ethereum B58address: %s"%public_key_to_bc_address(eth_hash, 33))
	return CNT('SubKeyInfo', 'addr')(eth_addr)

network_bitcoin = Network('Bitcoin', 0, 5, 0x80, 'bc')
network_bitcoin_testnet3 = Network('Bitcoin-Testnet3', 0x6f, 0xc4, 0xef, 'tb')
network_ethereum = Network('Ethereum', 0, 5, 0x80, 'eth')
network_ethereum.keyinfo = MethodType(ethereum_keyinfo, network_ethereum)
network = network_bitcoin
def find_network(name):
	for n in Network.instances:
		if n.name.lower() == name.lower():
			return n
	return None

wallet_dir = ""
wallet_name = ""

ko = 1e3
kio = 1024
Mo = 1e6
Mio = 1024 ** 2
Go = 1e9
Gio = 1024 ** 3
To = 1e12
Tio = 1024 ** 4

prekeys = [binascii.unhexlify("308201130201010420"), binascii.unhexlify("308201120201010420")]
postkeys = [binascii.unhexlify("a081a530"), binascii.unhexlify("81a530")]

KeyInfo = collections.namedtuple('KeyInfo', 'secret private_key public_key uncompressed_public_key addr wif compressed')

def plural(a):
	if a>=2:return 's'
	return ''

def systype():
	if platform.system() == "Darwin":return 'Mac'
	elif platform.system() == "Windows":return 'Win'
	return 'Linux'

def determine_db_dir():
	if wallet_dir in "":
		if platform.system() == "Darwin":
			return os.path.expanduser("~/Library/Application Support/Bitcoin/")
		elif platform.system() == "Windows":
			return os.path.join(os.environ['APPDATA'], "Bitcoin")
		return os.path.expanduser("~/.bitcoin")
	else:
		return wallet_dir

def determine_db_name():
	if wallet_name in "":
		return "wallet.dat"
	else:
		return wallet_name

########################
########################

from math import log
from operator import xor
from copy import deepcopy
RoundConstants=[1,32898,0x800000000000808a,0x8000000080008000,32907,2147483649,0x8000000080008081,0x8000000000008009,138,136,2147516425,2147483658,2147516555,0x800000000000008b,0x8000000000008089,0x8000000000008003,0x8000000000008002,0x8000000000000080,32778,0x800000008000000a,0x8000000080008081,0x8000000000008080,2147483649,0x8000000080008008]
RotationConstants=[[0,1,62,28,27],[36,44,6,55,20],[3,10,43,25,39],[41,45,15,21,8],[18,2,61,56,14]]
Masks=[(1<<i)-1 for i in range(65)]
def bits2bytes(x):return(int(x)+7)//8
def rol(value,left,bits):top=value>>bits-left;bot=(value&Masks[bits-left])<<left;return bot|top
def ror(value,right,bits):top=value>>right;bot=(value&Masks[right])<<bits-right;return bot|top
def multirate_padding(used_bytes,align_bytes):
	padlen=align_bytes-used_bytes
	if padlen==0:padlen=align_bytes
	if padlen==1:return[129]
	else:return[1]+[0]*(padlen-2)+[128]
def keccak_f(state):
	def round(A,RC):
		W,H=state.W,state.H;rangeW,rangeH=state.rangeW,state.rangeH;lanew=state.lanew;zero=state.zero;C=[reduce(xor,A[x])for x in rangeW];D=[0]*W
		for x in rangeW:
			D[x]=C[(x-1)%W]^rol(C[(x+1)%W],1,lanew)
			for y in rangeH:A[x][y]^=D[x]
		B=zero()
		for x in rangeW:
			for y in rangeH:B[y%W][(2*x+3*y)%H]=rol(A[x][y],RotationConstants[y][x],lanew)
		for x in rangeW:
			for y in rangeH:A[x][y]=B[x][y]^~ B[(x+1)%W][y]&B[(x+2)%W][y]
		A[0][0]^=RC
	l=int(log(state.lanew,2));nr=12+2*l
	for ir in xrange(nr):round(state.s,RoundConstants[ir])
class KeccakState:
	W=5;H=5;rangeW=range(W);rangeH=range(H)
	@staticmethod
	def zero():return[[0]*KeccakState.W for x in KeccakState.rangeH]
	@staticmethod
	def format(st):
		rows=[]
		def fmt(x):return'%016x'%x
		for y in KeccakState.rangeH:
			row=[]
			for x in rangeW:row.append(fmt(st[x][y]))
			rows.append(' '.join(row))
		return '\n'.join(rows)
	@staticmethod
	def lane2bytes(s,w):
		o=[]
		for b in range(0,w,8):o.append(s>>b&255)
		return o
	@staticmethod
	def bytes2lane(bb):
		r=0
		for b in reversed(bb):r=r<<8|b
		return r
	@staticmethod
	def bytes2str(bb):return str_to_bytes('').join(map(chrsix,bb))
	@staticmethod
	def str2bytes(ss):return map(ordsix,ss)
	def __init__(self,bitrate,b):self.bitrate=bitrate;self.b=b;assert self.bitrate%8==0;self.bitrate_bytes=bits2bytes(self.bitrate);assert self.b%25==0;self.lanew=self.b//25;self.s=KeccakState.zero()
	def __str__(self):return KeccakState.format(self.s)
	def absorb(self,bb):
		assert len(bb)==self.bitrate_bytes;bb+=[0]*bits2bytes(self.b-self.bitrate);i=0
		for y in self.rangeH:
			for x in self.rangeW:self.s[x][y]^=KeccakState.bytes2lane(bb[i:i+8]);i+=8
	def squeeze(self):return self.get_bytes()[:self.bitrate_bytes]
	def get_bytes(self):
		out=[0]*bits2bytes(self.b);i=0
		for y in self.rangeH:
			for x in self.rangeW:v=KeccakState.lane2bytes(self.s[x][y],self.lanew);out[i:i+8]=v;i+=8
		return out
	def set_bytes(self,bb):
		i=0
		for y in self.rangeH:
			for x in self.rangeW:self.s[x][y]=KeccakState.bytes2lane(bb[i:i+8]);i+=8
class KeccakSponge:
	def __init__(self,bitrate,width,padfn,permfn):self.state=KeccakState(bitrate,width);self.padfn=padfn;self.permfn=permfn;self.buffer=[]
	def copy(self):return deepcopy(self)
	def absorb_block(self,bb):assert len(bb)==self.state.bitrate_bytes;self.state.absorb(bb);self.permfn(self.state)
	def absorb(self,s):
		self.buffer+=KeccakState.str2bytes(s)
		while len(self.buffer)>=self.state.bitrate_bytes:self.absorb_block(self.buffer[:self.state.bitrate_bytes]);self.buffer=self.buffer[self.state.bitrate_bytes:]
	def absorb_final(self):padded=self.buffer+self.padfn(len(self.buffer),self.state.bitrate_bytes);self.absorb_block(padded);self.buffer=[]
	def squeeze_once(self):rc=self.state.squeeze();self.permfn(self.state);return rc
	def squeeze(self,l):
		Z=self.squeeze_once()
		while len(Z)<l:Z+=self.squeeze_once()
		return Z[:l]
class KeccakHash:
	def __init__(self,bitrate_bits,capacity_bits,output_bits):assert bitrate_bits+capacity_bits in(25,50,100,200,400,800,1600);self.sponge=KeccakSponge(bitrate_bits,bitrate_bits+capacity_bits,multirate_padding,keccak_f);assert output_bits%8==0;self.digest_size=bits2bytes(output_bits);self.block_size=bits2bytes(bitrate_bits)
	def __repr__(self):inf=self.sponge.state.bitrate,self.sponge.state.b-self.sponge.state.bitrate,self.digest_size*8;return'<KeccakHash with r=%d, c=%d, image=%d>'%inf
	def copy(self):return deepcopy(self)
	def update(self,s):self.sponge.absorb(s)
	def digest(self):finalised=self.sponge.copy();finalised.absorb_final();digest=finalised.squeeze(self.digest_size);return KeccakState.bytes2str(digest)
	def hexdigest(self):return binascii.hexlify(self.digest())
	@staticmethod
	def preset(bitrate_bits,capacity_bits,output_bits):
		def create(initial_input=None):
			h=KeccakHash(bitrate_bits,capacity_bits,output_bits)
			if not(initial_input is None):h.update(initial_input)
			return h
		return create
Keccak256 = KeccakHash.preset(1088, 512, 256)

########################
########################

########################
# begin of aes.py code #
########################

# from the SlowAES project, http://code.google.com/p/slowaes (aes.py)

def append_PKCS7_padding(s):
	"""return s padded to a multiple of 16-bytes by PKCS7 padding"""
	numpads = 16 - (len(s)%16)
	return s + numpads*chrsix(numpads)

def strip_PKCS7_padding(s):
	"""return s stripped of PKCS7 padding"""
	if len(s)%16 or not s:
		raise ValueError("String of len %d can't be PCKS7-padded" % len(s))
	numpads = ordsix(s[-1])
	if numpads > 16:
		raise ValueError("String ending with %r can't be PCKS7-padded" % s[-1])
	return s[:-numpads]

class AES(object):
	# valid key sizes
	keySize = dict(SIZE_128=16, SIZE_192=24, SIZE_256=32)

	# Rijndael S-box
	sbox =  [0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67,
			0x2b, 0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59,
			0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7,
			0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1,
			0x71, 0xd8, 0x31, 0x15, 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05,
			0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83,
			0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29,
			0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b,
			0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, 0xd0, 0xef, 0xaa,
			0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c,
			0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc,
			0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec,
			0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19,
			0x73, 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee,
			0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49,
			0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
			0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4,
			0xea, 0x65, 0x7a, 0xae, 0x08, 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6,
			0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, 0x70,
			0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9,
			0x86, 0xc1, 0x1d, 0x9e, 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e,
			0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, 0x8c, 0xa1,
			0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0,
			0x54, 0xbb, 0x16]

	# Rijndael Inverted S-box
	rsbox = [0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3,
			0x9e, 0x81, 0xf3, 0xd7, 0xfb , 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f,
			0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb , 0x54,
			0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b,
			0x42, 0xfa, 0xc3, 0x4e , 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24,
			0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25 , 0x72, 0xf8,
			0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d,
			0x65, 0xb6, 0x92 , 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda,
			0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84 , 0x90, 0xd8, 0xab,
			0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3,
			0x45, 0x06 , 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1,
			0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b , 0x3a, 0x91, 0x11, 0x41,
			0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6,
			0x73 , 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9,
			0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e , 0x47, 0xf1, 0x1a, 0x71, 0x1d,
			0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b ,
			0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0,
			0xfe, 0x78, 0xcd, 0x5a, 0xf4 , 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07,
			0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f , 0x60,
			0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f,
			0x93, 0xc9, 0x9c, 0xef , 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5,
			0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61 , 0x17, 0x2b,
			0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55,
			0x21, 0x0c, 0x7d]

	def getSBoxValue(self,num):
		"""Retrieves a given S-Box Value"""
		return self.sbox[num]

	def getSBoxInvert(self,num):
		"""Retrieves a given Inverted S-Box Value"""
		return self.rsbox[num]

	def rotate(self, word):
		""" Rijndael's key schedule rotate operation.

		Rotate a word eight bits to the left: eg, rotate(1d2c3a4f) == 2c3a4f1d
		Word is an char list of size 4 (32 bits overall).
		"""
		return word[1:] + word[:1]

	# Rijndael Rcon
	Rcon = [0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36,
			0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97,
			0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72,
			0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66,
			0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04,
			0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d,
			0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3,
			0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61,
			0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a,
			0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40,
			0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc,
			0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5,
			0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a,
			0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d,
			0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c,
			0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35,
			0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4,
			0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc,
			0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08,
			0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a,
			0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d,
			0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2,
			0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74,
			0xe8, 0xcb ]

	def getRconValue(self, num):
		"""Retrieves a given Rcon Value"""
		return self.Rcon[num]

	def core(self, word, iteration):
		"""Key schedule core."""
		# rotate the 32-bit word 8 bits to the left
		word = self.rotate(word)
		# apply S-Box substitution on all 4 parts of the 32-bit word
		for i in range(4):
			word[i] = self.getSBoxValue(word[i])
		# XOR the output of the rcon operation with i to the first part
		# (leftmost) only
		word[0] = word[0] ^ self.getRconValue(iteration)
		return word

	def expandKey(self, key, size, expandedKeySize):
		"""Rijndael's key expansion.

		Expands an 128,192,256 key into an 176,208,240 bytes key

		expandedKey is a char list of large enough size,
		key is the non-expanded key.
		"""
		# current expanded keySize, in bytes
		currentSize = 0
		rconIteration = 1
		expandedKey = [0] * expandedKeySize

		# set the 16, 24, 32 bytes of the expanded key to the input key
		for j in range(size):
			expandedKey[j] = key[j]
		currentSize += size

		while currentSize < expandedKeySize:
			# assign the previous 4 bytes to the temporary value t
			t = expandedKey[currentSize-4:currentSize]

			# every 16,24,32 bytes we apply the core schedule to t
			# and increment rconIteration afterwards
			if currentSize % size == 0:
				t = self.core(t, rconIteration)
				rconIteration += 1
			# For 256-bit keys, we add an extra sbox to the calculation
			if size == self.keySize["SIZE_256"] and ((currentSize % size) == 16):
				for l in range(4): t[l] = self.getSBoxValue(t[l])

			# We XOR t with the four-byte block 16,24,32 bytes before the new
			# expanded key.  This becomes the next four bytes in the expanded
			# key.
			for m in range(4):
				expandedKey[currentSize] = expandedKey[currentSize - size] ^ \
						t[m]
				currentSize += 1

		return expandedKey

	def addRoundKey(self, state, roundKey):
		"""Adds (XORs) the round key to the state."""
		for i in range(16):
			state[i] ^= roundKey[i]
		return state

	def createRoundKey(self, expandedKey, roundKeyPointer):
		"""Create a round key.
		Creates a round key from the given expanded key and the
		position within the expanded key.
		"""
		roundKey = [0] * 16
		for i in range(4):
			for j in range(4):
				roundKey[j*4+i] = expandedKey[roundKeyPointer + i*4 + j]
		return roundKey

	def galois_multiplication(self, a, b):
		"""Galois multiplication of 8 bit characters a and b."""
		p = 0
		for counter in range(8):
			if b & 1: p ^= a
			hi_bit_set = a & 0x80
			a <<= 1
			# keep a 8 bit
			a &= 0xFF
			if hi_bit_set:
				a ^= 0x1b
			b >>= 1
		return p

	#
	# substitute all the values from the state with the value in the SBox
	# using the state value as index for the SBox
	#
	def subBytes(self, state, isInv):
		if isInv: getter = self.getSBoxInvert
		else: getter = self.getSBoxValue
		for i in range(16): state[i] = getter(state[i])
		return state

	# iterate over the 4 rows and call shiftRow() with that row
	def shiftRows(self, state, isInv):
		for i in range(4):
			state = self.shiftRow(state, i*4, i, isInv)
		return state

	# each iteration shifts the row to the left by 1
	def shiftRow(self, state, statePointer, nbr, isInv):
		for i in range(nbr):
			if isInv:
				state[statePointer:statePointer+4] = \
						state[statePointer+3:statePointer+4] + \
						state[statePointer:statePointer+3]
			else:
				state[statePointer:statePointer+4] = \
						state[statePointer+1:statePointer+4] + \
						state[statePointer:statePointer+1]
		return state

	# galois multiplication of the 4x4 matrix
	def mixColumns(self, state, isInv):
		# iterate over the 4 columns
		for i in range(4):
			# construct one column by slicing over the 4 rows
			column = state[i:i+16:4]
			# apply the mixColumn on one column
			column = self.mixColumn(column, isInv)
			# put the values back into the state
			state[i:i+16:4] = column

		return state

	# galois multiplication of 1 column of the 4x4 matrix
	def mixColumn(self, column, isInv):
		if isInv: mult = [14, 9, 13, 11]
		else: mult = [2, 1, 1, 3]
		cpy = list(column)
		g = self.galois_multiplication

		column[0] = g(cpy[0], mult[0]) ^ g(cpy[3], mult[1]) ^ \
					g(cpy[2], mult[2]) ^ g(cpy[1], mult[3])
		column[1] = g(cpy[1], mult[0]) ^ g(cpy[0], mult[1]) ^ \
					g(cpy[3], mult[2]) ^ g(cpy[2], mult[3])
		column[2] = g(cpy[2], mult[0]) ^ g(cpy[1], mult[1]) ^ \
					g(cpy[0], mult[2]) ^ g(cpy[3], mult[3])
		column[3] = g(cpy[3], mult[0]) ^ g(cpy[2], mult[1]) ^ \
					g(cpy[1], mult[2]) ^ g(cpy[0], mult[3])
		return column

	# applies the 4 operations of the forward round in sequence
	def aes_round(self, state, roundKey):
		state = self.subBytes(state, False)
		state = self.shiftRows(state, False)
		state = self.mixColumns(state, False)
		state = self.addRoundKey(state, roundKey)
		return state

	# applies the 4 operations of the inverse round in sequence
	def aes_invRound(self, state, roundKey):
		state = self.shiftRows(state, True)
		state = self.subBytes(state, True)
		state = self.addRoundKey(state, roundKey)
		state = self.mixColumns(state, True)
		return state

	# Perform the initial operations, the standard round, and the final
	# operations of the forward aes, creating a round key for each round
	def aes_main(self, state, expandedKey, nbrRounds):
		state = self.addRoundKey(state, self.createRoundKey(expandedKey, 0))
		i = 1
		while i < nbrRounds:
			state = self.aes_round(state,
								   self.createRoundKey(expandedKey, 16*i))
			i += 1
		state = self.subBytes(state, False)
		state = self.shiftRows(state, False)
		state = self.addRoundKey(state,
								 self.createRoundKey(expandedKey, 16*nbrRounds))
		return state

	# Perform the initial operations, the standard round, and the final
	# operations of the inverse aes, creating a round key for each round
	def aes_invMain(self, state, expandedKey, nbrRounds):
		state = self.addRoundKey(state,
								 self.createRoundKey(expandedKey, 16*nbrRounds))
		i = nbrRounds - 1
		while i > 0:
			state = self.aes_invRound(state,
									  self.createRoundKey(expandedKey, 16*i))
			i -= 1
		state = self.shiftRows(state, True)
		state = self.subBytes(state, True)
		state = self.addRoundKey(state, self.createRoundKey(expandedKey, 0))
		return state

	# encrypts a 128 bit input block against the given key of size specified
	def encrypt(self, iput, key, size):
		output = [0] * 16
		# the number of rounds
		nbrRounds = 0
		# the 128 bit block to encode
		block = [0] * 16
		# set the number of rounds
		if size == self.keySize["SIZE_128"]: nbrRounds = 10
		elif size == self.keySize["SIZE_192"]: nbrRounds = 12
		elif size == self.keySize["SIZE_256"]: nbrRounds = 14
		else: return None

		# the expanded keySize
		expandedKeySize = 16*(nbrRounds+1)

		# Set the block values, for the block:
		# a0,0 a0,1 a0,2 a0,3
		# a1,0 a1,1 a1,2 a1,3
		# a2,0 a2,1 a2,2 a2,3
		# a3,0 a3,1 a3,2 a3,3
		# the mapping order is a0,0 a1,0 a2,0 a3,0 a0,1 a1,1 ... a2,3 a3,3
		#
		# iterate over the columns
		for i in range(4):
			# iterate over the rows
			for j in range(4):
				block[(i+(j*4))] = iput[(i*4)+j]

		# expand the key into an 176, 208, 240 bytes key
		# the expanded key
		expandedKey = self.expandKey(key, size, expandedKeySize)

		# encrypt the block using the expandedKey
		block = self.aes_main(block, expandedKey, nbrRounds)

		# unmap the block again into the output
		for k in range(4):
			# iterate over the rows
			for l in range(4):
				output[(k*4)+l] = block[(k+(l*4))]
		return output

	# decrypts a 128 bit input block against the given key of size specified
	def decrypt(self, iput, key, size):
		output = [0] * 16
		# the number of rounds
		nbrRounds = 0
		# the 128 bit block to decode
		block = [0] * 16
		# set the number of rounds
		if size == self.keySize["SIZE_128"]: nbrRounds = 10
		elif size == self.keySize["SIZE_192"]: nbrRounds = 12
		elif size == self.keySize["SIZE_256"]: nbrRounds = 14
		else: return None

		# the expanded keySize
		expandedKeySize = 16*(nbrRounds+1)

		# Set the block values, for the block:
		# a0,0 a0,1 a0,2 a0,3
		# a1,0 a1,1 a1,2 a1,3
		# a2,0 a2,1 a2,2 a2,3
		# a3,0 a3,1 a3,2 a3,3
		# the mapping order is a0,0 a1,0 a2,0 a3,0 a0,1 a1,1 ... a2,3 a3,3

		# iterate over the columns
		for i in range(4):
			# iterate over the rows
			for j in range(4):
				block[(i+(j*4))] = iput[(i*4)+j]
		# expand the key into an 176, 208, 240 bytes key
		expandedKey = self.expandKey(key, size, expandedKeySize)
		# decrypt the block using the expandedKey
		block = self.aes_invMain(block, expandedKey, nbrRounds)
		# unmap the block again into the output
		for k in range(4):
			# iterate over the rows
			for l in range(4):
				output[(k*4)+l] = block[(k+(l*4))]
		return output

class AESModeOfOperation(object):

	aes = AES()

	# structure of supported modes of operation
	modeOfOperation = dict(OFB=0, CFB=1, CBC=2)

	# converts a 16 character string into a number array
	def convertString(self, string, start, end, mode):
		if end - start > 16: end = start + 16
		if mode == self.modeOfOperation["CBC"]: ar = [0] * 16
		else: ar = []

		i = start
		j = 0
		while len(ar) < end - start:
			ar.append(0)
		while i < end:
			ar[j] = ordsix(string[i])
			j += 1
			i += 1
		return ar

	# Mode of Operation Encryption
	# stringIn - Input String
	# mode - mode of type modeOfOperation
	# hexKey - a hex key of the bit length size
	# size - the bit length of the key
	# hexIV - the 128 bit hex Initilization Vector
	def encrypt(self, stringIn, mode, key, size, IV):
		if len(key) % size:
			return None
		if len(IV) % 16:
			return None
		# the AES input/output
		plaintext = []
		iput = [0] * 16
		output = []
		ciphertext = [0] * 16
		# the output cipher string
		cipherOut = []
		# char firstRound
		firstRound = True
		if stringIn != None:
			for j in range(int(math.ceil(float(len(stringIn))//16))):
				start = j*16
				end = j*16+16
				if  end > len(stringIn):
					end = len(stringIn)
				plaintext = self.convertString(stringIn, start, end, mode)
				# print('PT@%s:%s' % (j, plaintext))
				if mode == self.modeOfOperation["CFB"]:
					if firstRound:
						output = self.aes.encrypt(IV, key, size)
						firstRound = False
					else:
						output = self.aes.encrypt(iput, key, size)
					for i in range(16):
						if len(plaintext)-1 < i:
							ciphertext[i] = 0 ^ output[i]
						elif len(output)-1 < i:
							ciphertext[i] = plaintext[i] ^ 0
						elif len(plaintext)-1 < i and len(output) < i:
							ciphertext[i] = 0 ^ 0
						else:
							ciphertext[i] = plaintext[i] ^ output[i]
					for k in range(end-start):
						cipherOut.append(ciphertext[k])
					iput = ciphertext
				elif mode == self.modeOfOperation["OFB"]:
					if firstRound:
						output = self.aes.encrypt(IV, key, size)
						firstRound = False
					else:
						output = self.aes.encrypt(iput, key, size)
					for i in range(16):
						if len(plaintext)-1 < i:
							ciphertext[i] = 0 ^ output[i]
						elif len(output)-1 < i:
							ciphertext[i] = plaintext[i] ^ 0
						elif len(plaintext)-1 < i and len(output) < i:
							ciphertext[i] = 0 ^ 0
						else:
							ciphertext[i] = plaintext[i] ^ output[i]
					for k in range(end-start):
						cipherOut.append(ciphertext[k])
					iput = output
				elif mode == self.modeOfOperation["CBC"]:
					for i in range(16):
						if firstRound:
							iput[i] =  plaintext[i] ^ IV[i]
						else:
							iput[i] =  plaintext[i] ^ ciphertext[i]
					# print('IP@%s:%s' % (j, iput))
					firstRound = False
					ciphertext = self.aes.encrypt(iput, key, size)
					# always 16 bytes because of the padding for CBC
					for k in range(16):
						cipherOut.append(ciphertext[k])
		return mode, len(stringIn), cipherOut

	# Mode of Operation Decryption
	# cipherIn - Encrypted String
	# originalsize - The unencrypted string length - required for CBC
	# mode - mode of type modeOfOperation
	# key - a number array of the bit length size
	# size - the bit length of the key
	# IV - the 128 bit number array Initilization Vector
	def decrypt(self, cipherIn, originalsize, mode, key, size, IV):
		# cipherIn = unescCtrlChars(cipherIn)
		if len(key) % size:
			return None
		if len(IV) % 16:
			return None
		# the AES input/output
		ciphertext = []
		iput = []
		output = []
		plaintext = [0] * 16
		# the output plain text string
		stringOut = b''
		# char firstRound
		firstRound = True
		if cipherIn != None:
			for j in range(int(math.ceil(float(len(cipherIn))//16))):
				start = j*16
				end = j*16+16
				if j*16+16 > len(cipherIn):
					end = len(cipherIn)
				ciphertext = cipherIn[start:end]
				if mode == self.modeOfOperation["CFB"]:
					if firstRound:
						output = self.aes.encrypt(IV, key, size)
						firstRound = False
					else:
						output = self.aes.encrypt(iput, key, size)
					for i in range(16):
						if len(output)-1 < i:
							plaintext[i] = 0 ^ ciphertext[i]
						elif len(ciphertext)-1 < i:
							plaintext[i] = output[i] ^ 0
						elif len(output)-1 < i and len(ciphertext) < i:
							plaintext[i] = 0 ^ 0
						else:
							plaintext[i] = output[i] ^ ciphertext[i]
					for k in range(end-start):
						stringOut += chrsix(plaintext[k])
					iput = ciphertext
				elif mode == self.modeOfOperation["OFB"]:
					if firstRound:
						output = self.aes.encrypt(IV, key, size)
						firstRound = False
					else:
						output = self.aes.encrypt(iput, key, size)
					for i in range(16):
						if len(output)-1 < i:
							plaintext[i] = 0 ^ ciphertext[i]
						elif len(ciphertext)-1 < i:
							plaintext[i] = output[i] ^ 0
						elif len(output)-1 < i and len(ciphertext) < i:
							plaintext[i] = 0 ^ 0
						else:
							plaintext[i] = output[i] ^ ciphertext[i]
					for k in range(end-start):
						stringOut += chrsix(plaintext[k])
					iput = output
				elif mode == self.modeOfOperation["CBC"]:
					output = self.aes.decrypt(ciphertext, key, size)
					for i in range(16):
						if firstRound:
							plaintext[i] = IV[i] ^ output[i]
						else:
							plaintext[i] = iput[i] ^ output[i]
					firstRound = False
					if not(originalsize is None) and originalsize < end:
						for k in range(originalsize-start):
							stringOut += chrsix(plaintext[k])
					else:
						for k in range(end-start):
							stringOut += chrsix(plaintext[k])
					iput = ciphertext
		return stringOut

######################
# end of aes.py code #
######################

###################################
# pywallet crypter implementation #
###################################

class Crypter_pycrypto( object ):
	def SetKeyFromPassphrase(self, vKeyData, vSalt, nDerivIterations, nDerivationMethod):
		if nDerivationMethod != 0:
			return 0
		data = str_to_bytes(vKeyData) + vSalt
		for i in xrange(nDerivIterations):
			data = hashlib.sha512(data).digest()
		self.SetKey(data[0:32])
		self.SetIV(data[32:32+16])
		return len(data)

	def SetKey(self, key):
		self.chKey = key

	def SetIV(self, iv):
		self.chIV = iv[0:16]

	def Encrypt(self, data):
		return AES.new(self.chKey,AES.MODE_CBC,self.chIV).encrypt(append_PKCS7_padding(data))

	def Decrypt(self, data):
		return AES.new(self.chKey,AES.MODE_CBC,self.chIV).decrypt(data)[0:32]

class Crypter_ssl(object):
	def __init__(self):
		self.chKey = ctypes.create_string_buffer (32)
		self.chIV = ctypes.create_string_buffer (16)

	def SetKeyFromPassphrase(self, vKeyData, vSalt, nDerivIterations, nDerivationMethod):
		if nDerivationMethod != 0:
			return 0
		strKeyData = ctypes.create_string_buffer (vKeyData)
		chSalt = ctypes.create_string_buffer (vSalt)
		return ssl.EVP_BytesToKey(ssl.EVP_aes_256_cbc(), ssl.EVP_sha512(), chSalt, strKeyData,
			len(vKeyData), nDerivIterations, ctypes.byref(self.chKey), ctypes.byref(self.chIV))

	def SetKey(self, key):
		self.chKey = ctypes.create_string_buffer(key)

	def SetIV(self, iv):
		self.chIV = ctypes.create_string_buffer(iv)

	def Encrypt(self, data):
		buf = ctypes.create_string_buffer(len(data) + 16)
		written = ctypes.c_int(0)
		final = ctypes.c_int(0)
		ctx = ssl.EVP_CIPHER_CTX_new()
		ssl.EVP_CIPHER_CTX_init(ctx)
		ssl.EVP_EncryptInit_ex(ctx, ssl.EVP_aes_256_cbc(), None, self.chKey, self.chIV)
		ssl.EVP_EncryptUpdate(ctx, buf, ctypes.byref(written), data, len(data))
		output = buf.raw[:written.value]
		ssl.EVP_EncryptFinal_ex(ctx, buf, ctypes.byref(final))
		output += buf.raw[:final.value]
		return output

	def Decrypt(self, data):
		buf = ctypes.create_string_buffer(len(data) + 16)
		written = ctypes.c_int(0)
		final = ctypes.c_int(0)
		ctx = ssl.EVP_CIPHER_CTX_new()
		ssl.EVP_CIPHER_CTX_init(ctx)
		ssl.EVP_DecryptInit_ex(ctx, ssl.EVP_aes_256_cbc(), None, self.chKey, self.chIV)
		ssl.EVP_DecryptUpdate(ctx, buf, ctypes.byref(written), data, len(data))
		output = buf.raw[:written.value]
		ssl.EVP_DecryptFinal_ex(ctx, buf, ctypes.byref(final))
		output += buf.raw[:final.value]
		return output

class Crypter_pure(object):
	def __init__(self):
		self.m = AESModeOfOperation()
		self.cbc = self.m.modeOfOperation["CBC"]
		self.sz = self.m.aes.keySize["SIZE_256"]

	def SetKeyFromPassphrase(self, vKeyData, vSalt, nDerivIterations, nDerivationMethod):
		if nDerivationMethod != 0:
			return 0
		data = str_to_bytes(vKeyData) + vSalt
		for i in xrange(nDerivIterations):
			data = hashlib.sha512(data).digest()
		self.SetKey(data[0:32])
		self.SetIV(data[32:32+16])
		return len(data)

	def SetKey(self, key):
		self.chKey = [ordsix(i) for i in key]

	def SetIV(self, iv):
		self.chIV = [ordsix(i) for i in iv]

	def Encrypt(self, data):
		mode, size, cypher = self.m.encrypt(append_PKCS7_padding(data), self.cbc, self.chKey, self.sz, self.chIV)
		return b''.join(map(chrsix, cypher))

	def Decrypt(self, data):
		chData = [ordsix(i) for i in data]
		return self.m.decrypt(chData, self.sz, self.cbc, self.chKey, self.sz, self.chIV)

crypter = None
if crypter is None:
	try:
		from Crypto.Cipher import AES
		crypter = Crypter_pycrypto()
	except:
		try:
			import ctypes
			import ctypes.util
			ssl = ctypes.cdll.LoadLibrary (ctypes.util.find_library ('ssl') or 'libeay32')
			crypter = Crypter_ssl()
		except:
			crypter = Crypter_pure()
			logging.warning("pycrypto or libssl not found, decryption may be slow")


##########################################
# end of pywallet crypter implementation #
##########################################

def bytes_to_int(bytes):
	result = 0
	for b in bytes:
		result = result * 256 + ordsix(b)
	return result

def int_to_bytes(value, length = None):
	if not length and value == 0:
		result = [0]
	else:
		result = []
		for i in range(0, length or 1+int(math.log(value, 2**8))):
			result.append(value >> (i * 8) & 0xff)
		result.reverse()
	return str(bytearray(result))

# secp256k1

_p = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F
_r = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141
_b = 0x0000000000000000000000000000000000000000000000000000000000000007
_a = 0x0000000000000000000000000000000000000000000000000000000000000000
_Gx = 0x79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798
_Gy = 0x483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8

try:
	import ecdsa
	from ecdsa import der
	curve_secp256k1 = ecdsa.ellipticcurve.CurveFp (_p, _a, _b)
	generator_secp256k1 = g = ecdsa.ellipticcurve.Point (curve_secp256k1, _Gx, _Gy, _r)
	randrange = random.SystemRandom().randrange
	secp256k1 = ecdsa.curves.Curve ( "secp256k1", curve_secp256k1, generator_secp256k1, (1, 3, 132, 0, 10) )
	ecdsa.curves.curves.append (secp256k1)
except:
	missing_dep.append('ecdsa')

# python-ecdsa code (EC_KEY implementation)

class CurveFp( object ):
	def __init__( self, p, a, b ):
		self.__p = p
		self.__a = a
		self.__b = b

	def p( self ):
		return self.__p

	def a( self ):
		return self.__a

	def b( self ):
		return self.__b

	def contains_point( self, x, y ):
		return ( y * y - ( x * x * x + self.__a * x + self.__b ) ) % self.__p == 0

	def sqrt_root(self, x):
		return pow(x, (self.__p + 1) // 4, self.__p)

	def y_from_x(self, x, y_odd):
		y = self.sqrt_root(( x * x * x + self.__a * x + self.__b ) % self.__p)
		if (y % 2 == 1) == y_odd:
			return y
		else:
			return self.__p - y

class Point( object ):
	def __init__( self, curve, x, y = None, order = None, y_odd = None ):
		self.__curve = curve
		self.__x = x
		if y != None or curve == None:
			self.__y = y
		else:
			self.__y = self.__curve.y_from_x(self.__x, y_odd)
		self.__order = order
		if self.__curve: assert self.__curve.contains_point( self.__x, self.__y )
		if order: assert self * order == INFINITY

	def __add__( self, other ):
		if other == INFINITY: return self
		if self == INFINITY: return other
		assert self.__curve == other.__curve
		if self.__x == other.__x:
			if ( self.__y + other.__y ) % self.__curve.p() == 0:
				return INFINITY
			else:
				return self.double()

		p = self.__curve.p()
		l = ( ( other.__y - self.__y ) * \
					inverse_mod( other.__x - self.__x, p ) ) % p
		x3 = ( l * l - self.__x - other.__x ) % p
		y3 = ( l * ( self.__x - x3 ) - self.__y ) % p
		return Point( self.__curve, x3, y3 )

	def __mul__( self, other ):
		def leftmost_bit( x ):
			assert x > 0
			result = 1
			while result <= x: result = 2 * result
			return result // 2

		e = other
		if self.__order: e = e % self.__order
		if e == 0: return INFINITY
		if self == INFINITY: return INFINITY
		assert e > 0
		e3 = 3 * e
		negative_self = Point( self.__curve, self.__x, -self.__y, self.__order )
		i = leftmost_bit( e3 ) // 2
		result = self
		while i > 1:
			result = result.double()
			if ( e3 & i ) != 0 and ( e & i ) == 0: result = result + self
			if ( e3 & i ) == 0 and ( e & i ) != 0: result = result + negative_self
			i = i // 2
		return result

	def __rmul__( self, other ):
		return self * other

	def __str__( self ):
		if self == INFINITY: return "infinity"
		return "(%d,%d)" % ( self.__x, self.__y )

	def double( self ):
		if self == INFINITY:
			return INFINITY

		p = self.__curve.p()
		a = self.__curve.a()
		l = ( ( 3 * self.__x * self.__x + a ) * \
					inverse_mod( 2 * self.__y, p ) ) % p
		x3 = ( l * l - 2 * self.__x ) % p
		y3 = ( l * ( self.__x - x3 ) - self.__y ) % p
		return Point( self.__curve, x3, y3 )

	def x( self ):
		return self.__x

	def y( self ):
		return self.__y

	def curve( self ):
		return self.__curve

	def order( self ):
		return self.__order

INFINITY = Point( None, None, None )
secp256k1_curve = CurveFp( _p, _a, _b )
secp256k1_generator = Point( secp256k1_curve, _Gx, _Gy, _r )

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

class Signature( object ):
	def __init__( self, r, s ):
		self.r = r
		self.s = s

class Public_key( object ):
	def __init__( self, generator, point, c=None ):
		self.curve = generator.curve()
		self.generator = generator
		self.point = point
		self.compressed = c
		n = generator.order()
		if not n:
			raise RuntimeError("Generator point must have order.")
		if not n * point == INFINITY:
			raise RuntimeError("Generator point order is bad.")
		if point.x() < 0 or n <= point.x() or point.y() < 0 or n <= point.y():
			raise RuntimeError("Generator point has x or y out of range.")

	def verifies( self, hash, signature ):
		G = self.generator
		n = G.order()
		r = signature.r
		s = signature.s
		if r < 1 or r > n-1: return False
		if s < 1 or s > n-1: return False
		c = inverse_mod( s, n )
		u1 = ( hash * c ) % n
		u2 = ( r * c ) % n
		xy = u1 * G + u2 * self.point
		v = xy.x() % n
		return v == r

	def ser(self):
		if self.compressed:
			pk=('%02x'%(2+(self.point.y()&1))) + '%064x' % self.point.x()
		else:
			pk='04%064x%064x' % (self.point.x(), self.point.y())

		return binascii.unhexlify(pk)

	def get_addr(self, v=0):
		return public_key_to_bc_address(self.ser(), v)

	@classmethod
	def from_ser(cls, g, ser):
		if len(ser) == 33:
			return cls(g, Point(g.curve(), bytes_to_int(ser[1:]), y_odd = ordsix(ser[0]) == 3), ordsix(ser[0]) < 4)
		elif len(ser) == 65:
			return cls(g, Point(g.curve(), bytes_to_int(ser[1:33]), bytes_to_int(ser[33:])), ordsix(ser[0]) < 4)
		raise Exception("Bad public key format: %s"%repr(ser))

class Private_key( object ):
	def __init__( self, public_key, secret_multiplier ):
		self.public_key = public_key
		self.secret_multiplier = secret_multiplier

	def der( self ):
		hex_der_key = '06052b8104000a30740201010420' + \
			'%064x' % self.secret_multiplier + \
			'a00706052b8104000aa14403420004' + \
			'%064x' % self.public_key.point.x() + \
			'%064x' % self.public_key.point.y()
		return binascii.unhexlify(hex_der_key)

	def sign( self, hash, random_k ):
		G = self.public_key.generator
		n = G.order()
		k = random_k % n
		p1 = k * G
		r = p1.x()
		if r == 0: raise RuntimeError("amazingly unlucky random number r")
		s = ( inverse_mod( k, n ) * \
					( hash + ( self.secret_multiplier * r ) % n ) ) % n
		if s == 0: raise RuntimeError("amazingly unlucky random number s")
		return Signature( r, s )

class EC_KEY(object):
	def __init__( self, secret ):
		curve = CurveFp( _p, _a, _b )
		generator = Point( curve, _Gx, _Gy, _r )
		self.pubkey = Public_key( generator, generator * secret )
		self.privkey = Private_key( self.pubkey, secret )
		self.secret = secret

# end of python-ecdsa code

# pywallet openssl private key implementation

def i2d_ECPrivateKey(pkey, compressed=False):#, crypted=True):
	part3='a081a53081a2020101302c06072a8648ce3d0101022100'  # for uncompressed keys
	if compressed:
		if True:#not crypted:  ## Bitcoin accepts both part3's for crypted wallets...
			part3='a08185308182020101302c06072a8648ce3d0101022100'  # for compressed keys
		key = '3081d30201010420' + \
			'%064x' % pkey.secret + \
			part3 + \
			'%064x' % _p + \
			'3006040100040107042102' + \
			'%064x' % _Gx + \
			'022100' + \
			'%064x' % _r + \
			'020101a124032200'
	else:
		key = '308201130201010420' + \
			'%064x' % pkey.secret + \
			part3 + \
			'%064x' % _p + \
			'3006040100040107044104' + \
			'%064x' % _Gx + \
			'%064x' % _Gy + \
			'022100' + \
			'%064x' % _r + \
			'020101a144034200'

	return binascii.unhexlify(key) + i2o_ECPublicKey(pkey, compressed)

def i2o_ECPublicKey(pkey, compressed=False):
	# public keys are 65 bytes long (520 bits)
	# 0x04 + 32-byte X-coordinate + 32-byte Y-coordinate
	# 0x00 = point at infinity, 0x02 and 0x03 = compressed, 0x04 = uncompressed
	# compressed keys: <sign> <x> where <sign> is 0x02 if y is even and 0x03 if y is odd
	if compressed:
		if pkey.pubkey.point.y() & 1:
			key = '03' + '%064x' % pkey.pubkey.point.x()
		else:
			key = '02' + '%064x' % pkey.pubkey.point.x()
	else:
		key = '04' + \
			'%064x' % pkey.pubkey.point.x() + \
			'%064x' % pkey.pubkey.point.y()

	return binascii.unhexlify(key)

# bitcointools hashes and base58 implementation

def hash_160(public_key):
	md = hashlib.new('ripemd160')
	md.update(hashlib.sha256(public_key).digest())
	return md.digest()

def public_key_to_bc_address(public_key, v=None):
	if v==None:
		v=network.p2pkh_prefix
	h160 = hash_160(public_key)
	return hash_160_to_bc_address(h160, v)

def hash_160_to_bc_address(h160, v=None):
	if v==None:
		v=network.p2pkh_prefix
	vh160 = chrsix(v) + h160
	h = Hash(vh160)
	addr = vh160 + h[0:4]
	return b58encode(addr)

def bc_address_to_hash_160(addr):
	bytes = b58decode(addr, 25)
	return bytes[1:21]

__b58chars = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'

def b58encode(v, __b58chars=__b58chars):
	""" encode v, which is a string of bytes, to base58.
	"""
	__b58base = len(__b58chars)

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

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

	# Bitcoin does a little leading-zero-compression:
	# leading 0-bytes in the input become leading-1s
	nPad = 0
	for c in v:
		if chrsix(c) == b'\0': nPad += 1
		else: break

	return (__b58chars[0]*nPad) + result

def b58decode(v, length, __b58chars=__b58chars):
	""" decode v into a string of len bytes
	"""
	__b58base = len(__b58chars)
	long_value = 0
	for (i, c) in enumerate(v[::-1]):
		long_value += __b58chars.find(c) * (__b58base**i)

	result = b''
	while long_value >= 256:
		div, mod = divmod(long_value, 256)
		result = chrsix(mod) + result
		long_value = div
	result = chrsix(long_value) + result

	nPad = 0
	for c in v:
		if c == __b58chars[0]: nPad += 1
		else: break

	result = chrsix(0)*nPad + result
	if not(length is None) and len(result) != length:
		return None

	return result

# end of bitcointools base58 implementation

# address handling code

def Hash(data):
	return hashlib.sha256(hashlib.sha256(data).digest()).digest()

def EncodeBase58Check(secret, __b58chars=__b58chars):
	hash = Hash(secret)
	return b58encode(secret + hash[0:4], __b58chars)

def DecodeBase58Check(sec, __b58chars=__b58chars):
	vchRet = b58decode(sec, None, __b58chars)
	secret = vchRet[0:-4]
	csum = vchRet[-4:]
	hash = Hash(secret)
	cs32 = hash[0:4]
	if cs32 != csum:
		return None
	else:
		return secret

def str_to_long(b):
	res = 0
	pos = 1
	for a in reversed(b):
		res += ordsix(a) * pos
		pos *= 256
	return res

def PrivKeyToSecret(privkey):
	if len(privkey) == 279:
		return privkey[9:9+32]
	else:
		return privkey[8:8+32]

def SecretToASecret(secret, compressed=False):
	prefix = chrsix(network.wif_prefix)
	vchIn = prefix + secret
	if compressed: vchIn += b'\01'
	return EncodeBase58Check(vchIn)

def ASecretToSecret(sec):
	vch = DecodeBase58Check(sec)
	if not vch:
		return False
	if ordsix(vch[0]) != network.wif_prefix:
		print('Warning: adress prefix seems bad (%d vs %d)'%(ordsix(vch[0]), network.wif_prefix))
	return vch[1:]

def regenerate_key(sec):
	b = ASecretToSecret(sec)
	if not b:
		return False
	b = b[0:32]
	secret = int(b'0x' + binascii.hexlify(b), 16)
	return EC_KEY(secret)

def GetPubKey(pkey, compressed=False):
	return i2o_ECPublicKey(pkey, compressed)

def GetPrivKey(pkey, compressed=False):
	return i2d_ECPrivateKey(pkey, compressed)

def GetSecret(pkey):
	return binascii.unhexlify('%064x' % pkey.secret)

def is_compressed(sec):
	b = ASecretToSecret(sec)
	return len(b) == 33

# bitcointools wallet.dat handling code

def create_env(db_dir):
	db_env = DBEnv(0)
	r = db_env.open(db_dir, (DB_CREATE|DB_INIT_LOCK|DB_INIT_LOG|DB_INIT_MPOOL|DB_INIT_TXN|DB_THREAD|DB_RECOVER))
	return db_env

def parse_CAddress(vds):
	d = Bdict({'ip':'0.0.0.0','port':0,'nTime': 0})
	try:
		d['nVersion'] = vds.read_int32()
		d['nTime'] = vds.read_uint32()
		d['nServices'] = vds.read_uint64()
		d['pchReserved'] = vds.read_bytes(12)
		d['ip'] = socket.inet_ntoa(vds.read_bytes(4))
		d['port'] = vds.read_uint16()
	except:
		pass
	return d

def deserialize_CAddress(d):
	return d['ip']+":"+str(d['port'])

def parse_BlockLocator(vds):
	d = Bdict({ 'hashes' : [] })
	nHashes = vds.read_compact_size()
	for i in xrange(nHashes):
		d['hashes'].append(vds.read_bytes(32))
		return d

def deserialize_BlockLocator(d):
	result = "Block Locator top: " + binascii.hexlify(d['hashes'][0][::-1])
	return result

def parse_setting(setting, vds):
	if setting[0] == "f":	# flag (boolean) settings
		return str(vds.read_boolean())
	elif setting[0:4] == "addr": # CAddress
		d = parse_CAddress(vds)
		return deserialize_CAddress(d)
	elif setting == "nTransactionFee":
		return vds.read_int64()
	elif setting == "nLimitProcessors":
		return vds.read_int32()
	return 'unknown setting'

class SerializationError(Exception):
	""" Thrown when there's a problem deserializing or serializing """

def overlapped_read(f, sz, overlap, maxlen=None):
	buffer = b''
	stop = False
	total_read = 0
	while not stop and (not maxlen or maxlen > total_read):
		new_content = os.read(f, sz)
		if not new_content:break
		total_read += len(new_content)
		buffer = buffer[-overlap:] + new_content
		yield buffer

def search_patterns_on_disk(device, size, inc, patternlist):   # inc must be higher than 1k
	try:
		otype=os.O_RDONLY|os.O_BINARY
	except:
		otype=os.O_RDONLY
	try:
		fd = os.open(device, otype)
	except Exception as e:
		print("Can't open %s, check the path or try as root"%device)
		print("  Error: "+str(e.args))
		exit(0)

	i = 0
	data=b''

	tzero=time.time()
	sizetokeep=0
	BlocksToInspect=dict(map(lambda x:[x,[]], patternlist))
	lendataloaded=None
	writeProgressEvery=100*Mo
	while i < int(size) and (lendataloaded!=0 or lendataloaded==None):
		if int(i//writeProgressEvery)!=int((i+inc)//writeProgressEvery):
			print("%.2f Go read"%(i//1e9))
		try:
			datakept = data[-sizetokeep:]
			data = datakept + os.read(fd, inc)
			lendataloaded = len(data)-len(datakept)   #should be inc
			for text in patternlist:
				if text in data:
					BlocksToInspect[text].append([i-len(datakept), data, len(datakept)])
					pass
			sizetokeep=20   # 20 because all the patterns have a len<20. Could be higher.
			i += lendataloaded
		except Exception as exc:
			if lendataloaded%512>0:
				raise Exception("SPOD error 1: %d, %d"%(lendataloaded, i-len(datakept)))
			os.lseek(fd, lendataloaded, os.SEEK_CUR)
			print(str(exc))
			i += lendataloaded
			continue
	os.close(fd)

	AllOffsets=dict(map(lambda x:[repr(x),[]], patternlist))
	for text,blocks in BlocksToInspect.items():
		for offset,data,ldk in blocks:  #ldk = len(datakept)
			offsetslist=[offset+m.start() for m in re.finditer(text, data)]
			AllOffsets[repr(text)].extend(offsetslist)

	AllOffsets['PRFdevice']=device
	AllOffsets['PRFdt']=time.time()-tzero
	AllOffsets['PRFsize']=i
	return AllOffsets

def multiextract(s, ll):
	r=[]
	cursor=0
	for length in ll:
		r.append(s[cursor:cursor+length])
		cursor+=length
	if s[cursor:]!=b'':
		r.append(s[cursor:])
	return r

class RecovCkey(object):
	def __init__(self, epk, pk):
		self.encrypted_pk=epk
		self.public_key=pk
		self.mkey=None
		self.privkey=None


class RecovMkey(object):
	def __init__(self, ekey, salt, nditer, ndmethod, nid):
		self.encrypted_key=ekey
		self.salt=salt
		self.iterations=nditer
		self.method=ndmethod
		self.id=nid
		# print((ekey, salt, nditer, ndmethod, nid))

def readpartfile(fd, offset, length):   #make everything 512*n because of windows...
	rest=offset%512
	new_offset=offset-rest
	big_length=512*(int((length+rest-1)//512)+1)
	os.lseek(fd, new_offset, os.SEEK_SET)
	d=os.read(fd, big_length)
	return d[rest:rest+length]

def recov_ckey(fd, offset):
	d=readpartfile(fd, offset-49, 122)
	me=multiextract(d, [1,48,4,4,1])

	checks=[]
	checks.append([0, '30'])
	checks.append([3, '636b6579'])
	if sum(map(lambda x:int(me[x[0]] != binascii.unhexlify(x[1])), checks)):  #number of false statements
		return None

	return me

def recov_mkey(fd, offset):
	d=readpartfile(fd, offset-72, 84)
	me=multiextract(d, [4,48,1,8,4,4,1,2,8,4])

	checks=[]
	checks.append([0, '43000130'])
	checks.append([2, '08'])
	checks.append([6, '00'])
	checks.append([8, '090001046d6b6579'])
	if sum(map(lambda x:int(me[x[0]] != binascii.unhexlify(x[1])), checks)):  #number of false statements
		return None

	return me

def drop_first(e):
	if hasattr(e, 'next'):
		e.next()
	else:
		e=e[1:]
	for i in e:yield i

def recov_uckey(fd, offset):
	dd = readpartfile(fd, offset, 223)
	r = []
	for beg in map(binascii.unhexlify, ['3081d30201010420', '308201130201010420']):
		for chunk in drop_first(dd.split(beg)):
			r.append(chunk[:32])
	return r and (None, None, None, None, r[0])

def recov_uckeyOLD(fd, offset):
	checks=[]

	d=readpartfile(fd, offset-217, 223)
	if d[-7]=='\x26':
		me=multiextract(d, [2,1,4,1,32,141,33,2,1,6])

		checks.append([0, '3081'])
		checks.append([2, '02010104'])
	elif d[-7]=='\x46':
		d=readpartfile(fd, offset-282, 286)

		me=multiextract(d, [2,1,4,1,32,173,65,1,2,5])

		checks.append([0, '8201'])
		checks.append([2, '02010104'])
		checks.append([-1, '460001036b'])
	else:
		return None


	if sum(map(lambda x:int(me[x[0]] != binascii.unhexlify(x[1])), checks)):  #number of false statements
		return None

	return me

def recov(device, passes, size=102400, inc=10240, outputdir='.'):
	if inc%512>0:
		inc-=inc%512   #inc must be 512*n on Windows... Don't ask me why...

	nameToDBName={
		'mkey':b'\x09\x00\x01\x04mkey',
		'ckey':b'\x27\x00\x01\x04ckey',
		'key':b'\x00\x01\x03key'
	}


	if not device.startswith('PartialRecoveryFile:'):
		r=search_patterns_on_disk(device, size, inc, nameToDBName.values())
		f=open(outputdir+'/pywallet_partial_recovery_%d.json'%ts(), 'w')
		f.write(json.dumps(r))
		f.close()
		print("\nRead %.1f Go in %.1f minutes\n"%(r['PRFsize']//1e9, r['PRFdt']//60.0))
	else:
		prf=device[20:]
		f=open(prf, 'r')
		content = f.read()
		f.close()
		r=json.loads(content)
		device=r['PRFdevice']
		print("\nLoaded %.1f Go from %s\n"%(r['PRFsize']//1e9, device))


	try:
		otype=os.O_RDONLY|os.O_BINARY
	except:
		otype=os.O_RDONLY
	fd = os.open(device, otype)


	mkeys=[]
	crypters=[]
	for offset in r[repr(nameToDBName['mkey'])]:
		s=recov_mkey(fd, offset)
		if s==None:
			continue
		if s[-1] == b'':s=s[:-1]
		newmkey=RecovMkey(
					s[1],
					s[3],
					int(binascii.hexlify(s[5][::-1]), 16),
					int(binascii.hexlify(s[4][::-1]), 16),
					int(binascii.hexlify(s[-1][::-1]), 16)
				)
		mkeys.append([offset,newmkey])

	print("Found %d possible wallets"%len(mkeys))




	ckeys=[]
	for offset in r[repr(nameToDBName['ckey'])]:
		s=recov_ckey(fd, offset)
		if s==None:
			continue
		newckey=RecovCkey(s[1], s[5][:int(binascii.hexlify(s[4]),16)])
		ckeys.append([offset,newckey])
	print('Found %d possible encrypted keys'%len(ckeys))


	uckeys=[]
	for offset in r[repr(nameToDBName['key'])]:
		s=recov_uckey(fd, offset)
		if s:
			uckeys.append(s[4])
	uckeys = list(set(uckeys))
	print('Found %d possible unencrypted keys'%len(uckeys))


	os.close(fd)


	list_of_possible_keys_per_master_key=dict(map(lambda x:[x[1],[]], mkeys))
	for cko,ck in ckeys:
		tl=map(lambda x:[abs(x[0]-cko)]+x, mkeys)
		tl=sorted(tl, key=lambda x:x[0])
		list_of_possible_keys_per_master_key[tl[0][2]].append(ck)

	cpt=0
	mki=1
	tzero=time.time()
	if len(passes)==0:
		if len(ckeys)>0:
			print("Can't decrypt them as you didn't provide any passphrase.")
	else:
		for mko,mk in mkeys:
			list_of_possible_keys=list_of_possible_keys_per_master_key[mk]
			sys.stdout.write( "\nPossible wallet #"+str(mki))
			sys.stdout.flush()
			for ppi,pp in enumerate(passes):
				sys.stdout.write( "\n    with passphrase #"+str(ppi+1)+"  ")
				sys.stdout.flush()
				failures_in_a_row=0
#				print("SKFP params:", pp, mk.salt, mk.iterations, mk.method)
				res = crypter.SetKeyFromPassphrase(pp, mk.salt, mk.iterations, mk.method)
				if res == 0:
					print("Unsupported derivation method")
					sys.exit(1)
				masterkey = crypter.Decrypt(mk.encrypted_key)
				crypter.SetKey(masterkey)
				for ck in list_of_possible_keys:
					if cpt%10==9 and failures_in_a_row==0:
						sys.stdout.write('.')
						sys.stdout.flush()
					if failures_in_a_row>5:
						break
					crypter.SetIV(Hash(ck.public_key))
					secret = crypter.Decrypt(ck.encrypted_pk)
					compressed = ck.public_key[0] != '\04'


					pkey = EC_KEY(int(b'0x' + binascii.hexlify(secret), 16))
					if ck.public_key != GetPubKey(pkey, compressed):
						failures_in_a_row+=1
					else:
						failures_in_a_row=0
						ck.mkey=mk
						ck.privkey=secret
					cpt+=1
			mki+=1
		print("\n")
		tone=time.time()
		try:
			calcspeed=1.0*cpt//(tone-tzero)*60  #calc/min
		except:
			calcspeed=1.0
		if calcspeed==0:
			calcspeed=1.0

		ckeys_not_decrypted=list(filter(lambda x:x[1].privkey==None, ckeys))
		refused_to_test_all_pps=True
		if len(ckeys_not_decrypted)==0:
			print("All the found encrypted private keys have been decrypted.")
			return map(lambda x:x[1].privkey, ckeys)
		else:
			print("Private keys not decrypted: %d"%len(ckeys_not_decrypted))
			print("Trying all the remaining possibilities (%d) might take up to %d minutes."%(len(ckeys_not_decrypted)*len(passes)*len(mkeys),int(len(ckeys_not_decrypted)*len(passes)*len(mkeys)//calcspeed)))
			cont=raw_input("Do you want to test them? (y/n): ")
			while len(cont)==0:
				cont=raw_input("Do you want to test them? (y/n): ")
				if cont[0]=='y':
					refused_to_test_all_pps=False
					cpt=0
					for dist,mko,mk in tl:
						for ppi,pp in enumerate(passes):
							res = crypter.SetKeyFromPassphrase(pp, mk.salt, mk.iterations, mk.method)
							if res == 0:
								logging.error("Unsupported derivation method")
								sys.exit(1)
							masterkey = crypter.Decrypt(mk.encrypted_key)
							crypter.SetKey(masterkey)
							for cko,ck in ckeys_not_decrypted:
								tl=map(lambda x:[abs(x[0]-cko)]+x, mkeys)
								tl=sorted(tl, key=lambda x:x[0])
								if mk==tl[0][2]:
									continue         #because already tested
								crypter.SetIV(Hash(ck.public_key))
								secret = crypter.Decrypt(ck.encrypted_pk)
								compressed = ck.public_key[0] != '\04'


								pkey = EC_KEY(int(b'0x' + binascii.hexlify(secret), 16))
								if ck.public_key == GetPubKey(pkey, compressed):
									ck.mkey=mk
									ck.privkey=secret
								cpt+=1

		print("")
		ckeys_not_decrypted=filter(lambda x:x[1].privkey==None, ckeys)
		if len(ckeys_not_decrypted)==0:
			print("All the found encrypted private keys have been finally decrypted.")
		elif not refused_to_test_all_pps:
			print("Private keys not decrypted: %d"%len(ckeys_not_decrypted))
			print("Try another password, check the size of your partition or seek help")


	uncrypted_ckeys=filter(lambda x:x!=None, map(lambda x:x[1].privkey, ckeys))
	uckeys.extend(uncrypted_ckeys)

	return uckeys




def ts():
	return int(time.mktime(datetime.now().timetuple()))

def check_postkeys(key, postkeys):
	for i in postkeys:
		if key[:len(i)] == i:
			return True
	return False

def one_element_in(a, string):
	for i in a:
		if i in string:
			return True
	return False

def first_read(device, size, prekeys, inc=10000):
	t0 = ts()-1
	try:
		fd = os.open (device, os.O_RDONLY)
	except:
		print("Can't open %s, check the path or try as root"%device)
		exit(0)
	prekey = prekeys[0]
	data = b""
	i = 0
	data = os.read (fd, i)
	before_contained_key = False
	contains_key = False
	ranges = []

	while i < int(size):
		if i%(10*Mio) > 0 and i%(10*Mio) <= inc:
			print("\n%.2f/%.2f Go"%(i//1e9, size//1e9))
			t = ts()
			speed = i//(t-t0)
			ETAts = size//speed + t0
			d = datetime.fromtimestamp(ETAts)
			print(d.strftime("   ETA: %H:%M:%S"))

		try:
			data = os.read (fd, inc)
		except Exception as exc:
			os.lseek(fd, inc, os.SEEK_CUR)
			print(str(exc))
			i += inc
			continue

		contains_key = one_element_in(prekeys, data)

		if not before_contained_key and contains_key:
			ranges.append(i)

		if before_contained_key and not contains_key:
			ranges.append(i)

		before_contained_key = contains_key

		i += inc

	os.close (fd)
	return ranges

def shrink_intervals(device, ranges, prekeys, inc=1000):
	prekey = prekeys[0]
	nranges = []
	fd = os.open (device, os.O_RDONLY)
	for j in range(len(ranges)//2):
		before_contained_key = False
		contains_key = False
		bi = ranges[2*j]
		bf = ranges[2*j+1]

		mini_blocks = []
		k = bi
		while k <= bf + len(prekey) + 1:
			mini_blocks.append(k)
			k += inc
			mini_blocks.append(k)

		for k in range(len(mini_blocks)//2):
			mini_blocks[2*k] -= len(prekey) +1
			mini_blocks[2*k+1] += len(prekey) +1


			bi = mini_blocks[2*k]
			bf = mini_blocks[2*k+1]

			os.lseek(fd, bi, 0)

			data = os.read(fd, bf-bi+1)
			contains_key = one_element_in(prekeys, data)

			if not before_contained_key and contains_key:
				nranges.append(bi)

			if before_contained_key and not contains_key:
				nranges.append(bi+len(prekey) +1+len(prekey) +1)

			before_contained_key = contains_key

	os.close (fd)

	return nranges

def find_offsets(device, ranges, prekeys):
	prekey = prekeys[0]
	list_offsets = []
	to_read = 0
	fd = os.open (device, os.O_RDONLY)
	for i in range(len(ranges)//2):
		bi = ranges[2*i]-len(prekey)-1
		os.lseek(fd, bi, 0)
		bf = ranges[2*i+1]+len(prekey)+1
		to_read += bf-bi+1
		buf = b""
		for j in range(len(prekey)):
			buf += b"\x00"
		curs = bi

		while curs <= bf:
			data = os.read(fd, 1)
			buf = buf[1:] + data
			if buf in prekeys:
				list_offsets.append(curs)
			curs += 1

	os.close (fd)

	return [to_read, list_offsets]

def read_keys(device, list_offsets):
	found_hexkeys = []
	fd = os.open (device, os.O_RDONLY)
	for offset in list_offsets:
		os.lseek(fd, offset+1, 0)
		data = os.read(fd, 40)
		hexkey = binascii.hexlify(data[1:33])
		after_key = binascii.hexlify(data[33:39])
		if hexkey not in found_hexkeys and check_postkeys(binascii.unhexlify(after_key), postkeys):
			found_hexkeys.append(hexkey)

	os.close (fd)

	return found_hexkeys

def read_device_size(size):
	n, prefix, bi = re.match(r'(\d+)(|k|M|G|T|P)(i?)[oB]?$', size).groups()
	r = int(int(n) * pow(1000+int(bool(bi))*24, 'zkMGTP'.index(prefix or 'z')))
	return r

def md5_2(a):
	return hashlib.md5(a).digest()

def md5_file(nf):
	try:
		fichier = file(nf, 'r').read()
		return md5_2(fichier)
	except:
		return 'zz'

def md5_onlinefile(add):
	page = urllib.urlopen(add).read()
	return md5_2(page)


class KEY:
	def __init__ (self):
		self.prikey = None
		self.pubkey = None

	def generate (self, secret=None):
		if secret:
			exp = int (b'0x' + binascii.hexlify(secret), 16)
			self.prikey = ecdsa.SigningKey.from_secret_exponent (exp, curve=secp256k1)
		else:
			self.prikey = ecdsa.SigningKey.generate (curve=secp256k1)
		self.pubkey = self.prikey.get_verifying_key()
		return self.prikey.to_der()

	def set_privkey (self, key):
		if len(key) == 279:
			seq1, rest = der.remove_sequence (key)
			integer, rest = der.remove_integer (seq1)
			octet_str, rest = der.remove_octet_string (rest)
			tag1, cons1, rest, = der.remove_constructed (rest)
			tag2, cons2, rest, = der.remove_constructed (rest)
			point_str, rest = der.remove_bitstring (cons2)
			self.prikey = ecdsa.SigningKey.from_string(octet_str, curve=secp256k1)
		else:
			self.prikey = ecdsa.SigningKey.from_der (key)

	def set_pubkey (self, key):
		key = key[1:]
		self.pubkey = ecdsa.VerifyingKey.from_string (key, curve=secp256k1)

	def get_privkey (self):
		_p = self.prikey.curve.curve.p ()
		_r = self.prikey.curve.generator.order ()
		_Gx = self.prikey.curve.generator.x ()
		_Gy = self.prikey.curve.generator.y ()
		encoded_oid2 = der.encode_oid (*(1, 2, 840, 10045, 1, 1))
		encoded_gxgy = binascii.unhexlify("04" + ("%64x" % _Gx) + ("%64x" % _Gy))
		param_sequence = der.encode_sequence (
			ecdsa.der.encode_integer(1),
				der.encode_sequence (
				encoded_oid2,
				der.encode_integer (_p),
			),
			der.encode_sequence (
				der.encode_octet_string("\x00"),
				der.encode_octet_string("\x07"),
			),
			der.encode_octet_string (encoded_gxgy),
			der.encode_integer (_r),
			der.encode_integer (1),
		);
		encoded_vk = "\x00\x04" + self.pubkey.to_string ()
		return der.encode_sequence (
			der.encode_integer (1),
			der.encode_octet_string (self.prikey.to_string ()),
			der.encode_constructed (0, param_sequence),
			der.encode_constructed (1, der.encode_bitstring (encoded_vk)),
		)

	def get_pubkey (self):
		return "\x04" + self.pubkey.to_string()

	def sign (self, hash):
		sig = self.prikey.sign_digest (hash, sigencode=ecdsa.util.sigencode_der)
		return binascii.hexlify(sig)

	def verify (self, hash, sig):
		return self.pubkey.verify_digest (sig, hash, sigdecode=ecdsa.util.sigdecode_der)

class BCDataStream(object):
	def __init__(self):
		self.input = None
		self.read_cursor = 0

	def clear(self):
		self.input = None
		self.read_cursor = 0

	def write(self, bytes):	# Initialize with string of bytes
		if self.input is None:
			self.input = bytes
		else:
			self.input += bytes

	def map_file(self, file, start):	# Initialize with bytes from file
		self.input = mmap.mmap(file.fileno(), 0, access=mmap.ACCESS_READ)
		self.read_cursor = start
	def seek_file(self, position):
		self.read_cursor = position
	def close_file(self):
		self.input.close()

	def read_string(self):
		# Strings are encoded depending on length:
		# 0 to 252 :	1-byte-length followed by bytes (if any)
		# 253 to 65,535 : byte'253' 2-byte-length followed by bytes
		# 65,536 to 4,294,967,295 : byte '254' 4-byte-length followed by bytes
		# ... and the Bitcoin client is coded to understand:
		# greater than 4,294,967,295 : byte '255' 8-byte-length followed by bytes of string
		# ... but I don't think it actually handles any strings that big.
		if self.input is None:
			raise SerializationError("call write(bytes) before trying to deserialize")

		try:
			length = self.read_compact_size()
		except IndexError:
			raise SerializationError("attempt to read past end of buffer")

		return self.read_bytes(length)

	def write_string(self, string):
		# Length-encoded as with read-string
		self.write_compact_size(len(string))
		self.write(string)

	def read_bytes(self, length):
		try:
			result = self.input[self.read_cursor:self.read_cursor+length]
			self.read_cursor += length
			return result
		except IndexError:
			raise SerializationError("attempt to read past end of buffer")

		return b''

	def read_boolean(self): return self.read_bytes(1)[0] != chrsix(0)
	def read_int16(self): return self._read_num('<h')
	def read_uint16(self): return self._read_num('<H')
	def read_int32(self): return self._read_num('<i')
	def read_uint32(self): return self._read_num('<I')
	def read_int64(self): return self._read_num('<q')
	def read_uint64(self): return self._read_num('<Q')

	def write_boolean(self, val): return self.write(chrsix(int(val)))
	def write_int16(self, val): return self._write_num('<h', val)
	def write_uint16(self, val): return self._write_num('<H', val)
	def write_int32(self, val): return self._write_num('<i', val)
	def write_uint32(self, val): return self._write_num('<I', val)
	def write_int64(self, val): return self._write_num('<q', val)
	def write_uint64(self, val): return self._write_num('<Q', val)

	def read_compact_size(self):
		size = ordsix(self.input[self.read_cursor])
		self.read_cursor += 1
		if size == 253:
			size = self._read_num('<H')
		elif size == 254:
			size = self._read_num('<I')
		elif size == 255:
			size = self._read_num('<Q')
		return size

	def write_compact_size(self, size):
		if size < 0:
			raise SerializationError("attempt to write size < 0")
		elif size < 253:
			 self.write(chrsix(size))
		elif size < 2**16:
			self.write('\xfd')
			self._write_num('<H', size)
		elif size < 2**32:
			self.write('\xfe')
			self._write_num('<I', size)
		elif size < 2**64:
			self.write('\xff')
			self._write_num('<Q', size)

	def _read_num(self, format):
		(i,) = struct.unpack_from(format, self.input, self.read_cursor)
		self.read_cursor += struct.calcsize(format)
		return i

	def _write_num(self, format, num):
		s = struct.pack(format, num)
		self.write(s)

def open_wallet(db_env, walletfile, writable=False):
	db = DB(db_env)
	if writable:
		DB_TYPEOPEN = DB_CREATE
	else:
		DB_TYPEOPEN = DB_RDONLY
	flags = DB_THREAD | DB_TYPEOPEN
	try:
		r = db.open(walletfile, "main", DB_BTREE, flags)
	except DBError as e:
		print(e)
		r = True

	if not(r is None):
		logging.error("Couldn't open wallet.dat/main. Try quitting Bitcoin and running this again.")
		sys.exit(1)

	return db

def parse_wallet(db, item_callback):
	kds = BCDataStream()
	vds = BCDataStream()


	def parse_TxIn(vds):
		d = Bdict({})
		d['prevout_hash'] = binascii.hexlify(vds.read_bytes(32))
		d['prevout_n'] = vds.read_uint32()
		d['scriptSig'] = binascii.hexlify(vds.read_bytes(vds.read_compact_size()))
		d['sequence'] = vds.read_uint32()
		return d


	def parse_TxOut(vds):
		d = Bdict({})
		d['value'] = vds.read_int64()//1e8
		d['scriptPubKey'] = binascii.hexlify(vds.read_bytes(vds.read_compact_size()))
		return d


	for (key, value) in db.items():
		d = Bdict({})

		kds.clear(); kds.write(key)
		vds.clear(); vds.write(value)

		type = kds.read_string()

		d["__key__"] = key
		d["__value__"] = value
		d["__type__"] = type

		try:
			if type == b"tx":
				d["tx_id"] = binascii.hexlify(kds.read_bytes(32)[::-1])
				start = vds.read_cursor
				d['version'] = vds.read_int32()
				n_vin = vds.read_compact_size()
				d['txIn'] = []
				for i in xrange(n_vin):
					d['txIn'].append(parse_TxIn(vds))
				n_vout = vds.read_compact_size()
				d['txOut'] = []
				for i in xrange(n_vout):
					d['txOut'].append(parse_TxOut(vds))
				d['lockTime'] = vds.read_uint32()
				d['tx'] = binascii.hexlify(vds.input[start:vds.read_cursor])
				d['txv'] = binascii.hexlify(value)
				d['txk'] = binascii.hexlify(key)
			elif type == b"name":
				d['hash'] = kds.read_string()
				d['name'] = vds.read_string()
			elif type == b"version":
				d['version'] = vds.read_uint32()
			elif type == b"minversion":
				d['minversion'] = vds.read_uint32()
			elif type == b"setting":
				d['setting'] = kds.read_string()
				d['value'] = parse_setting(d['setting'], vds)
			elif type == b"key":
				d['public_key'] = kds.read_bytes(kds.read_compact_size())
				d['private_key'] = vds.read_bytes(vds.read_compact_size())
			elif type == b"wkey":
				d['public_key'] = kds.read_bytes(kds.read_compact_size())
				d['private_key'] = vds.read_bytes(vds.read_compact_size())
				d['created'] = vds.read_int64()
				d['expires'] = vds.read_int64()
				d['comment'] = vds.read_string()
			elif type == b"defaultkey":
				d['key'] = vds.read_bytes(vds.read_compact_size())
			elif type == b"pool":
				d['n'] = kds.read_int64()
				d['nVersion'] = vds.read_int32()
				d['nTime'] = vds.read_int64()
				d['public_key'] = vds.read_bytes(vds.read_compact_size())
			elif type == b"acc":
				d['account'] = kds.read_string()
				d['nVersion'] = vds.read_int32()
				d['public_key'] = vds.read_bytes(vds.read_compact_size())
			elif type == b"acentry":
				d['account'] = kds.read_string()
				d['n'] = kds.read_uint64()
				d['nVersion'] = vds.read_int32()
				d['nCreditDebit'] = vds.read_int64()
				d['nTime'] = vds.read_int64()
				d['otherAccount'] = vds.read_string()
				d['comment'] = vds.read_string()
			# elif type == b"bestblock":
			# 	d['nVersion'] = vds.read_int32()
			# 	d.update(parse_BlockLocator(vds))
			elif type == b"ckey":
				d['public_key'] = kds.read_bytes(kds.read_compact_size())
				d['encrypted_private_key'] = vds.read_bytes(vds.read_compact_size())
			elif type == b"mkey":
				d['nID'] = kds.read_uint32()
				d['encrypted_key'] = vds.read_string()
				d['salt'] = vds.read_string()
				d['nDerivationMethod'] = vds.read_uint32()
				d['nDerivationIterations'] = vds.read_uint32()
				d['otherParams'] = vds.read_string()

			item_callback(type, d)

		except Exception as e:
			traceback.print_exc()
			print("ERROR parsing wallet.dat, type %s" % type)
			print("key data: %s"%key)
			print("key data in hex: %s"%binascii.hexlify(key))
			print("value data in hex: %s"%binascii.hexlify(value))
			sys.exit(1)

def delete_from_wallet(db_env, walletfile, typedel, kd):
	db = open_wallet(db_env, walletfile, True)
	kds = BCDataStream()
	vds = BCDataStream()

	deleted_items = 0

	if not isinstance(kd, list):
		kd=[kd]

	if typedel=='tx' and kd!=['all']:
		for keydel in kd:
			db.delete('\x02\x74\x78'+binascii.unhexlify(keydel)[::-1])
			deleted_items+=1

	else:
		for i,keydel in enumerate(kd):
			for (key, value) in db.items():
				kds.clear(); kds.write(key)
				vds.clear(); vds.write(value)
				type = kds.read_string()

				if typedel == "tx" and type == b"tx":
					db.delete(key)
					deleted_items+=1
				elif typedel == "key":
					if type == b"key" or type == b"ckey":
						if keydel == public_key_to_bc_address(kds.read_bytes(kds.read_compact_size())):
							db.delete(key)
							deleted_items+=1
					elif type == b"pool":
						vds.read_int32()
						vds.read_int64()
						if keydel == public_key_to_bc_address(vds.read_bytes(vds.read_compact_size())):
							db.delete(key)
							deleted_items+=1
					elif type == b"name":
						if keydel == kds.read_string():
							db.delete(key)
							deleted_items+=1


	db.close()
	return deleted_items

def merge_keys_lists(la, lb):
	lr=Bdict({})
	llr=[]
	for k in la:
		lr[k[0]]=k[1]

	for k in lb:
		if k[0] in lr.keys():
			lr[k[0]]=lr[k[0]]+" / "+k[1]
		else:
			lr[k[0]]=k[1]

	for k,j in lr.items():
		llr.append([k,j])

	return llr

def merge_wallets(wadir, wa, wbdir, wb, wrdir, wr, passphrase_a, passphrase_b, passphrase_r):
	global passphrase
	passphrase_LAST=passphrase

	#Read Wallet 1
	passphrase=passphrase_a
	dba_env = create_env(wadir)
	crypted_a = read_wallet(json_db, dba_env, wa, True, True, "", None)['crypted']

	list_keys_a=[]
	for i in json_db['keys']:
		try:
			label=i['label']
		except:
			label="#Reserve"
		try:
			list_keys_a.append([i['secret'], label])
		except:
			pass

	if len(list_keys_a)==0:
		return [False, "Something went wrong with the first wallet."]


	#Read Wallet 2
	passphrase=passphrase_b
	dbb_env = create_env(wbdir)
	crypted_b = read_wallet(json_db, dbb_env, wb, True, True, "", None)['crypted']

	list_keys_b=[]
	for i in json_db['keys']:
		try:
			label=i['label']
		except:
			label="#Reserve"
		try:
			list_keys_b.append([i['secret'], label])
		except:
			pass
	if len(list_keys_b)==0:
		return [False, "Something went wrong with the second wallet."]

	m=merge_keys_lists(list_keys_a,list_keys_b)


	#Create new wallet
	dbr_env = create_env(wrdir)
	create_new_wallet(dbr_env, wr, 80100)

	dbr = open_wallet(dbr_env, wr, True)
	update_wallet(dbr, 'minversion', { 'minversion' : 60000})


	if len(passphrase_r)>0:
		NPP_salt=os.urandom(8)
		NPP_rounds=int(50000+random.random()*20000)
		NPP_method=0
		NPP_MK=os.urandom(32)

		crypter.SetKeyFromPassphrase(passphrase_r, NPP_salt, NPP_rounds, NPP_method)
		NPP_EMK = crypter.Encrypt(NPP_MK)

		update_wallet(dbr, 'mkey', {
			'encrypted_key': NPP_EMK,
			'nDerivationIterations' : NPP_rounds,
			'nDerivationMethod' : NPP_method,
			'nID' : 1,
			'otherParams' : b'',
			'salt': NPP_salt
		})


	dbr.close()

	t='\n'.join(map(lambda x:';'.join(x), m))
	passphrase=passphrase_r

	global global_merging_message

	global_merging_message=["Merging...","Merging..."]
	thread.start_new_thread(import_csv_keys, ("\x00"+t, wrdir, wr,))
	t=""

	passphrase=passphrase_LAST

	return [True]

def random_string(l, alph="0123456789abcdef"):
	r=""
	la=len(alph)
	for i in range(l):
		r+=alph[int(la*(random.random()))]
	return r

def update_wallet(db, types, datas, paramsAreLists=False):
	"""Write a single item to the wallet.
	db must be open with writable=True.
	type and data are the type code and data dictionary as parse_wallet would
	give to item_callback.
	data's __key__, __value__ and __type__ are ignored; only the primary data
	fields are used.
	"""

	if not paramsAreLists:
		types=[types]
		datas=[datas]

	if len(types)!=len(datas):
		raise Exception("UpdateWallet: sizes are different")

	for it,type in enumerate(types):
		type = str_to_bytes(type)
		data=datas[it]

		d = data
		kds = BCDataStream()
		vds = BCDataStream()

		# Write the type code to the key
		kds.write_string(type)
		vds.write(b"")						 # Ensure there is something

		try:
			if type == b"tx":
	#			raise NotImplementedError("Writing items of type 'tx'")
				kds.write(binascii.unhexlify(d['txi'][6:]))
				vds.write(binascii.unhexlify(d['txv']))
			elif type == b"name":
				kds.write_string(d['hash'])
				vds.write_string(d['name'])
			elif type == b"version":
				vds.write_uint32(d['version'])
			elif type == b"minversion":
				vds.write_uint32(d['minversion'])
			elif type == b"setting":
				raise NotImplementedError("Writing items of type 'setting'")
				kds.write_string(d['setting'])
				#d['value'] = parse_setting(d['setting'], vds)
			elif type == b"key":
				kds.write_string(d['public_key'])
				vds.write_string(d['private_key'])
			elif type == b"wkey":
				kds.write_string(d['public_key'])
				vds.write_string(d['private_key'])
				vds.write_int64(d['created'])
				vds.write_int64(d['expires'])
				vds.write_string(d['comment'])
			elif type == b"defaultkey":
				vds.write_string(d['key'])
			elif type == b"pool":
				kds.write_int64(d['n'])
				vds.write_int32(d['nVersion'])
				vds.write_int64(d['nTime'])
				vds.write_string(d['public_key'])
			elif type == b"acc":
				kds.write_string(d['account'])
				vds.write_int32(d['nVersion'])
				vds.write_string(d['public_key'])
			elif type == b"acentry":
				kds.write_string(d['account'])
				kds.write_uint64(d['n'])
				vds.write_int32(d['nVersion'])
				vds.write_int64(d['nCreditDebit'])
				vds.write_int64(d['nTime'])
				vds.write_string(d['otherAccount'])
				vds.write_string(d['comment'])
			# elif type == b"bestblock":
			# 	vds.write_int32(d['nVersion'])
			# 	vds.write_compact_size(len(d['hashes']))
			# 	for h in d['hashes']:
			# 		vds.write(h)
			elif type == b"ckey":
				kds.write_string(d['public_key'])
				vds.write_string(d['encrypted_private_key'])
			elif type == b"mkey":
				kds.write_uint32(d['nID'])
				vds.write_string(d['encrypted_key'])
				vds.write_string(d['salt'])
				vds.write_uint32(d['nDerivationMethod'])
				vds.write_uint32(d['nDerivationIterations'])
				vds.write_string(d['otherParams'])

			else:
				print("Unknown key type: %s"%type)

			# Write the key/value pair to the database
			db.put(kds.input, vds.input)

		except Exception as e:
			print("ERROR writing to wallet.dat, type %s"%type)
			print("data dictionary: %r"%data)
			traceback.print_exc()

def create_new_wallet(db_env, walletfile, version):
	db_out = DB(db_env)

	try:
		r = db_out.open(walletfile, "main", DB_BTREE, DB_CREATE)
	except DBError:
		r = True

	if not(r is None):
		logging.error("Couldn't open %s."%walletfile)
		sys.exit(1)

	db_out.put(binascii.unhexlify("0776657273696f6e"), binascii.unhexlify("%08x"%version)[::-1])

	db_out.close()


def rewrite_wallet(db_env, walletfile, destFileName, pre_put_callback=None):
	db = open_wallet(db_env, walletfile)

	db_out = DB(db_env)
	try:
		r = db_out.open(destFileName, "main", DB_BTREE, DB_CREATE)
	except DBError:
		r = True

	if not(r is None):
		logging.error("Couldn't open %s."%destFileName)
		sys.exit(1)

	def item_callback(type, d):
		if (pre_put_callback is None or pre_put_callback(type, d)):
			db_out.put(d["__key__"], d["__value__"])

	parse_wallet(db, item_callback)
	db_out.close()
	db.close()

# end of bitcointools wallet.dat handling code

# wallet.dat reader / writer

addr_to_keys={}
def read_wallet(json_db, db_env, walletfile, print_wallet, print_wallet_transactions, transaction_filter, include_balance, FillPool=False):
	global passphrase, addr_to_keys
	crypted=False

	private_keys = []
	private_hex_keys = []

	db = open_wallet(db_env, walletfile, writable=FillPool)

	json_db['keys'] = []
	json_db['pool'] = []
	json_db['tx'] = []
	json_db['names'] = Bdict({})
	json_db['ckey'] = []
	json_db['mkey'] = Bdict({})

	def item_callback(type, d):
		if type == b"tx":
			json_db['tx'].append({"tx_id" : d['tx_id'], "txin" : d['txIn'], "txout" : d['txOut'], "tx_v" : d['txv'], "tx_k" : d['txk']})

		elif type == b"name":
			json_db['names'][d['hash']] = d['name']

		elif type == b"version":
			json_db['version'] = d['version']

		elif type == b"minversion":
			json_db['minversion'] = d['minversion']

		elif type == b"setting":
			if not json_db.has_key('settings'):
				json_db['settings'] = Bdict({})
			json_db["settings"][d['setting']] = d['value']

		elif type == b"defaultkey":
			json_db['defaultkey'] = public_key_to_bc_address(d['key'])

		elif type == b"key":
			addr = public_key_to_bc_address(d['public_key'])
			compressed = d['public_key'][0] != '\04'
			sec = SecretToASecret(PrivKeyToSecret(d['private_key']), compressed)
			hexsec = binascii.hexlify(ASecretToSecret(sec)[:32])
			private_keys.append(sec)
			addr_to_keys[addr]=[hexsec, binascii.hexlify(d['public_key'])]
			json_db['keys'].append({'addr' : addr, 'sec' : sec, 'hexsec' : hexsec, 'secret' : hexsec, 'pubkey':binascii.hexlify(d['public_key']), 'compressed':compressed, 'private':binascii.hexlify(d['private_key'])})

		elif type == b"wkey":
			if not json_db.has_key('wkey'): json_db['wkey'] = []
			json_db['wkey']['created'] = d['created']

		elif type == b"pool":
			"""	d['n'] = kds.read_int64()
				d['nVersion'] = vds.read_int32()
				d['nTime'] = vds.read_int64()
				d['public_key'] = vds.read_bytes(vds.read_compact_size())"""
			try:
				json_db['pool'].append( {'n': d['n'], 'addr': public_key_to_bc_address(d['public_key']), 'addr2': public_key_to_bc_address(binascii.unhexlify(d['public_key'])), 'addr3': public_key_to_bc_address(binascii.hexlify(d['public_key'])), 'nTime' : d['nTime'], 'nVersion' : d['nVersion'], 'public_key_hex' : d['public_key'] } )
			except:
				json_db['pool'].append( {'n': d['n'], 'addr': public_key_to_bc_address(d['public_key']), 'nTime' : d['nTime'], 'nVersion' : d['nVersion'], 'public_key_hex' : binascii.hexlify(d['public_key']) } )

		elif type == b"acc":
			json_db['acc'] = d['account']
			# print("Account %s (current key: %s)"%(d['account'], public_key_to_bc_address(d['public_key'])))

		elif type == b"acentry":
			json_db['acentry'] = (d['account'], d['nCreditDebit'], d['otherAccount'], time.ctime(d['nTime']), d['n'], d['comment'])

		# elif type == b"bestblock":
		# 	json_db['bestblock'] = binascii.hexlify(d['hashes'][0][::-1])

		elif type == b"ckey":
			crypted=True
			compressed = d['public_key'][0] != '\04'
			json_db['keys'].append({ 'pubkey': binascii.hexlify(d['public_key']),'addr': public_key_to_bc_address(d['public_key']), 'encrypted_privkey':  binascii.hexlify(d['encrypted_private_key']), 'compressed':compressed})

		elif type == b"mkey":
			json_db['mkey']['nID'] = d['nID']
			json_db['mkey']['encrypted_key'] = binascii.hexlify(d['encrypted_key'])
			json_db['mkey']['salt'] = binascii.hexlify(d['salt'])
			json_db['mkey']['nDerivationMethod'] = d['nDerivationMethod']
			json_db['mkey']['nDerivationIterations'] = d['nDerivationIterations']
			json_db['mkey']['otherParams'] = d['otherParams']

			if passphrase:
				res = crypter.SetKeyFromPassphrase(passphrase, d['salt'], d['nDerivationIterations'], d['nDerivationMethod'])
				if res == 0:
					logging.error("Unsupported derivation method")
					sys.exit(1)
				masterkey = crypter.Decrypt(d['encrypted_key'])
				crypter.SetKey(masterkey)

		else:
			json_db[type] = 'unsupported'
			if type not in b'keymeta'.split():
				print("Wallet data not recognized: %s"%str(d))

	list_of_reserve_not_in_pool=[]
	parse_wallet(db, item_callback)


	nkeys = len(json_db['keys'])
	i = 0
	for k in json_db['keys']:
		i+=1
		addr = k['addr']
		if include_balance:
#			print("%3d/%d  %s  %s" % (i, nkeys, k["addr"], k["balance"]))
			k["balance"] = balance(balance_site, k["addr"])
#			print("  %s" % (i, nkeys, k["addr"], k["balance"]))

		if addr in json_db['names'].keys():
			k["label"] = json_db['names'][addr]
			k["reserve"] = 0
		else:
			k["reserve"] = 1
			list_of_reserve_not_in_pool.append(k['pubkey'])


	def rnip_callback(a):
		list_of_reserve_not_in_pool.remove(a['public_key_hex'])

	if FillPool:
		map(rnip_callback, json_db['pool'])

		cpt=1
		for p in list_of_reserve_not_in_pool:
			update_wallet(db, 'pool', { 'public_key' : binascii.unhexlify(p), 'n' : cpt, 'nTime' : ts(), 'nVersion':80100 })
			cpt+=1



	db.close()

	crypted = 'salt' in json_db['mkey']

	if not crypted:
		print("The wallet is not encrypted")

	if crypted and not passphrase:
		print("The wallet is encrypted but no passphrase is used")

	if crypted and passphrase:
		check = True
		ppcorrect=True
		for k in json_db['keys']:
			if 'encrypted_privkey' in k:
				ckey = binascii.unhexlify(k['encrypted_privkey'])
				public_key = binascii.unhexlify(k['pubkey'])
				crypter.SetIV(Hash(public_key))
				secret = crypter.Decrypt(ckey)
				compressed = public_key[0] != '\04'


				if check:
					check = False
					pkey = EC_KEY(int(b'0x' + binascii.hexlify(secret), 16))
					if public_key != GetPubKey(pkey, compressed):
						print("The wallet is encrypted and the passphrase is incorrect")
						ppcorrect=False
						break

				sec = SecretToASecret(secret, compressed)
				k['sec'] = sec
				k['hexsec'] = binascii.hexlify(secret[:32])
				k['secret'] = binascii.hexlify(secret)
				k['compressed'] = compressed
				addr_to_keys[k['addr']]=[sec, k['pubkey']]
	#			del(k['ckey'])
	#			del(k['secret'])
	#			del(k['pubkey'])
				private_keys.append(sec)
		if ppcorrect:
			print("The wallet is encrypted and the passphrase is correct")

	for k in json_db['keys']:
		if k['compressed'] and 'secret' in k:
			k['secret']+=b"01"

#	del(json_db['pool'])
#	del(json_db['names'])

	return {'crypted':crypted}


def parse_private_key(sec, force_compressed=None):
	as_compressed = lambda x:x if force_compressed is None else force_compressed
	try:
		pkey = regenerate_key(sec)
		compressed = as_compressed(is_compressed(sec))
	except:
		pkey = None
		try:
			binascii.unhexlify(sec)
		except:
			pass
	if not pkey:
		if len(sec) == 64:
			pkey = EC_KEY(str_to_long(binascii.unhexlify(sec)))
			compressed = as_compressed(False)
		elif len(sec) == 66:
			pkey = EC_KEY(str_to_long(binascii.unhexlify(sec[:-2])))
			compressed = as_compressed(True)
		else:
			warnings.warn("Hexadecimal private keys must be 64 or 66 characters long (specified one is "+str(len(sec))+" characters long)")
			if len(sec)<64:
				compressed = as_compressed(False)
				warnings.warn("Padding with zeroes, %scompressed"%('un' if not compressed else ''))
				try:
					pkey = EC_KEY(str_to_long(binascii.unhexlify('0'*(64-len(sec)) + sec)))
				except Exception as e:
					warnings.warn(e)
					raise Exception("Failed padding with zeroes")
			elif len(sec)>66:
				compressed = as_compressed(False)
				warnings.warn("Keeping first 64 characters, %scompressed"%('un' if not compressed else ''))
				pkey = EC_KEY(str_to_long(binascii.unhexlify(sec[:64])))
			else:
				raise Exception("Error")
	return (pkey, compressed)

def pubkey_info(pubkey, network):
	addr = public_key_to_bc_address(pubkey, network.p2pkh_prefix)
	p2wpkh = p2sh_script_to_addr(b'\x00\x14'+hash_160(pubkey))
	witaddr = witprog_to_bech32_addr(hash_160(pubkey), network)
	h160 = bc_address_to_hash_160(addr)
	return addr, p2wpkh, witaddr, h160

def keyinfo(sec, network=None, print_info=False, force_compressed=None):
	if not(network is None) and network.__class__ != Network:
		network = find_network(network) or network
	if sec.__class__ == Xpriv:
		assert sec.ktype == 0
		return keyinfo(binascii.hexlify(sec.key), network, print_info, force_compressed)
	network = network or network_bitcoin
	(pkey, compressed) = parse_private_key(sec, force_compressed)
	if not pkey:
		return False

	secret = GetSecret(pkey)
	private_key = GetPrivKey(pkey, compressed)
	uncompressed_ser_public_key = GetPubKey(pkey, False)
	ser_public_key = GetPubKey(pkey, compressed)
	addr, p2wpkh, witaddr, h160 = pubkey_info(ser_public_key, network)
	wif = SecretToASecret(secret, compressed) if network.wif_prefix else None

	if print_info:
		print("Network: %s"%network.name)
		print("Compressed: %s"%str(compressed))
		if network.p2pkh_prefix != None:
			print("P2PKH Address:       %s"%(addr))
		if compressed:
			if network.p2sh_prefix != None:
				print("P2SH-P2WPKH Address: %s"%(p2wpkh))
			else:
				print("P2SH unavailable:    unknown network P2SH prefix")
		if compressed:
			if network.segwit_hrp != None:
				print("P2WPKH Address:      %s"%(witaddr))
			else:
				print("P2WPKH unavailable:  unknown network SegWit HRP")
		if network.wif_prefix != None:
			print("Privkey:             %s"%wif)
		else:
			print("Privkey unavailable: unknown network WIF prefix")
		print("Hexprivkey:          %s"%bytes_to_str(binascii.hexlify(secret)))
		if compressed:
			warnings.warn("    For compressed keys, the hexadecimal private key sometimes contains an extra '01' at the end")
		print("Hash160:             %s"%bytes_to_str(binascii.hexlify(h160)))
		print("Pubkey:              %s"%bytes_to_str(binascii.hexlify(ser_public_key)))
		if int(binascii.hexlify(secret), 16)>_r:
			warnings.warn('/!\\ Beware, 0x%s is equivalent to 0x%.33x'%(binascii.hexlify(secret), int(binascii.hexlify(secret), 16)-_r))

	r = KeyInfo(secret, private_key, ser_public_key, uncompressed_ser_public_key, addr, wif, compressed)
	if network:
		ki = network.keyinfo(r, print_info=print_info)
		if ki:
			addr = ki.addr
		r = KeyInfo(secret, private_key, ser_public_key, uncompressed_ser_public_key, addr, wif, compressed)
	return r

def importprivkey(db, sec, label, reserve, verbose=True):
	k = keyinfo(sec, network, verbose)
	secret = k.secret
	private_key = k.private_key
	public_key = k.public_key
	addr = k.addr

	global crypter, passphrase, json_db
	crypted = False
	if 'mkey' in json_db.keys() and 'salt' in json_db['mkey']:
		crypted = True
	if crypted:
		if passphrase:
			cry_master = binascii.unhexlify(json_db['mkey']['encrypted_key'])
			cry_salt   = binascii.unhexlify(json_db['mkey']['salt'])
			cry_rounds = json_db['mkey']['nDerivationIterations']
			cry_method = json_db['mkey']['nDerivationMethod']

			crypter.SetKeyFromPassphrase(passphrase, cry_salt, cry_rounds, cry_method)
#			if verbose:
#				print("Import with", passphrase, "", binascii.hexlify(cry_master), "", binascii.hexlify(cry_salt))
			masterkey = crypter.Decrypt(cry_master)
			crypter.SetKey(masterkey)
			crypter.SetIV(Hash(public_key))
			e = crypter.Encrypt(secret)
			ck_epk=e

			update_wallet(db, 'ckey', { 'public_key' : public_key, 'encrypted_private_key' : ck_epk })
	else:
		update_wallet(db, 'key', { 'public_key' : public_key, 'private_key' : private_key })

	if not reserve:
		update_wallet(db, 'name', { 'hash' : addr, 'name' : label })


	return True

def balance(site, address):
	page=urllib.urlopen("%s%s" % (site, address))
	query_result=page.read()
	#If the initial API call returned an error, use a secondary API
	if query_result.startswith("error"):
		page = urllib.urlopen("%s%s" % (backup_balance_site, address))
		query_result = json.loads(page.read())["balance"]
	return query_result

def read_jsonfile(filename):
	filin = open(filename, 'r')
	txdump = filin.read()
	filin.close()
	return json.loads(txdump)

def write_jsonfile(filename, array):
	filout = open(filename, 'w')
	filout.write(json.dumps(array, sort_keys=True, indent=0))
	filout.close()

def export_all_keys(db, ks, filename):
	txt=";".join(ks)+"\n"
	for i in db['keys']:
		try:
			j=i.copy()
			if 'label' not in j:
				j['label']='#Reserve'
			t=";".join([str(j[k]) for k in ks])
			txt+=t+"\n"
		except:
			return False

	try:
		myFile = open(filename, 'w')
		myFile.write(txt)
		myFile.close()
		return True
	except:
		return False

def import_csv_keys(filename, wdir, wname, nbremax=9999999):
	global global_merging_message
	if filename[0]=="\x00":    #yeah, dirty workaround
		content=filename[1:]
	else:
		filen = open(filename, "r")
		content = filen.read()
		filen.close()

	db_env = create_env(wdir)
	read_wallet(json_db, db_env, wname, True, True, "", None)
	db = open_wallet(db_env, wname, writable=True)

	content=content.split('\n')
	content=content[:min(nbremax, len(content))]
	for i in range(len(content)):
		c=content[i]
		global_merging_message = ["Merging: "+str(round(100.0*(i+1)//len(content),1))+"%" for j in range(2)]
		if ';' in c and len(c)>0 and c[0]!="#":
			cs=c.split(';')
			sec,label=cs[0:2]
			reserve=False
			if label=="#Reserve":
				reserve=True
			importprivkey(db, sec, label, reserve, verbose=False)

	global_merging_message = ["Merging done.", ""]

	db.close()

	read_wallet(json_db, db_env, wname, True, True, "", None, True)  #Fill the pool if empty

	return True

def message_to_hash(msg, msgIsHex=False):
	str = ""
#	str += '04%064x%064x'%(pubkey.point.x(), pubkey.point.y())
#	str += "Padding text - "
	str += msg
	if msgIsHex:
		str = binascii.unhexlify(str)
	hash = Hash(str)
	return hash

def sign_message(secret, msg, msgIsHex=False):
	k = KEY()
	k.generate(secret)
	return k.sign(message_to_hash(msg, msgIsHex))

def verify_message_signature(pubkey, sign, msg, msgIsHex=False):
	k = KEY()
	k.set_pubkey(binascii.unhexlify(pubkey))
	return k.verify(message_to_hash(msg, msgIsHex), binascii.unhexlify(sign))


OP_DUP = 118;
OP_HASH160 = 169;
OP_EQUALVERIFY = 136;
OP_CHECKSIG = 172;

XOP_DUP = "%02x"%OP_DUP;
XOP_HASH160 = "%02x"%OP_HASH160;
XOP_EQUALVERIFY = "%02x"%OP_EQUALVERIFY;
XOP_CHECKSIG = "%02x"%OP_CHECKSIG;

BTC = 1e8

def ct(l_prevh, l_prevn, l_prevsig, l_prevpubkey, l_value_out, l_pubkey_out, is_msg_to_sign=-1, oldScriptPubkey=""):
	scriptSig = True
	if is_msg_to_sign != -1:
		scriptSig = False
		index = is_msg_to_sign

	ret = ""
	ret += inverse_str("%08x"%1)
	nvin = len(l_prevh)
	ret += "%02x"%nvin

	for i in range(nvin):
		txin_ret = ""
		txin_ret2 = ""

		txin_ret += inverse_str(l_prevh[i])
		txin_ret += inverse_str("%08x"%l_prevn[i])

		if scriptSig:
			txin_ret2 += "%02x"%(1+len(l_prevsig[i])//2)
			txin_ret2 += l_prevsig[i]
			txin_ret2 += "01"
			txin_ret2 += "%02x"%(len(l_prevpubkey[i])//2)
			txin_ret2 += l_prevpubkey[i]

			txin_ret += "%02x"%(len(txin_ret2)//2)
			txin_ret += txin_ret2

		elif index == i:
			txin_ret += "%02x"%(len(oldScriptPubkey)//2)
			txin_ret += oldScriptPubkey
		else:
			txin_ret += "00"

		ret += txin_ret
		ret += "ffffffff"


	nvout = len(l_value_out)
	ret += "%02x"%nvout
	for i in range(nvout):
		txout_ret = ""

		txout_ret += inverse_str("%016x"%(l_value_out[i]))
		txout_ret += "%02x"%(len(l_pubkey_out[i])//2+5)
		txout_ret += "%02x"%OP_DUP
		txout_ret += "%02x"%OP_HASH160
		txout_ret += "%02x"%(len(l_pubkey_out[i])//2)
		txout_ret += l_pubkey_out[i]
		txout_ret += "%02x"%OP_EQUALVERIFY
		txout_ret += "%02x"%OP_CHECKSIG
		ret += txout_ret

	ret += "00000000"
	if not scriptSig:
		ret += "01000000"
	return ret

def create_transaction(secret_key, hashes_txin, indexes_txin, pubkey_txin, prevScriptPubKey, amounts_txout, scriptPubkey):
	li1 = len(secret_key)
	li2 = len(hashes_txin)
	li3 = len(indexes_txin)
	li4 = len(pubkey_txin)
	li5 = len(prevScriptPubKey)

	if li1 != li2 or li2 != li3 or li3 != li4 or li4 != li5:
		print("Error in the number of tx inputs")
		exit(0)

	lo1 = len(amounts_txout)
	lo2 = len(scriptPubkey)

	if lo1 != lo2:
		print("Error in the number of tx outputs")
		exit(0)

	sig_txin = []
	i=0
	for cpt in hashes_txin:
		sig_txin.append(sign_message(binascii.unhexlify(secret_key[i]), ct(hashes_txin, indexes_txin, sig_txin, pubkey_txin, amounts_txout, scriptPubkey, i, prevScriptPubKey[i]), True)+"01")
		i+=1

	tx = ct(hashes_txin, indexes_txin, sig_txin, pubkey_txin, amounts_txout, scriptPubkey)
	hashtx = binascii.hexlify(Hash(binascii.unhexlify(tx)))

	for i in range(len(sig_txin)):
		try:
			verify_message_signature(pubkey_txin[i], sig_txin[i][:-2], ct(hashes_txin, indexes_txin, sig_txin, pubkey_txin, amounts_txout, scriptPubkey, i, prevScriptPubKey[i]), True)
			print("sig %2d: verif ok"%i)
		except:
			print("sig %2d: verif error"%i)
			exit(0)

#	tx += end_of_wallettx([], int(time.time()))
#	return [inverse_str(hashtx), "027478" + hashtx, tx]
	return [inverse_str(hashtx), "", tx]

def inverse_str(string):
	ret = ""
	for i in range(len(string)//2):
		ret += string[len(string)-2-2*i];
		ret += string[len(string)-2-2*i+1];
	return ret

def read_table(table, beg, end):
	rows = table.split(beg)
	for i in range(len(rows)):
		rows[i] = rows[i].split(end)[0]
	return rows

def read_blockexplorer_table(table):
	cell = []
	rows = read_table(table, '<tr>', '</tr>')
	for i in range(len(rows)):
		cell.append(read_table(rows[i], '<td>', '</td>'))
		del cell[i][0]
	del cell[0]
	del cell[0]
	return cell

txin_amounts = Bdict({})

def bc_address_to_available_tx(address, testnet=False):
	TN=""
	if testnet:
		TN="testnet"

	blockexplorer_url = "http://blockexplorer.com/"+TN+"/address/"
	ret = ""
	txin = []
	txin_no = Bdict({})
	global txin_amounts
	txout = []
	balance = 0
	txin_is_used = Bdict({})

	page = urllib.urlopen("%s/%s" % (blockexplorer_url, address))
	try:
		table = page.read().split('<table class="txtable">')[1]
		table = table.split("</table>")[0]
	except:
		return {address:[]}

	cell = read_blockexplorer_table(table)

	for i in range(len(cell)):
		txhash = read_table(cell[i][0], '/tx/', '#')[1]
		post_hash = read_table(cell[i][0], '#', '">')[1]
		io = post_hash[0]
		no_tx = post_hash[1:]
		if io in 'i':
			txout.append([txhash, post_hash])
		else:
			txin.append(txhash+no_tx)
			txin_no[txhash+no_tx] = post_hash[1:]
			txin_is_used[txhash+no_tx] = 0

		#hashblock = read_table(cell[i][1], '/block/', '">')[1]
		#blocknumber = read_table(cell[i][1], 'Block ', '</a>')[1]

		txin_amounts[txhash+no_tx] = round(float(cell[i][2]), 8)

#		if cell[i][3][:4] in 'Sent' and io in 'o':
#			print(cell[i][3][:4])
#			print(io)
#			return 'error'
#		if cell[i][3][:4] in 'Rece' and io in 'i':
#			print(cell[i][3][:4])
#			print(io)
#			return 'error'

		balance = round(float(cell[i][5]), 8)


	for tx in txout:
		pagetx = urllib.urlopen("http://blockexplorer.com/"+TN+"/tx/"+tx[0])
		table_in = pagetx.read().split('<a name="outputs">Outputs</a>')[0].split('<table class="txtable">')[1].split("</table>")[0]

		cell = read_blockexplorer_table(table_in)
		for i in range(len(cell)):
			txhash = read_table(cell[i][0], '/tx/', '#')[1]
			no_tx = read_table(cell[i][0], '#', '">')[1][1:]

			if txhash+no_tx in txin:
				txin_is_used[txhash+no_tx] = 1

	ret = []
	for tx in txin:
		if not txin_is_used[tx]:
			ret.append([tx,txin_amounts[tx],txin_no[tx]])

	return {address : ret}

empty_txin=Bdict({'hash':'', 'index':'', 'sig':'##', 'pubkey':'', 'oldscript':'', 'addr':''})
empty_txout=Bdict({'amount':'', 'script':''})

class tx():
	ins=[]
	outs=[]
	tosign=False

	def hashtypeone(index,script):
		global empty_txin
		for i in range(len(ins)):
			self.ins[i]=empty_txin
		self.ins[index]['pubkey']=""
		self.ins[index]['oldscript']=s
		self.tosign=True

	def copy():
		r=tx()
		r.ins=self.ins[:]
		r.outs=self.outs[:]
		return r

	def sign(n=-1):
		if n==-1:
			for i in range(len(ins)):
				self.sign(i)
				return "done"

		global json_db
		txcopy=self.copy()
		txcopy.hashtypeone(i, self.ins[n]['oldscript'])

		sec=''
		for k in json_db['keys']:
			if k['addr']==self.ins[n]['addr'] and 'hexsec' in k:
				sec=k['hexsec']
		if sec=='':
			print("priv key not found (addr:"+self.ins[n]['addr']+")")
			return ""

		self.ins[n]['sig']=sign_message(binascii.unhexlify(sec), txcopy.get_tx(), True)

	def ser():
		r=Bdict({})
		r['ins']=self.ins
		r['outs']=self.outs
		r['tosign']=self.tosign
		return json.dumps(r)

	def unser(r):
		s=json.loads(r)
		self.ins=s['ins']
		self.outs=s['outs']
		self.tosign=s['tosign']

	def get_tx():
		r=''
		ret += inverse_str("%08x"%1)
		ret += "%02x"%len(self.ins)

		for i in range(len(self.ins)):
			txin=self.ins[i]
			ret += inverse_str(txin['hash'])
			ret += inverse_str("%08x"%txin['index'])

			if txin['pubkey']!="":
				tmp += "%02x"%(1+len(txin['sig'])//2)
				tmp += txin['sig']
				tmp += "01"
				tmp += "%02x"%(len(txin['pubkey'])//2)
				tmp += txin['pubkey']

				ret += "%02x"%(len(tmp)/2)
				ret += tmp

			elif txin['oldscript']!="":
				ret += "%02x"%(len(txin['oldscript'])//2)
				ret += txin['oldscript']

			else:
				ret += "00"

			ret += "ffffffff"

		ret += "%02x"%len(self.outs)

		for i in range(len(self.outs)):
			txout=self.outs[i]
			ret += inverse_str("%016x"%(txout['amount']))

			if txout['script'][:2]=='s:':  #script
				script=txout['script'][:2]
				ret += "%02x"%(len(script)//2)
				ret += script
			else:                         #address
				ret += "%02x"%(len(txout['script'])//2+5)
				ret += "%02x"%OP_DUP
				ret += "%02x"%OP_HASH160
				ret += "%02x"%(len(txout['script'])//2)
				ret += txout['script']
				ret += "%02x"%OP_EQUALVERIFY
				ret += "%02x"%OP_CHECKSIG

		ret += "00000000"
		if not self.tosign:
			ret += "01000000"
		return ret


def update_pyw():
	if md5_last_pywallet[0] and md5_last_pywallet[1] not in md5_pywallet:
		dl=urllib.urlopen('https://raw.github.com/jackjack-jj/pywallet/master/pywallet.py').read()
		if len(dl)>40 and md5_2(dl)==md5_last_pywallet[1]:
			filout = open(pyw_path+"/"+pyw_filename, 'w')
			filout.write(dl)
			filout.close()
		else:
			return "Problem when downloading new version ("+md5_2(dl)+"/"+md5_last_pywallet[1]+")"

def clone_wallet(parentPath, clonePath):
	types,datas=[],[]
	parentdir,parentname=os.path.split(parentPath)
	wdir,wname=os.path.split(clonePath)

	db_env = create_env(parentdir)
	read_wallet(json_db, db_env, parentname, True, True, "", False)

	types.append('version')
	datas.append({'version':json_db['version']})
	types.append('defaultkey')
	datas.append({'key':json_db['defaultkey']})
	for k in json_db['keys']:
		types.append('ckey')
		datas.append({'public_key':binascii.unhexlify(k['pubkey']),'encrypted_private_key':binascii.unhexlify(random_string(96))})
	for k in json_db['pool']:
		types.append('pool')
		datas.append({'n':k['n'],'nVersion':k['nVersion'],'nTime':k['nTime'],'public_key':binascii.unhexlify(k['public_key_hex'])})
	for addr,label in json_db['names'].items():
		types.append('name')
		datas.append({'hash':addr,'name':'Watch:'+label})

	db_env = create_env(wdir)
	create_new_wallet(db_env, wname, 60000)

	db = open_wallet(db_env, wname, True)
	NPP_salt = binascii.unhexlify(random_string(16))
	NPP_rounds = int(50000+random.random()*20000)
	NPP_method = 0
	NPP_MK = binascii.unhexlify(random_string(64))
	crypter.SetKeyFromPassphrase(random_string(64), NPP_salt, NPP_rounds, NPP_method)
	NPP_EMK = crypter.Encrypt(NPP_MK)
	update_wallet(db, 'mkey', {
		"encrypted_key": NPP_EMK,
		'nDerivationIterations' : NPP_rounds,
		'nDerivationMethod' : NPP_method,
		'nID' : 1,
		'otherParams' : b'',
		"salt": NPP_salt
	})
	db.close()

	read_wallet(json_db, db_env, wname, True, True, "", False)

	db = open_wallet(db_env, wname, writable=True)
	update_wallet(db, types, datas, True)
	db.close()
	print("Wallet successfully cloned to:\n   %s"%clonePath)

md5_last_pywallet = [False, ""]

def retrieve_last_pywallet_md5():
	global md5_last_pywallet
	md5_last_pywallet = [True, md5_onlinefile('https://raw.github.com/jackjack-jj/pywallet/master/pywallet.py')]

from optparse import OptionParser

def bech32_polymod(values):
	GEN = [0x3b6a57b2, 0x26508e6d, 0x1ea119fa, 0x3d4233dd, 0x2a1462b3]
	chk = 1
	for v in values:
		b = (chk >> 25)
		chk = (chk & 0x1ffffff) << 5 ^ v
		for i in range(5):
			chk ^= GEN[i] if ((b >> i) & 1) else 0
	return chk

def bech32_hrp_expand(s):
	return [ordsix(x) >> 5 for x in s] + [0] + [ordsix(x) & 31 for x in s]

def bech32_verify_checksum(hrp, data):
	return bech32_polymod(bech32_hrp_expand(hrp) + data) == 1

def bech32_create_checksum(hrp, data):
	values = bech32_hrp_expand(hrp) + data
	polymod = bech32_polymod(values + [0,0,0,0,0,0]) ^ 1
	return [(polymod >> 5 * (5 - i)) & 31 for i in range(6)]

BECH32_ALPH='qpzry9x8gf2tvdw0s3jn54khce6mua7l'
BASE32_ALPH='ABCDEFGHIJKLMNOPQRSTUVWXYZ234567'

def witprog_to_bech32_addr(witprog, network, witv=0):
	x = base64.b32encode(witprog)
	if PY3:x = x.decode()
	x = x.replace('=', '')
	data = [witv]+list(map(lambda y:BASE32_ALPH.index(y), x))
	combined = data + bech32_create_checksum(network.segwit_hrp, data)
	addr = network.segwit_hrp+'1'+''.join([BECH32_ALPH[d] for d in combined])
	return addr

def p2sh_script_to_addr(script):
	version=5
	return hash_160_to_bc_address(hash_160(script), version)

def whitepaper():
	try:
		rawtx = subprocess.check_output(["bitcoin-cli", "getrawtransaction", "54e48e5f5c656b26c3bca14a8c95aa583d07ebe84dde3b7dd4a78f4e4186e713"])
	except:
		rawtx = urllib.urlopen("https://blockchain.info/tx/54e48e5f5c656b26c3bca14a8c95aa583d07ebe84dde3b7dd4a78f4e4186e713?format=hex").read()
	outputs = rawtx.split("0100000000000000")
	pdf = b""
	for output in outputs[1:-2]:
		i = 6
		pdf += binascii.unhexlify(output[i:i+130])
		i += 132
		pdf += binascii.unhexlify(output[i:i+130])
		i += 132
		pdf += binascii.unhexlify(output[i:i+130])
	pdf += binascii.unhexlify(outputs[-2][6:-4])
	content = pdf[8:-8]
	assert hashlib.sha256(content).hexdigest() == 'b1674191a88ec5cdd733e4240a81803105dc412d6c6708d53ab94fc248f4f553'
	filename = 'bitcoin_whitepaper'
	while os.path.exists(filename+'.pdf'):
		filename += '_'
	with open(filename+'.pdf', "wb") as f:
		f.write(content)
	print("Wrote the Bitcoin whitepaper to %s.pdf"%filename)

bip39_wordlist = '''
 abandon ability able about above absent absorb abstract absurd abuse access accident account accuse achieve acid acoustic acquire across act action actor actress actual adapt add addict address adjust admit adult advance advice aerobic affair afford afraid again age agent agree ahead aim air
 airport aisle alarm album alcohol alert alien all alley allow almost alone alpha already also alter always amateur amazing among amount amused analyst anchor ancient anger angle angry animal ankle announce annual another answer antenna antique anxiety any apart apology appear apple approve april
 arch arctic area arena argue arm armed armor army around arrange arrest arrive arrow art artefact artist artwork ask aspect assault asset assist assume asthma athlete atom attack attend attitude attract auction audit august aunt author auto autumn average avocado avoid awake aware away awesome
 awful awkward axis baby bachelor bacon badge bag balance balcony ball bamboo banana banner bar barely bargain barrel base basic basket battle beach bean beauty because become beef before begin behave behind believe below belt bench benefit best betray better between beyond bicycle bid bike bind
 biology bird birth bitter black blade blame blanket blast bleak bless blind blood blossom blouse blue blur blush board boat body boil bomb bone bonus book boost border boring borrow boss bottom bounce box boy bracket brain brand brass brave bread breeze brick bridge brief bright bring brisk
 broccoli broken bronze broom brother brown brush bubble buddy budget buffalo build bulb bulk bullet bundle bunker burden burger burst bus business busy butter buyer buzz cabbage cabin cable cactus cage cake call calm camera camp can canal cancel candy cannon canoe canvas canyon capable capital
 captain car carbon card cargo carpet carry cart case cash casino castle casual cat catalog catch category cattle caught cause caution cave ceiling celery cement census century cereal certain chair chalk champion change chaos chapter charge chase chat cheap check cheese chef cherry chest chicken
 chief child chimney choice choose chronic chuckle chunk churn cigar cinnamon circle citizen city civil claim clap clarify claw clay clean clerk clever click client cliff climb clinic clip clock clog close cloth cloud clown club clump cluster clutch coach coast coconut code coffee coil coin collect
 color column combine come comfort comic common company concert conduct confirm congress connect consider control convince cook cool copper copy coral core corn correct cost cotton couch country couple course cousin cover coyote crack cradle craft cram crane crash crater crawl crazy cream credit
 creek crew cricket crime crisp critic crop cross crouch crowd crucial cruel cruise crumble crunch crush cry crystal cube culture cup cupboard curious current curtain curve cushion custom cute cycle dad damage damp dance danger daring dash daughter dawn day deal debate debris decade december decide
 decline decorate decrease deer defense define defy degree delay deliver demand demise denial dentist deny depart depend deposit depth deputy derive describe desert design desk despair destroy detail detect develop device devote diagram dial diamond diary dice diesel diet differ digital dignity
 dilemma dinner dinosaur direct dirt disagree discover disease dish dismiss disorder display distance divert divide divorce dizzy doctor document dog doll dolphin domain donate donkey donor door dose double dove draft dragon drama drastic draw dream dress drift drill drink drip drive drop drum dry
 duck dumb dune during dust dutch duty dwarf dynamic eager eagle early earn earth easily east easy echo ecology economy edge edit educate effort egg eight either elbow elder electric elegant element elephant elevator elite else embark embody embrace emerge emotion employ empower empty enable enact
 end endless endorse enemy energy enforce engage engine enhance enjoy enlist enough enrich enroll ensure enter entire entry envelope episode equal equip era erase erode erosion error erupt escape essay essence estate eternal ethics evidence evil evoke evolve exact example excess exchange excite
 exclude excuse execute exercise exhaust exhibit exile exist exit exotic expand expect expire explain expose express extend extra eye eyebrow fabric face faculty fade faint faith fall false fame family famous fan fancy fantasy farm fashion fat fatal father fatigue fault favorite feature february
 federal fee feed feel female fence festival fetch fever few fiber fiction field figure file film filter final find fine finger finish fire firm first fiscal fish fit fitness fix flag flame flash flat flavor flee flight flip float flock floor flower fluid flush fly foam focus fog foil fold follow
 food foot force forest forget fork fortune forum forward fossil foster found fox fragile frame frequent fresh friend fringe frog front frost frown frozen fruit fuel fun funny furnace fury future gadget gain galaxy gallery game gap garage garbage garden garlic garment gas gasp gate gather gauge
 gaze general genius genre gentle genuine gesture ghost giant gift giggle ginger giraffe girl give glad glance glare glass glide glimpse globe gloom glory glove glow glue goat goddess gold good goose gorilla gospel gossip govern gown grab grace grain grant grape grass gravity great green grid grief
 grit grocery group grow grunt guard guess guide guilt guitar gun gym habit hair half hammer hamster hand happy harbor hard harsh harvest hat have hawk hazard head health heart heavy hedgehog height hello helmet help hen hero hidden high hill hint hip hire history hobby hockey hold hole holiday
 hollow home honey hood hope horn horror horse hospital host hotel hour hover hub huge human humble humor hundred hungry hunt hurdle hurry hurt husband hybrid ice icon idea identify idle ignore ill illegal illness image imitate immense immune impact impose improve impulse inch include income
 increase index indicate indoor industry infant inflict inform inhale inherit initial inject injury inmate inner innocent input inquiry insane insect inside inspire install intact interest into invest invite involve iron island isolate issue item ivory jacket jaguar jar jazz jealous jeans jelly
 jewel job join joke journey joy judge juice jump jungle junior junk just kangaroo keen keep ketchup key kick kid kidney kind kingdom kiss kit kitchen kite kitten kiwi knee knife knock know lab label labor ladder lady lake lamp language laptop large later latin laugh laundry lava law lawn lawsuit
 layer lazy leader leaf learn leave lecture left leg legal legend leisure lemon lend length lens leopard lesson letter level liar liberty library license life lift light like limb limit link lion liquid list little live lizard load loan lobster local lock logic lonely long loop lottery loud lounge
 love loyal lucky luggage lumber lunar lunch luxury lyrics machine mad magic magnet maid mail main major make mammal man manage mandate mango mansion manual maple marble march margin marine market marriage mask mass master match material math matrix matter maximum maze meadow mean measure meat
 mechanic medal media melody melt member memory mention menu mercy merge merit merry mesh message metal method middle midnight milk million mimic mind minimum minor minute miracle mirror misery miss mistake mix mixed mixture mobile model modify mom moment monitor monkey monster month moon moral
 more morning mosquito mother motion motor mountain mouse move movie much muffin mule multiply muscle museum mushroom music must mutual myself mystery myth naive name napkin narrow nasty nation nature near neck need negative neglect neither nephew nerve nest net network neutral never news next nice
 night noble noise nominee noodle normal north nose notable note nothing notice novel now nuclear number nurse nut oak obey object oblige obscure observe obtain obvious occur ocean october odor off offer office often oil okay old olive olympic omit once one onion online only open opera opinion
 oppose option orange orbit orchard order ordinary organ orient original orphan ostrich other outdoor outer output outside oval oven over own owner oxygen oyster ozone pact paddle page pair palace palm panda panel panic panther paper parade parent park parrot party pass patch path patient patrol
 pattern pause pave payment peace peanut pear peasant pelican pen penalty pencil people pepper perfect permit person pet phone photo phrase physical piano picnic picture piece pig pigeon pill pilot pink pioneer pipe pistol pitch pizza place planet plastic plate play please pledge pluck plug plunge
 poem poet point polar pole police pond pony pool popular portion position possible post potato pottery poverty powder power practice praise predict prefer prepare present pretty prevent price pride primary print priority prison private prize problem process produce profit program project promote
 proof property prosper protect proud provide public pudding pull pulp pulse pumpkin punch pupil puppy purchase purity purpose purse push put puzzle pyramid quality quantum quarter question quick quit quiz quote rabbit raccoon race rack radar radio rail rain raise rally ramp ranch random range
 rapid rare rate rather raven raw razor ready real reason rebel rebuild recall receive recipe record recycle reduce reflect reform refuse region regret regular reject relax release relief rely remain remember remind remove render renew rent reopen repair repeat replace report require rescue
 resemble resist resource response result retire retreat return reunion reveal review reward rhythm rib ribbon rice rich ride ridge rifle right rigid ring riot ripple risk ritual rival river road roast robot robust rocket romance roof rookie room rose rotate rough round route royal rubber rude rug
 rule run runway rural sad saddle sadness safe sail salad salmon salon salt salute same sample sand satisfy satoshi sauce sausage save say scale scan scare scatter scene scheme school science scissors scorpion scout scrap screen script scrub sea search season seat second secret section security
 seed seek segment select sell seminar senior sense sentence series service session settle setup seven shadow shaft shallow share shed shell sheriff shield shift shine ship shiver shock shoe shoot shop short shoulder shove shrimp shrug shuffle shy sibling sick side siege sight sign silent silk
 silly silver similar simple since sing siren sister situate six size skate sketch ski skill skin skirt skull slab slam sleep slender slice slide slight slim slogan slot slow slush small smart smile smoke smooth snack snake snap sniff snow soap soccer social sock soda soft solar soldier solid
 solution solve someone song soon sorry sort soul sound soup source south space spare spatial spawn speak special speed spell spend sphere spice spider spike spin spirit split spoil sponsor spoon sport spot spray spread spring spy square squeeze squirrel stable stadium staff stage stairs stamp
 stand start state stay steak steel stem step stereo stick still sting stock stomach stone stool story stove strategy street strike strong struggle student stuff stumble style subject submit subway success such sudden suffer sugar suggest suit summer sun sunny sunset super supply supreme sure
 surface surge surprise surround survey suspect sustain swallow swamp swap swarm swear sweet swift swim swing switch sword symbol symptom syrup system table tackle tag tail talent talk tank tape target task taste tattoo taxi teach team tell ten tenant tennis tent term test text thank that theme
 then theory there they thing this thought three thrive throw thumb thunder ticket tide tiger tilt timber time tiny tip tired tissue title toast tobacco today toddler toe together toilet token tomato tomorrow tone tongue tonight tool tooth top topic topple torch tornado tortoise toss total tourist
 toward tower town toy track trade traffic tragic train transfer trap trash travel tray treat tree trend trial tribe trick trigger trim trip trophy trouble truck true truly trumpet trust truth try tube tuition tumble tuna tunnel turkey turn turtle twelve twenty twice twin twist two type typical
 ugly umbrella unable unaware uncle uncover under undo unfair unfold unhappy uniform unique unit universe unknown unlock until unusual unveil update upgrade uphold upon upper upset urban urge usage use used useful useless usual utility vacant vacuum vague valid valley valve van vanish vapor various
 vast vault vehicle velvet vendor venture venue verb verify version very vessel veteran viable vibrant vicious victory video view village vintage violin virtual virus visa visit visual vital vivid vocal voice void volcano volume vote voyage wage wagon wait walk wall walnut want warfare warm warrior
 wash wasp waste water wave way wealth weapon wear weasel weather web wedding weekend weird welcome west wet whale what wheat wheel when where whip whisper wide width wife wild will win window wine wing wink winner winter wire wisdom wise wish witness wolf woman wonder wood wool word work world
 worry worth wrap wreck wrestle wrist write wrong yard year yellow you young youth zebra zero zone zoo
'''.split()

PBKDF2_ROUNDS = 2048
def binary_search(a, x, lo, hi):
    hi = hi if hi is not None else len(a)
    pos = bisect.bisect_left(a, x, lo, hi)
    return pos if pos != hi and a[pos] == x else -1

class Mnemonic(object):
    def __init__(self):
        self.language = "english"
        self.radix = 2048
        self.wordlist = bip39_wordlist
        if len(self.wordlist) != self.radix:
            raise ValueError("Wordlist should contain {} words, but it's {} words long instead.".format(self.radix, len(self.wordlist)))

    @staticmethod
    def normalize_string(txt):
        if isinstance(txt, bytes):
            utxt = txt.decode("utf8")
        elif isinstance(txt, str):
            utxt = txt
        else:
            raise TypeError("String value expected")
        return unicodedata.normalize("NFKD", utxt)

    def generate(self, strength=128):
        if strength not in [128, 160, 192, 224, 256]:
            raise ValueError("Invalid strength value. Allowed values are [128, 160, 192, 224, 256].")
        return self.to_mnemonic(os.urandom(strength // 8))

    def to_entropy(self, words):
        if not isinstance(words, list):
            words = words.split(" ")
        if len(words) not in [12, 15, 18, 21, 24]:
            raise ValueError("Number of words must be one of the following: [12, 15, 18, 21, 24], but it is not (%d)."%len(words))
        concatLenBits = len(words) * 11
        concatBits = [False] * concatLenBits
        wordindex = 0
        if self.language == "english":
            use_binary_search = True
        else:
            use_binary_search = False
        for word in words:
            ndx = (
                binary_search(self.wordlist, word)
                if use_binary_search
                else self.wordlist.index(word)
            )
            if ndx < 0:
                raise LookupError('Unable to find "%s" in word list.' % word)
            for ii in range(11):
                concatBits[(wordindex * 11) + ii] = (ndx & (1 << (10 - ii))) != 0
            wordindex += 1
        checksumLengthBits = concatLenBits // 33
        entropyLengthBits = concatLenBits - checksumLengthBits
        entropy = bytearray(entropyLengthBits // 8)
        for ii in range(len(entropy)):
            for jj in range(8):
                if concatBits[(ii * 8) + jj]:
                    entropy[ii] |= 1 << (7 - jj)
        hashBytes = hashlib.sha256(entropy).digest()
        hashBits = list(
            itertools.chain.from_iterable(
                [c & (1 << (7 - i)) != 0 for i in range(8)] for c in hashBytes
            )
        )
        for i in range(checksumLengthBits):
            if concatBits[entropyLengthBits + i] != hashBits[i]:
                raise ValueError("Failed checksum.")
        return entropy

    def to_mnemonic(self, data):
        if len(data) not in [16, 20, 24, 28, 32]:
            raise ValueError("Data length should be one of the following: [16, 20, 24, 28, 32], but is {}.".format(len(data)))
        h = hashlib.sha256(data).hexdigest()
        b = (
            bin(int.from_bytes(data, byteorder="big"))[2:].zfill(len(data) * 8)
            + bin(int(h, 16))[2:].zfill(256)[: len(data) * 8 // 32]
        )
        result = []
        for i in range(len(b) // 11):
            idx = int(b[i * 11 : (i + 1) * 11], 2)
            result.append(self.wordlist[idx])
        if self.language == "japanese":
            result_phrase = "\u3000".join(result)
        else:
            result_phrase = " ".join(result)
        return result_phrase

    def check(self, mnemonic):
        mnemonic_list = self.normalize_string(mnemonic).split(" ")
        if len(mnemonic_list) not in [12, 15, 18, 21, 24]:
            return False
        try:
            idx = map(lambda x: bin(self.wordlist.index(x))[2:].zfill(11), mnemonic_list)
            b = "".join(idx)
        except ValueError:
            return False
        l = len(b)  # noqa: E741
        d = b[: l // 33 * 32]
        h = b[-l // 33 :]
        nd = int(d, 2).to_bytes(l // 33 * 4, byteorder="big")
        nh = bin(int(hashlib.sha256(nd).hexdigest(), 16))[2:].zfill(256)[: l // 33]
        return h == nh

    def expand_word(self, prefix):
        if prefix in self.wordlist:
            return prefix
        else:
            matches = [word for word in self.wordlist if word.startswith(prefix)]
            if len(matches) == 1:  # matched exactly one word in the wordlist
                return matches[0]
            else:
                return prefix

    def expand(self, mnemonic):
        return " ".join(map(self.expand_word, mnemonic.split(" ")))

    @classmethod
    def to_seed(cls, mnemonic, passphrase = ""):
        mnemonic = cls.normalize_string(mnemonic)
        passphrase = cls.normalize_string(passphrase)
        passphrase = "mnemonic" + passphrase
        mnemonic_bytes = mnemonic.encode("utf-8")
        passphrase_bytes = passphrase.encode("utf-8")
        stretched = hashlib.pbkdf2_hmac("sha512", mnemonic_bytes, passphrase_bytes, PBKDF2_ROUNDS)
        return stretched[:64]

    @classmethod
    def mnemonic_to_xprv(cls, mnemonic, passphrase = ""):
    	seed = cls.to_seed(mnemonic, passphrase)
    	return Xpriv.from_seed(seed)

    @staticmethod
    def to_hd_master_key(seed, testnet = False):
        if len(seed) != 64:
            raise ValueError("Provided seed should have length of 64")
        seed = hmac.new(b"Bitcoin seed", seed, digestmod=hashlib.sha512).digest()
        xprv = b"\x04\x88\xad\xe4"  # Version for private mainnet
        if testnet:
            xprv = b"\x04\x35\x83\x94"  # Version for private testnet
        xprv += b"\x00" * 9  # Depth, parent fingerprint, and child number
        xprv += seed[32:]  # Chain code
        xprv += b"\x00" + seed[:32]  # Master key
        hashed_xprv = hashlib.sha256(xprv).digest()
        hashed_xprv = hashlib.sha256(hashed_xprv).digest()
        xprv += hashed_xprv[:4]
        return b58encode(xprv)

bip39_mnemonic = Mnemonic()

def parse_ckd_path(str_path):
	str_path = str_path.lstrip('m/')
	path_split = []
	for j in str_path.split('/'):
		if not j:continue
		hardened = 0
		if j.endswith("'") or j.lower().endswith("h"):
			hardened = 0x80000000
			j = j[:-1]
		try:
			path_split.append([int(j)+hardened])
		except:
			a, b = map(int, j.split('-'))
			path_split.append(list(range(a+hardened, b+1+hardened)))
	return path_split

class Xpriv(collections.namedtuple('XprivNT', 'version depth prt_fpr childnr cc ktype key')):
	xpriv_fmt = '>IB4sI32sB32s'
	def __new__(cls, *a, **kw):
		self = super(Xpriv, cls).__new__(cls, *a, **kw)
		self.fullpath = 'm'
		return self
	@classmethod
	def xpriv_version_bytes(cls):return 0x0488ADE4
	@classmethod
	def xpub_version_bytes(cls):return 0x0488B21E
	@classmethod
	def from_mnemomic(cls, mnemonic, passphrase = ""):
		return bip39_mnemonic.mnemonic_to_xprv(mnemonic, passphrase)
	@classmethod
	def from_seed(cls, s, seed = b'Bitcoin seed'):
		I = hmac.new(seed, s, digestmod=hashlib.sha512).digest()
		mk, cc = I[:32], I[32:]
		return cls(cls.xpriv_version_bytes(), 0, b'\x00'*4, 0, cc, 0, mk)
	def clone(self):
		return self.__class__.b58decode(self.b58encode())
	def b58encode(self):
		return EncodeBase58Check(struct.pack(self.xpriv_fmt, *self._asdict().values()))
	def address(self, **kw):
		return keyinfo(self, kw.get('network'), False, True).addr
	def key_hex(self):
		return binascii.hexlify(self.key)
	def xpub(self, **kw):
		pubk = keyinfo(self, None, False, True).public_key
		xpub_content = self.clone()._replace(version=self.xpub_version_bytes(), ktype=ordsix(pubk[0]), key=pubk[1:])
		return EncodeBase58Check(struct.pack(self.xpriv_fmt, *xpub_content))
	@classmethod
	def b58decode(cls, b58xpriv):
		return cls(*struct.unpack(cls.xpriv_fmt, DecodeBase58Check(b58xpriv)))
	def multi_ckd_xpriv(self, str_path):
		path_split = parse_ckd_path(str_path)
		rev_path_split = path_split[::-1]
		xprivs = [self]
		while rev_path_split:
			children_nrs = rev_path_split.pop()
			xprivs = [parent.ckd_xpriv(child_nr) for parent in xprivs for child_nr in children_nrs]
		return xprivs
	def set_fullpath(self, base, x):
		self.fullpath = base + '/' + ("%d'"%(x-0x80000000) if x>=0x80000000 else "%d"%x)
		return self
	def ckd_xpriv(self, *indexes):
		if indexes.__class__ != tuple:
			indexes = [indexes]
		if indexes[0].__class__ != int:
			indexes = list(map(lambda x:x[0], parse_ckd_path(indexes[0])))
		i = indexes[0]
		if i<0:
			i = 0x80000000-i
		assert self.ktype == 0
		par_pubk = keyinfo(self, None, False, True).public_key
		seri = struct.pack('>I',i)
		if i>=0x80000000:
			I = hmac.new(self.cc, b'\x00'+self.key+seri, digestmod=hashlib.sha512).digest()
		else:
			I = hmac.new(self.cc, par_pubk+seri, digestmod=hashlib.sha512).digest()
		il, ir = I[:32], I[32:]
		pk = hex((int(binascii.hexlify(il), 16) + int(binascii.hexlify(self.key), 16))%_r)[2:].replace('L', '').zfill(64)
		child = self.__class__(self.version, self.depth+1, hash_160(par_pubk)[:4], i, ir, 0, binascii.unhexlify(pk)).set_fullpath(self.fullpath, i)
		if len(indexes)>=2:
			return child.ckd_xpriv(*indexes[1:])
		return child
	def hprivcontent(self):
		return binascii.hexlify(DecodeBase58Check(self.b58encode()))
	def hpubcontent(self):
		return binascii.hexlify(DecodeBase58Check(self.xpub()))
	def keyinfo(self, network_name='Bitcoin'):
		keyinfo(self, network_name, True, False)
		print()
		keyinfo(self, network_name, True, True)

def dump_bip32_privkeys(xpriv, paths='m/0', fmt='addr', **kw):
	if fmt == 'addr':
		dump_key = lambda x:x.addr
	elif fmt == 'privkey':
		dump_key = lambda x:bytes_to_str(binascii.hexlify(x.secret))
	elif fmt == 'addrprivkey':
		dump_key = lambda x:x.addr+' '+bytes_to_str(binascii.hexlify(x.secret))
	elif fmt == 'addrwif':
		dump_key = lambda x:x.addr+' '+x.wif
	else:
		dump_key = lambda x:x.wif
	try:
		xpriv = Xpriv.b58decode(xpriv)
	except:pass
	for child in xpriv.multi_ckd_xpriv(paths):
		print('%s: %s'%(child.fullpath, dump_key(keyinfo(child, kw.get('network'), False, True))))

class TestPywallet(unittest.TestCase):
	def setUp(self):
		super(TestPywallet, self).setUp()
		warnings.simplefilter('ignore')
	def test_btc_privkey_1(self):
		key = keyinfo('1', network=network_bitcoin, force_compressed=False)
		self.assertEqual(key.addr, '1EHNa6Q4Jz2uvNExL497mE43ikXhwF6kZm')
		self.assertEqual(key.wif, '5HpHagT65TZzG1PH3CSu63k8DbpvD8s5ip4nEB3kEsreAnchuDf')
		self.assertEqual(key.secret, b'\x00'*31+b'\x01')
		self.assertFalse(key.compressed)
	def test_btc_privkey_1_from_wif(self):
		key = keyinfo('5HpHagT65TZzG1PH3CSu63k8DbpvD8s5ip4nEB3kEsreAnchuDf', network=network_bitcoin, force_compressed=False)
		self.assertEqual(key.addr, '1EHNa6Q4Jz2uvNExL497mE43ikXhwF6kZm')
	def test_bad_privkey_format(self):
		with self.assertRaises(Exception):
			keyinfo('g', network=network_bitcoin)
	def test_btc_bip32_test_vectors(self):
		self.assertEqual(
			Xpriv.from_seed(binascii.unhexlify('000102030405060708090a0b0c0d0e0f'))
				.ckd_xpriv(0x80000000, 1, -2, 2, 1000000000).xpub(),
			'xpub6H1LXWLaKsWFhvm6RVpEL9P4KfRZSW7abD2ttkWP3SSQvnyA8FSVqNTEcYFgJS2UaFcxupHiYkro49S8yGasTvXEYBVPamhGW6cFJodrTHy'
		)
		self.assertEqual(
			Xpriv.from_seed(binascii.unhexlify('fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542'))
				.ckd_xpriv(0, -2147483647, 1, -2147483646, 2).xpub(),
			'xpub6FnCn6nSzZAw5Tw7cgR9bi15UV96gLZhjDstkXXxvCLsUXBGXPdSnLFbdpq8p9HmGsApME5hQTZ3emM2rnY5agb9rXpVGyy3bdW6EEgAtqt'
		)
		self.assertEqual(
			Xpriv.from_seed(binascii.unhexlify('4b381541583be4423346c643850da4b320e46a87ae3d2a4e6da11eba819cd4acba45d239319ac14f863b8d5ab5a0d0c64d2e8a1e7d1457df2e5a3c51c73235be'))
				.ckd_xpriv(0x80000000).xpub(),
			'xpub68NZiKmJWnxxS6aaHmn81bvJeTESw724CRDs6HbuccFQN9Ku14VQrADWgqbhhTHBaohPX4CjNLf9fq9MYo6oDaPPLPxSb7gwQN3ih19Zm4Y'
		)
	def test_btc_bip32_2(self):
		xpriv = "xprv9s21ZrQH143K2gCVXRarFj5npbgjtJ7MuNb15AoRYJ92ZMA1hcnoqpxJKfcsiMHP6cNmDKHCTphsC6uzzyzr2MwjXbDxg6U9ivvEupavYUb"
		paths = "m/7-8'/3/99'/38-39"
		keys = Xpriv.b58decode(xpriv).multi_ckd_xpriv(paths)
		for k, privkey in zip(keys, [
					'5ca736abd3b19632d11366c4dd79c227236500879980c6a1fc4e7c1e33933350',
					'8c793bce5319bf04349b5e4d21d091a98c1a1ad632bffc0425a5f4802c999a76',
					'692f2ddb1d5c7213d194643984642df6e9a5c8cd14a1a6b4054571955fcab05f',
					'8739db9026ceb50d7774ef145bd27e899228700f1096072fe9d26f8387378314',
				]):
			self.assertEqual(k.key, binascii.unhexlify(privkey))
	def test_btc_bip39_test_vectors(self):
		self.assertEqual(
			Xpriv.from_mnemomic('abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about', 'TREZOR').b58encode(),
			'xprv9s21ZrQH143K3h3fDYiay8mocZ3afhfULfb5GX8kCBdno77K4HiA15Tg23wpbeF1pLfs1c5SPmYHrEpTuuRhxMwvKDwqdKiGJS9XFKzUsAF'
		)
		self.assertEqual(
			Xpriv.from_mnemomic('void come effort suffer camp survey warrior heavy shoot primary clutch crush open amazing screen patrol group space point ten exist slush involve unfold', 'TREZOR').b58encode(),
			'xprv9s21ZrQH143K39rnQJknpH1WEPFJrzmAqqasiDcVrNuk926oizzJDDQkdiTvNPr2FYDYzWgiMiC63YmfPAa2oPyNB23r2g7d1yiK6WpqaQS'
		)

	def test_btc_key_recovery(self):
		pass

if __name__ == '__main__':
	parser = OptionParser(usage="%prog [options]", version="%prog 1.1")

	parser.add_option("--dump_bip32", nargs=2,
		help="dump the keys from a xpriv and a path, usage: --dump_bip32 xprv9s21ZrQH143K m/0H/1-2/2H/2-4")

	parser.add_option("--bip32_format",
		help="format of dumped bip32 keys")

	parser.add_option("--passphrase", dest="passphrase",
		help="passphrase for the encrypted wallet")

	parser.add_option("--find_address",
		help="find info about an address")

	parser.add_option("-d", "--dumpwallet", dest="dump", action="store_true",
		help="dump wallet in json format")

	parser.add_option("--dumpformat", default="all",
		help="choose what to extract in a wallet dump")

	parser.add_option("--dumpwithbalance", dest="dumpbalance", action="store_true",
		help="includes balance of each address in the json dump, takes about 2 minutes per 100 addresses")

	parser.add_option("--importprivkey", dest="key",
		help="import private key from vanitygen")

	parser.add_option("--importhex", dest="keyishex", action="store_true",
		help="DEPRECATED, useless")

	parser.add_option("--datadir", dest="datadir",
		help="REMOVED OPTION: put full path in the --wallet option")

	parser.add_option("-w", "--wallet", dest="walletfile",
		help="wallet filename (defaults to wallet.dat)",
		default="")

	parser.add_option("--label", dest="label",
		help="label shown in the adress book (defaults to '')",
		default="")

	parser.add_option("--testnet", dest="testnet", action="store_true",
		help="use testnet subdirectory and address type")

	parser.add_option("--namecoin", dest="namecoin", action="store_true",
		help="use namecoin address type")

	parser.add_option("--eth", dest="ethereum", action="store_true",
		help="use ethereum address type")

	parser.add_option("--otherversion", dest="otherversion",
		help="use other network address type, either P2PKH prefix only (e.g. 111) or full network info as 'name,p2pkh,p2sh,wif,segwithrp' (e.g. btc,0,0,0x80,bc)")

	parser.add_option("--info", dest="keyinfo", action="store_true",
		help="display pubkey, privkey (both depending on the network) and hexkey")

	parser.add_option("--reserve", dest="reserve", action="store_true",
		help="import as a reserve key, i.e. it won't show in the adress book")

	parser.add_option("--multidelete", dest="multidelete",
		help="deletes data in your wallet, according to the file provided")

	parser.add_option("--balance", dest="key_balance",
		help="prints balance of KEY_BALANCE")

	parser.add_option("--recover", dest="recover", action="store_true",
		help="recover your deleted keys, use with recov_size and recov_device")

	parser.add_option("--recov_device", dest="recov_device",
		help="device to read (e.g. /dev/sda1 or E: or a file)")

	parser.add_option("--recov_size", dest="recov_size",
		help="number of bytes to read (e.g. 20Mo or 50Gio)")

	parser.add_option("--recov_outputdir", dest="recov_outputdir",
		help="output directory where the recovered wallet will be put")

	parser.add_option("--clone_watchonly_from", dest="clone_watchonly_from",
		help="path of the original wallet")

	parser.add_option("--clone_watchonly_to", dest="clone_watchonly_to",
		help="path of the resulting watch-only wallet")

	parser.add_option("--dont_check_walletversion", dest="dcv", action="store_true",
		help="don't check if wallet version > %d before running (WARNING: this may break your wallet, be sure you know what you do)"%max_version)

	parser.add_option("--random_key", action="store_true",
		help="print info of a randomly generated private key")

	parser.add_option("--whitepaper", action="store_true",
		help="write the Bitcoin whitepaper using bitcoin-cli or blockchain.info")

	parser.add_option("--minimal_encrypted_copy", action="store_true",
		help="write a copy of an encrypted wallet with only an empty address, *should* be safe to share when needing help bruteforcing the password")

	parser.add_option("--tests", action="store_true",
		help="run tests")


#	parser.add_option("--forcerun", dest="forcerun",
#		action="store_true",
#		help="run even if pywallet detects bitcoin is running")

	(options, args) = parser.parse_args()

#	a=Popen("ps xa | grep ' bitcoin'", shell=True, bufsize=-1, stdout=PIPE).stdout
#	aread=a.read()
#	nl = aread.count("\n")
#	a.close()
#	if nl > 2:
#		print('Bitcoin seems to be running: \n"%s"'%(aread))
#		if options.forcerun is None:
#			exit(0)

	if options.tests:
		unittest.main(argv=sys.argv[:1] + ['TestPywallet'])
		exit()

	if options.dump_bip32:
		print("Warning: single quotes (') may be parsed by your terminal, please use \"H\" for hardened keys")
		dump_bip32_privkeys(*options.dump_bip32, format=options.bip32_format)
		exit()

	if options.whitepaper:
		whitepaper()
		exit()

	if options.passphrase:
		passphrase = options.passphrase

	if not(options.clone_watchonly_from is None) and options.clone_watchonly_to:
		clone_wallet(options.clone_watchonly_from, options.clone_watchonly_to)
		exit(0)


	if options.recover:
		if options.recov_size is None or options.recov_device is None or options.recov_outputdir is None:
			print("You must provide the device, the number of bytes to read and the output directory")
			exit(0)
		device = options.recov_device
		if len(device) in [2,3] and device[1]==':':
			device="\\\\.\\"+device
		size = read_device_size(options.recov_size)

		passphraseRecov=None
		while not passphraseRecov:
			passphraseRecov=getpass.getpass("Enter the passphrase for the wallet that will contain all the recovered keys%s: "%('' if passphraseRecov is None else " (can't be empty)"))
		passphrase=passphraseRecov

		passes=[]
		p=' '
		print('\nEnter the possible passphrases used in your deleted wallets.')
		print("Don't forget that more passphrases = more time to test the possibilities.")
		print('Write one passphrase per line and end with an empty line.')
		while p!='':
			p=getpass.getpass("Possible passphrase: ")
			if p!='':
				passes.append(p)

		print("\nStarting recovery.")
		recoveredKeys=recov(device, passes, size, 10240, options.recov_outputdir)
		recoveredKeys=list(set(recoveredKeys))
#		print(recoveredKeys[0:5])


		db_env = create_env(options.recov_outputdir)
		recov_wallet_name = "recovered_wallet_%s.dat"%ts()

		create_new_wallet(db_env, recov_wallet_name, 32500)

		if passphraseRecov!="I don't want to put a password on the recovered wallet and I know what can be the consequences.":
			db = open_wallet(db_env, recov_wallet_name, True)

			NPP_salt=os.urandom(8)
			NPP_rounds=int(50000+random.random()*20000)
			NPP_method=0
			NPP_MK=os.urandom(32)
			crypter.SetKeyFromPassphrase(passphraseRecov, NPP_salt, NPP_rounds, NPP_method)
			NPP_EMK = crypter.Encrypt(NPP_MK)
			update_wallet(db, 'mkey', {
				"encrypted_key": NPP_EMK,
				'nDerivationIterations' : NPP_rounds,
				'nDerivationMethod' : NPP_method,
				'nID' : 1,
				'otherParams' : b'',
				"salt": NPP_salt
			})
			db.close()

		read_wallet(json_db, db_env, recov_wallet_name, True, True, "", False)

		db = open_wallet(db_env, recov_wallet_name, True)

		print("\n\nImporting:")
		for i,sec in enumerate(recoveredKeys):
			sec=binascii.hexlify(sec)
			print("Importing key %4d/%d"%(i+1, len(recoveredKeys)))
			importprivkey(db, sec, "recovered: %s"%sec, None, False)
			importprivkey(db, sec+'01', "recovered: %s"%sec, None, False)
		db.close()

		print("\n\nThe new wallet %s/%s contains the %d recovered key%s"%(options.recov_outputdir, recov_wallet_name, len(recoveredKeys), plural(len(recoveredKeys))))

		exit(0)


	if 'bsddb' in missing_dep:
		print("pywallet needs 'bsddb' package to run, please install it")
		exit(0)

	if 'ecdsa' in missing_dep:
		print("Warning: 'ecdsa' package is not installed, so you won't be able to sign/verify messages but everything else will work fine")

	if not(options.dcv is None):
		max_version = 10 ** 9

	if not(options.datadir is None):
		print("Depreacation")
		print("  The --datadir option has been deprecated, now the full path of the wallet file should go to --wallet")
		print("  If you're not sure what to do, concatenating the old --datadir content, then a directory separator, then the old --wallet should do the trick")
		print("  If not, ask for help in the Pywallet thread: https://bitcointalk.org/index.php?topic=34028")

	db_dir = ""
	if options.walletfile:
		if options.datadir:options.walletfile=options.datadir+os.path.sep+options.walletfile
		if not os.path.isfile(options.walletfile):
			print("ERROR: wallet file %s can't be found"%repr(os.path.realpath(options.walletfile)))
			exit()
		db_dir, wallet_name = os.path.split(os.path.realpath(options.walletfile))

	if not(options.key_balance is None):
		print(balance(balance_site, options.key_balance))
		exit(0)

	network = network_bitcoin
	if not(options.otherversion is None):
		try:
			network = find_network(options.otherversion)
			if not network:
				network = Network('Unknown network', int(options.otherversion), None, None, None)
				print("Some network info is missing: please use the complete network format")
		except:
			network_info = options.otherversion.split(',')
			parse_int=lambda x:int(x, 16) if x.startswith('0x') else int(x)
			network = Network(network_info[0], parse_int(network_info[1]), parse_int(network_info[2]), parse_int(network_info[3]), network_info[4])
	if options.namecoin:
		network = Network('Namecoin', 52, 13, 180, 'nc')
	elif options.testnet:
		db_dir += "/testnet3"
		network = network_bitcoin_testnet3
	elif options.ethereum:
		network = network_ethereum

	if not(options.keyinfo is None) or options.random_key:
		if not options.keyinfo:
			options.key = binascii.hexlify(os.urandom(32))
		keyinfo(options.key, network, True, False)
		print("")
		keyinfo(options.key, network, True, True)
		exit(0)

	if not db_dir:
		print("A mandatory option is missing\n")
		parser.print_help()
		exit()
	db_env = create_env(db_dir)

	if not(options.multidelete is None):
		filename=options.multidelete
		filin = open(filename, 'r')
		content = filin.read().split('\n')
		filin.close()
		typedel=content[0]
		kd=filter(bool,content[1:])
		try:
			r=delete_from_wallet(db_env, wallet_name, typedel, kd)
			print('%d element%s deleted'%(r, 's'*(int(r>1))))
		except:
			print("Error: do not try to delete a non-existing transaction.")
			exit(1)
		exit(0)

	if options.minimal_encrypted_copy:
		db = open_wallet(db_env, wallet_name)
		minimal_wallet = wallet_name + '.minimal_for_decrypting.dat'
		assert not os.path.exists(os.path.join(db_dir, minimal_wallet)), "There is already a minimal encrypted copy at %s/%s, exiting"%(db_dir, minimal_wallet)
		kds = BCDataStream()
		vds = BCDataStream()
		encrypted_keys = []
		mkey = None
		for (key, value) in db.items():
			d = Bdict({})
			kds.clear(); kds.write(key)
			vds.clear(); vds.write(value)
			typ = kds.read_string()
			if typ == b'mkey':
				mkey = (key, value)
			if typ != b'ckey':continue
			d['public_key'] = kds.read_bytes(kds.read_compact_size())
			d['__key__'] = key
			d['__value__'] = value
			encrypted_keys.append(d)
		db.close()
		print('''
	Before creating a safe partial wallet you need to check the balance of the following addresses.
	You may check the balance on your wallet or using an online block explorer.
	Just hit Enter if the address is empty and write 'no' if not empty.

			''')
		for pbk in encrypted_keys[::-1]:
			p2pkh, p2wpkh, witaddr, _ = pubkey_info(pbk['public_key'], network)
			for addr in [p2pkh, p2wpkh, witaddr]:
				has_balance = raw_input(addr + ': ') != ''
				if has_balance:
					print('')
					break
			if not has_balance:
				if raw_input("\nAre you REALLY sure the 3 addresses above have an empty balance? (type 'YES') ") == 'YES':
					output_db = open_wallet(db_env, minimal_wallet, True)
					output_db.put(*mkey)
					output_db.put(pbk['__key__'], pbk['__value__'])
					output_db.close()
					print('\nMinimal wallet written at %s'%minimal_wallet)
					exit()
				else:
					print('\nYou need to input zero character only when the balance is empty, exiting')
					exit()
		print("\nError: all your addresses seem to be used, pywallet can't create a safe minimal wallet to share")
		exit()

	read_wallet(json_db, db_env, wallet_name, True, True, "", not(options.dumpbalance is None))

	if json_db.get('minversion', 99999999) > max_version:
		print("Version mismatch (must be <= %d)" % max_version)
		#exit(1)

	if options.find_address:
		addr_data = filter(lambda x:x["addr"] == options.find_address, json_db["keys"]+json_db["pool"])
		print(json.dumps(list(addr_data), sort_keys=True, indent=4))
		exit()

	if options.dump:
		if options.dumpformat == 'addr':
			addrs = list(map(lambda x:x["addr"], json_db["keys"]+json_db["pool"]))
			json_db = addrs
		wallet = json.dumps(json_db, sort_keys=True, indent=4)
		print(wallet)
		exit()
	elif options.key:
		if json_db['version'] > max_version:
			print("Version mismatch (must be <= %d)" % max_version)
		elif options.key in private_keys or options.key in private_hex_keys:
			print("Already exists")
		else:
			db = open_wallet(db_env, wallet_name, writable=True)

			if importprivkey(db, options.key, options.label, options.reserve):
				print("Imported successfully")
			else:
				print("Bad private key")

			db.close()
		exit()