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electrum-bitcoinprivate
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separate files for wallet and interface

This commit is contained in:
thomasv 2012-01-19 17:11:36 +01:00
parent 901d8db9c2
commit 128d39d52e
3 changed files with 774 additions and 732 deletions
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736
client/electrum.py
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@ -16,741 +16,13 @@
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import sys, base64, os, re, hashlib, socket, getpass, copy, operator, ast, random
from decimal import Decimal
try:
import ecdsa
from ecdsa.util import string_to_number, number_to_string
except:
print "python-ecdsa does not seem to be installed. Try 'sudo easy_install ecdsa'"
sys.exit(1)
try:
import aes
except:
print "AES does not seem to be installed. Try 'sudo easy_install slowaes'"
sys.exit(1)
############ functions from pywallet #####################
addrtype = 0
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):
h160 = hash_160(public_key)
return hash_160_to_bc_address(h160)
def hash_160_to_bc_address(h160):
vh160 = chr(addrtype) + 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'
__b58base = len(__b58chars)
def b58encode(v):
""" encode v, which is a string of bytes, to base58.
"""
long_value = 0L
for (i, c) in enumerate(v[::-1]):
long_value += (256**i) * ord(c)
result = ''
while long_value >= __b58base:
div, mod = divmod(long_value, __b58base)
result = __b58chars[mod] + result
long_value = div
result = __b58chars[long_value] + result
# Bitcoin does a little leading-zero-compression:
# leading 0-bytes in the input become leading-1s
nPad = 0
for c in v:
if c == '\0': nPad += 1
else: break
return (__b58chars[0]*nPad) + result
def b58decode(v, length):
""" decode v into a string of len bytes
"""
long_value = 0L
for (i, c) in enumerate(v[::-1]):
long_value += __b58chars.find(c) * (__b58base**i)
result = ''
while long_value >= 256:
div, mod = divmod(long_value, 256)
result = chr(mod) + result
long_value = div
result = chr(long_value) + result
nPad = 0
for c in v:
if c == __b58chars[0]: nPad += 1
else: break
result = chr(0)*nPad + result
if length is not None and len(result) != length:
return None
return result
def Hash(data):
return hashlib.sha256(hashlib.sha256(data).digest()).digest()
def EncodeBase58Check(vchIn):
hash = Hash(vchIn)
return b58encode(vchIn + hash[0:4])
def DecodeBase58Check(psz):
vchRet = b58decode(psz, None)
key = vchRet[0:-4]
csum = vchRet[-4:]
hash = Hash(key)
cs32 = hash[0:4]
if cs32 != csum:
return None
else:
return key
def PrivKeyToSecret(privkey):
return privkey[9:9+32]
def SecretToASecret(secret):
vchIn = chr(addrtype+128) + secret
return EncodeBase58Check(vchIn)
def ASecretToSecret(key):
vch = DecodeBase58Check(key)
if vch and vch[0] == chr(addrtype+128):
return vch[1:]
else:
return False
########### end pywallet functions #######################
def int_to_hex(i, length=1):
s = hex(i)[2:].rstrip('L')
s = "0"*(2*length - len(s)) + s
return s.decode('hex')[::-1].encode('hex')
# URL decode
_ud = re.compile('%([0-9a-hA-H]{2})', re.MULTILINE)
urldecode = lambda x: _ud.sub(lambda m: chr(int(m.group(1), 16)), x)
# AES
EncodeAES = lambda secret, s: base64.b64encode(aes.encryptData(secret,s))
DecodeAES = lambda secret, e: aes.decryptData(secret, base64.b64decode(e))
# secp256k1, http://www.oid-info.com/get/1.3.132.0.10
_p = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2FL
_r = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141L
_b = 0x0000000000000000000000000000000000000000000000000000000000000007L
_a = 0x0000000000000000000000000000000000000000000000000000000000000000L
_Gx = 0x79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798L
_Gy = 0x483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8L
curve_secp256k1 = ecdsa.ellipticcurve.CurveFp( _p, _a, _b )
generator_secp256k1 = ecdsa.ellipticcurve.Point( curve_secp256k1, _Gx, _Gy, _r )
oid_secp256k1 = (1,3,132,0,10)
SECP256k1 = ecdsa.curves.Curve("SECP256k1", curve_secp256k1, generator_secp256k1, oid_secp256k1 )
def filter(s):
out = re.sub('( [^\n]*|)\n','',s)
out = out.replace(' ','')
out = out.replace('\n','')
return out
def raw_tx( inputs, outputs, for_sig = None ):
s = int_to_hex(1,4) + ' version\n'
s += int_to_hex( len(inputs) ) + ' number of inputs\n'
for i in range(len(inputs)):
_, _, p_hash, p_index, p_script, pubkey, sig = inputs[i]
s += p_hash.decode('hex')[::-1].encode('hex') + ' prev hash\n'
s += int_to_hex(p_index,4) + ' prev index\n'
if for_sig is None:
sig = sig + chr(1) # hashtype
script = int_to_hex( len(sig)) + ' push %d bytes\n'%len(sig)
script += sig.encode('hex') + ' sig\n'
pubkey = chr(4) + pubkey
script += int_to_hex( len(pubkey)) + ' push %d bytes\n'%len(pubkey)
script += pubkey.encode('hex') + ' pubkey\n'
elif for_sig==i:
script = p_script + ' scriptsig \n'
else:
script=''
s += int_to_hex( len(filter(script))/2 ) + ' script length \n'
s += script
s += "ffffffff" + ' sequence\n'
s += int_to_hex( len(outputs) ) + ' number of outputs\n'
for output in outputs:
addr, amount = output
s += int_to_hex( amount, 8) + ' amount: %d\n'%amount
script = '76a9' # op_dup, op_hash_160
script += '14' # push 0x14 bytes
script += bc_address_to_hash_160(addr).encode('hex')
script += '88ac' # op_equalverify, op_checksig
s += int_to_hex( len(filter(script))/2 ) + ' script length \n'
s += script + ' script \n'
s += int_to_hex(0,4) # lock time
if for_sig is not None: s += int_to_hex(1, 4) # hash type
return s
from version import ELECTRUM_VERSION, SEED_VERSION
class Interface:
def __init__(self):
self.servers = ['ecdsa.org','electrum.novit.ro'] # list of default servers
self.host = random.choice( self.servers ) # random choice when the wallet is created
self.rtime = 0
self.blocks = 0
self.message = ''
self.set_port(50000)
self.is_connected = False
def set_port(self, port_number):
self.port = port_number
if self.use_http():
self.handler = self.http_json_handler
else:
self.handler = self.native_handler
def use_http(self):
return self.port in [80,81,8080,8081]
def native_handler(self, method, params = ''):
import time
cmds = {'session.new':'new_session',
'peers':'peers',
'session.poll':'poll',
'session.update':'update_session',
'blockchain.transaction.broadcast':'tx',
'blockchain.address.get_history':'h'
}
cmd = cmds[method]
if type(params) != type(''): params = repr( params )
t1 = time.time()
request = repr ( (cmd, params) ) + "#"
s = socket.socket( socket.AF_INET, socket.SOCK_STREAM)
s.connect(( self.host, self.port))
s.send( request )
out = ''
while 1:
msg = s.recv(1024)
if msg: out += msg
else: break
s.close()
self.rtime = time.time() - t1
self.is_connected = True
if cmd in[ 'peers','h']:
out = ast.literal_eval( out )
return out
def http_json_handler(self, method, params = []):
import urllib2, json, time
if type(params) != type([]): params = [ params ]
t1 = time.time()
data = { 'method':method, 'id':'jsonrpc', 'params':params }
data_json = json.dumps(data)
host = 'http://%s:%d'%(self.host,self.port)
req = urllib2.Request(host, data_json, {'content-type': 'application/json'})
response_stream = urllib2.urlopen(req)
response = json.loads( response_stream.read() )
out = response.get('result')
if not out:
print response
self.rtime = time.time() - t1
self.is_connected = True
return out
def send_tx(self, data):
out = self.handler('blockchain.transaction.broadcast', data )
return out
def retrieve_history(self, address):
out = self.handler('blockchain.address.get_history', address )
return out
def poll(self):
out = self.handler('session.poll', self.session_id )
blocks, changed_addr = ast.literal_eval( out )
if blocks == -1: raise BaseException("session not found")
self.blocks = int(blocks)
return changed_addr
def new_session(self, addresses, version):
out = self.handler('session.new', [ version, addresses ] )
self.session_id, self.message = ast.literal_eval( out )
def update_session(self, addresses):
out = self.handler('session.update', [ self.session_id, addresses ] )
return out
def get_servers(self):
out = self.handler('peers')
self.servers = map( lambda x:x[1], out )
class Wallet:
def __init__(self, interface):
self.electrum_version = ELECTRUM_VERSION
self.seed_version = SEED_VERSION
self.gap_limit = 5 # configuration
self.fee = 100000
self.master_public_key = ''
# saved fields
self.use_encryption = False
self.addresses = [] # receiving addresses visible for user
self.change_addresses = [] # addresses used as change
self.seed = '' # encrypted
self.status = {} # current status of addresses
self.history = {}
self.labels = {} # labels for addresses and transactions
self.addressbook = [] # outgoing addresses, for payments
# not saved
self.tx_history = {}
self.imported_keys = {}
self.interface = interface
def set_path(self, wallet_path):
if wallet_path is not None:
self.path = wallet_path
else:
# backward compatibility: look for wallet file in the default data directory
if "HOME" in os.environ:
wallet_dir = os.path.join( os.environ["HOME"], '.electrum')
elif "LOCALAPPDATA" in os.environ:
wallet_dir = os.path.join( os.environ["LOCALAPPDATA"], 'Electrum' )
elif "APPDATA" in os.environ:
wallet_dir = os.path.join( os.environ["APPDATA"], 'Electrum' )
else:
raise BaseException("No home directory found in environment variables.")
if not os.path.exists( wallet_dir ): os.mkdir( wallet_dir )
self.path = os.path.join( wallet_dir, 'electrum.dat' )
def import_key(self, keypair, password):
address, key = keypair.split(':')
if not self.is_valid(address): return False
b = ASecretToSecret( key )
if not b: return False
secexp = int( b.encode('hex'), 16)
private_key = ecdsa.SigningKey.from_secret_exponent( secexp, curve=SECP256k1 )
# sanity check
public_key = private_key.get_verifying_key()
if not address == public_key_to_bc_address( '04'.decode('hex') + public_key.to_string() ): return False
self.imported_keys[address] = self.pw_encode( key, password )
return True
def new_seed(self, password):
seed = "%032x"%ecdsa.util.randrange( pow(2,128) )
self.init_mpk(seed)
# encrypt
self.seed = wallet.pw_encode( seed, password )
def init_mpk(self,seed):
# public key
curve = SECP256k1
secexp = self.stretch_key(seed)
master_private_key = ecdsa.SigningKey.from_secret_exponent( secexp, curve = SECP256k1 )
self.master_public_key = master_private_key.get_verifying_key().to_string()
def all_addresses(self):
return self.addresses + self.change_addresses + self.imported_keys.keys()
def is_mine(self, address):
return address in self.all_addresses()
def is_change(self, address):
return address in self.change_addresses
def is_valid(self,addr):
ADDRESS_RE = re.compile('[1-9A-HJ-NP-Za-km-z]{26,}\\Z')
if not ADDRESS_RE.match(addr): return False
try:
h = bc_address_to_hash_160(addr)
except:
return False
return addr == hash_160_to_bc_address(h)
def stretch_key(self,seed):
oldseed = seed
for i in range(100000):
seed = hashlib.sha256(seed + oldseed).digest()
return string_to_number( seed )
def get_sequence(self,n,for_change):
return string_to_number( Hash( "%d:%d:"%(n,for_change) + self.master_public_key ) )
def get_private_key2(self, address, password):
""" Privatekey(type,n) = Master_private_key + H(n|S|type) """
order = generator_secp256k1.order()
if address in self.imported_keys.keys():
b = self.pw_decode( self.imported_keys[address], password )
b = ASecretToSecret( b )
secexp = int( b.encode('hex'), 16)
else:
if address in self.addresses:
n = self.addresses.index(address)
for_change = False
elif address in self.change_addresses:
n = self.change_addresses.index(address)
for_change = True
else:
raise BaseException("unknown address")
seed = self.pw_decode( self.seed, password)
secexp = self.stretch_key(seed)
secexp = ( secexp + self.get_sequence(n,for_change) ) % order
pk = number_to_string(secexp,order)
return pk
def create_new_address2(self, for_change):
""" Publickey(type,n) = Master_public_key + H(n|S|type)*point """
curve = SECP256k1
n = len(self.change_addresses) if for_change else len(self.addresses)
z = self.get_sequence(n,for_change)
master_public_key = ecdsa.VerifyingKey.from_string( self.master_public_key, curve = SECP256k1 )
pubkey_point = master_public_key.pubkey.point + z*curve.generator
public_key2 = ecdsa.VerifyingKey.from_public_point( pubkey_point, curve = SECP256k1 )
address = public_key_to_bc_address( '04'.decode('hex') + public_key2.to_string() )
if for_change:
self.change_addresses.append(address)
else:
self.addresses.append(address)
# updates
print address
self.history[address] = h = self.interface.retrieve_history(address)
self.status[address] = h[-1]['blk_hash'] if h else None
return address
def synchronize(self):
is_new = False
while True:
if self.change_addresses == []:
self.create_new_address2(True)
is_new = True
continue
a = self.change_addresses[-1]
if self.history.get(a):
self.create_new_address2(True)
is_new = True
else:
break
n = self.gap_limit
while True:
if len(self.addresses) < n:
self.create_new_address2(False)
is_new = True
continue
if map( lambda a: self.history.get(a), self.addresses[-n:] ) == n*[[]]:
break
else:
self.create_new_address2(False)
is_new = True
def is_found(self):
return (len(self.change_addresses) > 1 ) or ( len(self.addresses) > self.gap_limit )
def fill_addressbook(self):
for tx in self.tx_history.values():
if tx['value']<0:
for i in tx['outputs']:
if not self.is_mine(i) and i not in self.addressbook:
self.addressbook.append(i)
# redo labels
self.update_tx_labels()
def save(self):
s = {
'seed_version':self.seed_version,
'use_encryption':self.use_encryption,
'master_public_key': self.master_public_key.encode('hex'),
'fee':self.fee,
'host':self.interface.host,
'port':self.interface.port,
'blocks':self.interface.blocks,
'seed':self.seed,
'addresses':self.addresses,
'change_addresses':self.change_addresses,
'status':self.status,
'history':self.history,
'labels':self.labels,
'contacts':self.addressbook,
'imported_keys':self.imported_keys,
}
f = open(self.path,"w")
f.write( repr(s) )
f.close()
def read(self):
upgrade_msg = """This wallet seed is deprecated. Please run upgrade.py for a diagnostic."""
try:
f = open(self.path,"r")
data = f.read()
f.close()
except:
return False
try:
d = ast.literal_eval( data )
self.seed_version = d.get('seed_version')
self.master_public_key = d.get('master_public_key').decode('hex')
self.use_encryption = d.get('use_encryption')
self.fee = int( d.get('fee') )
self.interface.host = d.get('host')
self.interface.set_port( d.get('port') )
self.interface.blocks = d.get('blocks')
self.seed = d.get('seed')
self.addresses = d.get('addresses')
self.change_addresses = d.get('change_addresses')
self.status = d.get('status')
self.history = d.get('history')
self.labels = d.get('labels')
self.addressbook = d.get('contacts')
self.imported_keys = d.get('imported_keys',{})
except:
raise BaseException(upgrade_msg)
self.update_tx_history()
if self.seed_version != SEED_VERSION:
raise BaseException(upgrade_msg)
return True
def get_new_address(self):
n = 0
for addr in self.addresses[-self.gap_limit:]:
if not self.history.get(addr):
n = n + 1
if n < self.gap_limit:
new_address = self.create_new_address2(False)
self.history[new_address] = [] #get from server
return True, new_address
else:
return False, "The last %d addresses in your list have never been used. You should use them first, or increase the allowed gap size in your preferences. "%self.gap_limit
def get_addr_balance(self, addr):
if self.is_mine(addr):
h = self.history.get(addr)
else:
h = self.interface.retrieve_history(addr)
if not h: return 0,0
c = u = 0
for item in h:
v = item['value']
if item['height']:
c += v
else:
u += v
return c, u
def get_balance(self):
conf = unconf = 0
for addr in self.all_addresses():
c, u = self.get_addr_balance(addr)
conf += c
unconf += u
return conf, unconf
def update(self):
is_new = False
changed_addresses = self.interface.poll()
for addr, blk_hash in changed_addresses.items():
if self.status.get(addr) != blk_hash:
print "updating history for", addr
self.history[addr] = self.interface.retrieve_history(addr)
self.status[addr] = blk_hash
is_new = True
if is_new:
self.synchronize()
self.update_tx_history()
self.save()
return True
else:
return False
def choose_tx_inputs( self, amount, fixed_fee ):
""" todo: minimize tx size """
total = 0
fee = self.fee if fixed_fee is None else fixed_fee
coins = []
for addr in self.all_addresses():
h = self.history.get(addr)
if h is None: continue
for item in h:
if item.get('raw_scriptPubKey'):
coins.append( (addr,item))
coins = sorted( coins, key = lambda x: x[1]['nTime'] )
inputs = []
for c in coins:
addr, item = c
v = item.get('value')
total += v
inputs.append((addr, v, item['tx_hash'], item['pos'], item['raw_scriptPubKey'], None, None) )
fee = self.fee*len(inputs) if fixed_fee is None else fixed_fee
if total >= amount + fee: break
else:
#print "not enough funds: %d %d"%(total, fee)
inputs = []
return inputs, total, fee
def choose_tx_outputs( self, to_addr, amount, fee, total ):
outputs = [ (to_addr, amount) ]
change_amount = total - ( amount + fee )
if change_amount != 0:
# normally, the update thread should ensure that the last change address is unused
outputs.append( ( self.change_addresses[-1], change_amount) )
return outputs
def sign_inputs( self, inputs, outputs, password ):
s_inputs = []
for i in range(len(inputs)):
addr, v, p_hash, p_pos, p_scriptPubKey, _, _ = inputs[i]
private_key = ecdsa.SigningKey.from_string( self.get_private_key2(addr, password), curve = SECP256k1 )
public_key = private_key.get_verifying_key()
pubkey = public_key.to_string()
tx = filter( raw_tx( inputs, outputs, for_sig = i ) )
sig = private_key.sign_digest( Hash( tx.decode('hex') ), sigencode = ecdsa.util.sigencode_der )
assert public_key.verify_digest( sig, Hash( tx.decode('hex') ), sigdecode = ecdsa.util.sigdecode_der)
s_inputs.append( (addr, v, p_hash, p_pos, p_scriptPubKey, pubkey, sig) )
return s_inputs
def pw_encode(self, s, password):
if password:
secret = Hash(password)
return EncodeAES(secret, s)
else:
return s
def pw_decode(self, s, password):
if password is not None:
secret = Hash(password)
d = DecodeAES(secret, s)
if s == self.seed:
try:
d.decode('hex')
except:
raise BaseException("Invalid password")
return d
else:
return s
def get_tx_history(self):
lines = self.tx_history.values()
lines = sorted(lines, key=operator.itemgetter("nTime"))
return lines
def update_tx_history(self):
self.tx_history= {}
for addr in self.all_addresses():
h = self.history.get(addr)
if h is None: continue
for tx in h:
tx_hash = tx['tx_hash']
line = self.tx_history.get(tx_hash)
if not line:
self.tx_history[tx_hash] = copy.copy(tx)
line = self.tx_history.get(tx_hash)
else:
line['value'] += tx['value']
if line['height'] == 0:
line['nTime'] = 1e12
self.update_tx_labels()
def update_tx_labels(self):
for tx in self.tx_history.values():
default_label = ''
if tx['value']<0:
for o_addr in tx['outputs']:
if not self.is_change(o_addr):
dest_label = self.labels.get(o_addr)
if dest_label:
default_label = 'to: ' + dest_label
else:
default_label = 'to: ' + o_addr
else:
for o_addr in tx['outputs']:
if self.is_mine(o_addr) and not self.is_change(o_addr):
dest_label = self.labels.get(o_addr)
if dest_label:
default_label = 'at: ' + dest_label
else:
default_label = 'at: ' + o_addr
tx['default_label'] = default_label
def mktx(self, to_address, amount, label, password, fee=None):
if not self.is_valid(to_address):
raise BaseException("Invalid address")
inputs, total, fee = wallet.choose_tx_inputs( amount, fee )
if not inputs:
raise BaseException("Not enough funds")
outputs = wallet.choose_tx_outputs( to_address, amount, fee, total )
s_inputs = wallet.sign_inputs( inputs, outputs, password )
tx = filter( raw_tx( s_inputs, outputs ) )
if to_address not in self.addressbook:
self.addressbook.append(to_address)
if label:
tx_hash = Hash(tx.decode('hex') )[::-1].encode('hex')
wallet.labels[tx_hash] = label
wallet.save()
return tx
def sendtx(self, tx):
tx_hash = Hash(tx.decode('hex') )[::-1].encode('hex')
out = self.interface.send_tx(tx)
if out != tx_hash:
return False, "error: " + out
return True, out
import re,sys
from optparse import OptionParser
from wallet import Wallet
from interface import Interface
if __name__ == '__main__':
known_commands = ['help', 'validateaddress', 'balance', 'contacts', 'create', 'payto', 'sendtx', 'password', 'newaddress', 'addresses', 'history', 'label', 'gui', 'mktx','seed','import']

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@ -0,0 +1,112 @@
#!/usr/bin/env python
#
# Electrum - lightweight Bitcoin client
# Copyright (C) 2011 thomasv@gitorious
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import random, socket, ast
class Interface:
def __init__(self):
self.servers = ['ecdsa.org','electrum.novit.ro'] # list of default servers
self.host = random.choice( self.servers ) # random choice when the wallet is created
self.rtime = 0
self.blocks = 0
self.message = ''
self.set_port(50000)
self.is_connected = False
def set_port(self, port_number):
self.port = port_number
if self.use_http():
self.handler = self.http_json_handler
else:
self.handler = self.native_handler
def use_http(self):
return self.port in [80,81,8080,8081]
def native_handler(self, method, params = ''):
import time
cmds = {'session.new':'new_session',
'peers':'peers',
'session.poll':'poll',
'session.update':'update_session',
'blockchain.transaction.broadcast':'tx',
'blockchain.address.get_history':'h'
}
cmd = cmds[method]
if type(params) != type(''): params = repr( params )
t1 = time.time()
request = repr ( (cmd, params) ) + "#"
s = socket.socket( socket.AF_INET, socket.SOCK_STREAM)
s.connect(( self.host, self.port))
s.send( request )
out = ''
while 1:
msg = s.recv(1024)
if msg: out += msg
else: break
s.close()
self.rtime = time.time() - t1
self.is_connected = True
if cmd in[ 'peers','h']:
out = ast.literal_eval( out )
return out
def http_json_handler(self, method, params = []):
import urllib2, json, time
if type(params) != type([]): params = [ params ]
t1 = time.time()
data = { 'method':method, 'id':'jsonrpc', 'params':params }
data_json = json.dumps(data)
host = 'http://%s:%d'%(self.host,self.port)
req = urllib2.Request(host, data_json, {'content-type': 'application/json'})
response_stream = urllib2.urlopen(req)
response = json.loads( response_stream.read() )
out = response.get('result')
if not out:
print response
self.rtime = time.time() - t1
self.is_connected = True
return out
def send_tx(self, data):
out = self.handler('blockchain.transaction.broadcast', data )
return out
def retrieve_history(self, address):
out = self.handler('blockchain.address.get_history', address )
return out
def poll(self):
out = self.handler('session.poll', self.session_id )
blocks, changed_addr = ast.literal_eval( out )
if blocks == -1: raise BaseException("session not found")
self.blocks = int(blocks)
return changed_addr
def new_session(self, addresses, version):
out = self.handler('session.new', [ version, addresses ] )
self.session_id, self.message = ast.literal_eval( out )
def update_session(self, addresses):
out = self.handler('session.update', [ self.session_id, addresses ] )
return out
def get_servers(self):
out = self.handler('peers')
self.servers = map( lambda x:x[1], out )

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#!/usr/bin/env python
#
# Electrum - lightweight Bitcoin client
# Copyright (C) 2011 thomasv@gitorious
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import sys, base64, os, re, hashlib, socket, getpass, copy, operator, ast, random
from decimal import Decimal
try:
import ecdsa
from ecdsa.util import string_to_number, number_to_string
except:
print "python-ecdsa does not seem to be installed. Try 'sudo easy_install ecdsa'"
sys.exit(1)
try:
import aes
except:
print "AES does not seem to be installed. Try 'sudo easy_install slowaes'"
sys.exit(1)
############ functions from pywallet #####################
addrtype = 0
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):
h160 = hash_160(public_key)
return hash_160_to_bc_address(h160)
def hash_160_to_bc_address(h160):
vh160 = chr(addrtype) + 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'
__b58base = len(__b58chars)
def b58encode(v):
""" encode v, which is a string of bytes, to base58.
"""
long_value = 0L
for (i, c) in enumerate(v[::-1]):
long_value += (256**i) * ord(c)
result = ''
while long_value >= __b58base:
div, mod = divmod(long_value, __b58base)
result = __b58chars[mod] + result
long_value = div
result = __b58chars[long_value] + result
# Bitcoin does a little leading-zero-compression:
# leading 0-bytes in the input become leading-1s
nPad = 0
for c in v:
if c == '\0': nPad += 1
else: break
return (__b58chars[0]*nPad) + result
def b58decode(v, length):
""" decode v into a string of len bytes
"""
long_value = 0L
for (i, c) in enumerate(v[::-1]):
long_value += __b58chars.find(c) * (__b58base**i)
result = ''
while long_value >= 256:
div, mod = divmod(long_value, 256)
result = chr(mod) + result
long_value = div
result = chr(long_value) + result
nPad = 0
for c in v:
if c == __b58chars[0]: nPad += 1
else: break
result = chr(0)*nPad + result
if length is not None and len(result) != length:
return None
return result
def Hash(data):
return hashlib.sha256(hashlib.sha256(data).digest()).digest()
def EncodeBase58Check(vchIn):
hash = Hash(vchIn)
return b58encode(vchIn + hash[0:4])
def DecodeBase58Check(psz):
vchRet = b58decode(psz, None)
key = vchRet[0:-4]
csum = vchRet[-4:]
hash = Hash(key)
cs32 = hash[0:4]
if cs32 != csum:
return None
else:
return key
def PrivKeyToSecret(privkey):
return privkey[9:9+32]
def SecretToASecret(secret):
vchIn = chr(addrtype+128) + secret
return EncodeBase58Check(vchIn)
def ASecretToSecret(key):
vch = DecodeBase58Check(key)
if vch and vch[0] == chr(addrtype+128):
return vch[1:]
else:
return False
########### end pywallet functions #######################
def int_to_hex(i, length=1):
s = hex(i)[2:].rstrip('L')
s = "0"*(2*length - len(s)) + s
return s.decode('hex')[::-1].encode('hex')
# URL decode
_ud = re.compile('%([0-9a-hA-H]{2})', re.MULTILINE)
urldecode = lambda x: _ud.sub(lambda m: chr(int(m.group(1), 16)), x)
# AES
EncodeAES = lambda secret, s: base64.b64encode(aes.encryptData(secret,s))
DecodeAES = lambda secret, e: aes.decryptData(secret, base64.b64decode(e))
# secp256k1, http://www.oid-info.com/get/1.3.132.0.10
_p = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2FL
_r = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141L
_b = 0x0000000000000000000000000000000000000000000000000000000000000007L
_a = 0x0000000000000000000000000000000000000000000000000000000000000000L
_Gx = 0x79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798L
_Gy = 0x483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8L
curve_secp256k1 = ecdsa.ellipticcurve.CurveFp( _p, _a, _b )
generator_secp256k1 = ecdsa.ellipticcurve.Point( curve_secp256k1, _Gx, _Gy, _r )
oid_secp256k1 = (1,3,132,0,10)
SECP256k1 = ecdsa.curves.Curve("SECP256k1", curve_secp256k1, generator_secp256k1, oid_secp256k1 )
def filter(s):
out = re.sub('( [^\n]*|)\n','',s)
out = out.replace(' ','')
out = out.replace('\n','')
return out
def raw_tx( inputs, outputs, for_sig = None ):
s = int_to_hex(1,4) + ' version\n'
s += int_to_hex( len(inputs) ) + ' number of inputs\n'
for i in range(len(inputs)):
_, _, p_hash, p_index, p_script, pubkey, sig = inputs[i]
s += p_hash.decode('hex')[::-1].encode('hex') + ' prev hash\n'
s += int_to_hex(p_index,4) + ' prev index\n'
if for_sig is None:
sig = sig + chr(1) # hashtype
script = int_to_hex( len(sig)) + ' push %d bytes\n'%len(sig)
script += sig.encode('hex') + ' sig\n'
pubkey = chr(4) + pubkey
script += int_to_hex( len(pubkey)) + ' push %d bytes\n'%len(pubkey)
script += pubkey.encode('hex') + ' pubkey\n'
elif for_sig==i:
script = p_script + ' scriptsig \n'
else:
script=''
s += int_to_hex( len(filter(script))/2 ) + ' script length \n'
s += script
s += "ffffffff" + ' sequence\n'
s += int_to_hex( len(outputs) ) + ' number of outputs\n'
for output in outputs:
addr, amount = output
s += int_to_hex( amount, 8) + ' amount: %d\n'%amount
script = '76a9' # op_dup, op_hash_160
script += '14' # push 0x14 bytes
script += bc_address_to_hash_160(addr).encode('hex')
script += '88ac' # op_equalverify, op_checksig
s += int_to_hex( len(filter(script))/2 ) + ' script length \n'
s += script + ' script \n'
s += int_to_hex(0,4) # lock time
if for_sig is not None: s += int_to_hex(1, 4) # hash type
return s
from version import ELECTRUM_VERSION, SEED_VERSION
class Wallet:
def __init__(self, interface):
self.electrum_version = ELECTRUM_VERSION
self.seed_version = SEED_VERSION
self.gap_limit = 5 # configuration
self.fee = 100000
self.master_public_key = ''
# saved fields
self.use_encryption = False
self.addresses = [] # receiving addresses visible for user
self.change_addresses = [] # addresses used as change
self.seed = '' # encrypted
self.status = {} # current status of addresses
self.history = {}
self.labels = {} # labels for addresses and transactions
self.addressbook = [] # outgoing addresses, for payments
# not saved
self.tx_history = {}
self.imported_keys = {}
self.interface = interface
def set_path(self, wallet_path):
if wallet_path is not None:
self.path = wallet_path
else:
# backward compatibility: look for wallet file in the default data directory
if "HOME" in os.environ:
wallet_dir = os.path.join( os.environ["HOME"], '.electrum')
elif "LOCALAPPDATA" in os.environ:
wallet_dir = os.path.join( os.environ["LOCALAPPDATA"], 'Electrum' )
elif "APPDATA" in os.environ:
wallet_dir = os.path.join( os.environ["APPDATA"], 'Electrum' )
else:
raise BaseException("No home directory found in environment variables.")
if not os.path.exists( wallet_dir ): os.mkdir( wallet_dir )
self.path = os.path.join( wallet_dir, 'electrum.dat' )
def import_key(self, keypair, password):
address, key = keypair.split(':')
if not self.is_valid(address): return False
b = ASecretToSecret( key )
if not b: return False
secexp = int( b.encode('hex'), 16)
private_key = ecdsa.SigningKey.from_secret_exponent( secexp, curve=SECP256k1 )
# sanity check
public_key = private_key.get_verifying_key()
if not address == public_key_to_bc_address( '04'.decode('hex') + public_key.to_string() ): return False
self.imported_keys[address] = self.pw_encode( key, password )
return True
def new_seed(self, password):
seed = "%032x"%ecdsa.util.randrange( pow(2,128) )
self.init_mpk(seed)
# encrypt
self.seed = wallet.pw_encode( seed, password )
def init_mpk(self,seed):
# public key
curve = SECP256k1
secexp = self.stretch_key(seed)
master_private_key = ecdsa.SigningKey.from_secret_exponent( secexp, curve = SECP256k1 )
self.master_public_key = master_private_key.get_verifying_key().to_string()
def all_addresses(self):
return self.addresses + self.change_addresses + self.imported_keys.keys()
def is_mine(self, address):
return address in self.all_addresses()
def is_change(self, address):
return address in self.change_addresses
def is_valid(self,addr):
ADDRESS_RE = re.compile('[1-9A-HJ-NP-Za-km-z]{26,}\\Z')
if not ADDRESS_RE.match(addr): return False
try:
h = bc_address_to_hash_160(addr)
except:
return False
return addr == hash_160_to_bc_address(h)
def stretch_key(self,seed):
oldseed = seed
for i in range(100000):
seed = hashlib.sha256(seed + oldseed).digest()
return string_to_number( seed )
def get_sequence(self,n,for_change):
return string_to_number( Hash( "%d:%d:"%(n,for_change) + self.master_public_key ) )
def get_private_key2(self, address, password):
""" Privatekey(type,n) = Master_private_key + H(n|S|type) """
order = generator_secp256k1.order()
if address in self.imported_keys.keys():
b = self.pw_decode( self.imported_keys[address], password )
b = ASecretToSecret( b )
secexp = int( b.encode('hex'), 16)
else:
if address in self.addresses:
n = self.addresses.index(address)
for_change = False
elif address in self.change_addresses:
n = self.change_addresses.index(address)
for_change = True
else:
raise BaseException("unknown address")
seed = self.pw_decode( self.seed, password)
secexp = self.stretch_key(seed)
secexp = ( secexp + self.get_sequence(n,for_change) ) % order
pk = number_to_string(secexp,order)
return pk
def create_new_address2(self, for_change):
""" Publickey(type,n) = Master_public_key + H(n|S|type)*point """
curve = SECP256k1
n = len(self.change_addresses) if for_change else len(self.addresses)
z = self.get_sequence(n,for_change)
master_public_key = ecdsa.VerifyingKey.from_string( self.master_public_key, curve = SECP256k1 )
pubkey_point = master_public_key.pubkey.point + z*curve.generator
public_key2 = ecdsa.VerifyingKey.from_public_point( pubkey_point, curve = SECP256k1 )
address = public_key_to_bc_address( '04'.decode('hex') + public_key2.to_string() )
if for_change:
self.change_addresses.append(address)
else:
self.addresses.append(address)
# updates
print address
self.history[address] = h = self.interface.retrieve_history(address)
self.status[address] = h[-1]['blk_hash'] if h else None
return address
def synchronize(self):
is_new = False
while True:
if self.change_addresses == []:
self.create_new_address2(True)
is_new = True
continue
a = self.change_addresses[-1]
if self.history.get(a):
self.create_new_address2(True)
is_new = True
else:
break
n = self.gap_limit
while True:
if len(self.addresses) < n:
self.create_new_address2(False)
is_new = True
continue
if map( lambda a: self.history.get(a), self.addresses[-n:] ) == n*[[]]:
break
else:
self.create_new_address2(False)
is_new = True
def is_found(self):
return (len(self.change_addresses) > 1 ) or ( len(self.addresses) > self.gap_limit )
def fill_addressbook(self):
for tx in self.tx_history.values():
if tx['value']<0:
for i in tx['outputs']:
if not self.is_mine(i) and i not in self.addressbook:
self.addressbook.append(i)
# redo labels
self.update_tx_labels()
def save(self):
s = {
'seed_version':self.seed_version,
'use_encryption':self.use_encryption,
'master_public_key': self.master_public_key.encode('hex'),
'fee':self.fee,
'host':self.interface.host,
'port':self.interface.port,
'blocks':self.interface.blocks,
'seed':self.seed,
'addresses':self.addresses,
'change_addresses':self.change_addresses,
'status':self.status,
'history':self.history,
'labels':self.labels,
'contacts':self.addressbook,
'imported_keys':self.imported_keys,
}
f = open(self.path,"w")
f.write( repr(s) )
f.close()
def read(self):
upgrade_msg = """This wallet seed is deprecated. Please run upgrade.py for a diagnostic."""
try:
f = open(self.path,"r")
data = f.read()
f.close()
except:
return False
try:
d = ast.literal_eval( data )
self.seed_version = d.get('seed_version')
self.master_public_key = d.get('master_public_key').decode('hex')
self.use_encryption = d.get('use_encryption')
self.fee = int( d.get('fee') )
self.interface.host = d.get('host')
self.interface.set_port( d.get('port') )
self.interface.blocks = d.get('blocks')
self.seed = d.get('seed')
self.addresses = d.get('addresses')
self.change_addresses = d.get('change_addresses')
self.status = d.get('status')
self.history = d.get('history')
self.labels = d.get('labels')
self.addressbook = d.get('contacts')
self.imported_keys = d.get('imported_keys',{})
except:
raise BaseException(upgrade_msg)
self.update_tx_history()
if self.seed_version != SEED_VERSION:
raise BaseException(upgrade_msg)
return True
def get_new_address(self):
n = 0
for addr in self.addresses[-self.gap_limit:]:
if not self.history.get(addr):
n = n + 1
if n < self.gap_limit:
new_address = self.create_new_address2(False)
self.history[new_address] = [] #get from server
return True, new_address
else:
return False, "The last %d addresses in your list have never been used. You should use them first, or increase the allowed gap size in your preferences. "%self.gap_limit
def get_addr_balance(self, addr):
if self.is_mine(addr):
h = self.history.get(addr)
else:
h = self.interface.retrieve_history(addr)
if not h: return 0,0
c = u = 0
for item in h:
v = item['value']
if item['height']:
c += v
else:
u += v
return c, u
def get_balance(self):
conf = unconf = 0
for addr in self.all_addresses():
c, u = self.get_addr_balance(addr)
conf += c
unconf += u
return conf, unconf
def update(self):
is_new = False
changed_addresses = self.interface.poll()
for addr, blk_hash in changed_addresses.items():
if self.status.get(addr) != blk_hash:
print "updating history for", addr
self.history[addr] = self.interface.retrieve_history(addr)
self.status[addr] = blk_hash
is_new = True
if is_new:
self.synchronize()
self.update_tx_history()
self.save()
return True
else:
return False
def choose_tx_inputs( self, amount, fixed_fee ):
""" todo: minimize tx size """
total = 0
fee = self.fee if fixed_fee is None else fixed_fee
coins = []
for addr in self.all_addresses():
h = self.history.get(addr)
if h is None: continue
for item in h:
if item.get('raw_scriptPubKey'):
coins.append( (addr,item))
coins = sorted( coins, key = lambda x: x[1]['nTime'] )
inputs = []
for c in coins:
addr, item = c
v = item.get('value')
total += v
inputs.append((addr, v, item['tx_hash'], item['pos'], item['raw_scriptPubKey'], None, None) )
fee = self.fee*len(inputs) if fixed_fee is None else fixed_fee
if total >= amount + fee: break
else:
#print "not enough funds: %d %d"%(total, fee)
inputs = []
return inputs, total, fee
def choose_tx_outputs( self, to_addr, amount, fee, total ):
outputs = [ (to_addr, amount) ]
change_amount = total - ( amount + fee )
if change_amount != 0:
# normally, the update thread should ensure that the last change address is unused
outputs.append( ( self.change_addresses[-1], change_amount) )
return outputs
def sign_inputs( self, inputs, outputs, password ):
s_inputs = []
for i in range(len(inputs)):
addr, v, p_hash, p_pos, p_scriptPubKey, _, _ = inputs[i]
private_key = ecdsa.SigningKey.from_string( self.get_private_key2(addr, password), curve = SECP256k1 )
public_key = private_key.get_verifying_key()
pubkey = public_key.to_string()
tx = filter( raw_tx( inputs, outputs, for_sig = i ) )
sig = private_key.sign_digest( Hash( tx.decode('hex') ), sigencode = ecdsa.util.sigencode_der )
assert public_key.verify_digest( sig, Hash( tx.decode('hex') ), sigdecode = ecdsa.util.sigdecode_der)
s_inputs.append( (addr, v, p_hash, p_pos, p_scriptPubKey, pubkey, sig) )
return s_inputs
def pw_encode(self, s, password):
if password:
secret = Hash(password)
return EncodeAES(secret, s)
else:
return s
def pw_decode(self, s, password):
if password is not None:
secret = Hash(password)
d = DecodeAES(secret, s)
if s == self.seed:
try:
d.decode('hex')
except:
raise BaseException("Invalid password")
return d
else:
return s
def get_tx_history(self):
lines = self.tx_history.values()
lines = sorted(lines, key=operator.itemgetter("nTime"))
return lines
def update_tx_history(self):
self.tx_history= {}
for addr in self.all_addresses():
h = self.history.get(addr)
if h is None: continue
for tx in h:
tx_hash = tx['tx_hash']
line = self.tx_history.get(tx_hash)
if not line:
self.tx_history[tx_hash] = copy.copy(tx)
line = self.tx_history.get(tx_hash)
else:
line['value'] += tx['value']
if line['height'] == 0:
line['nTime'] = 1e12
self.update_tx_labels()
def update_tx_labels(self):
for tx in self.tx_history.values():
default_label = ''
if tx['value']<0:
for o_addr in tx['outputs']:
if not self.is_change(o_addr):
dest_label = self.labels.get(o_addr)
if dest_label:
default_label = 'to: ' + dest_label
else:
default_label = 'to: ' + o_addr
else:
for o_addr in tx['outputs']:
if self.is_mine(o_addr) and not self.is_change(o_addr):
dest_label = self.labels.get(o_addr)
if dest_label:
default_label = 'at: ' + dest_label
else:
default_label = 'at: ' + o_addr
tx['default_label'] = default_label
def mktx(self, to_address, amount, label, password, fee=None):
if not self.is_valid(to_address):
raise BaseException("Invalid address")
inputs, total, fee = wallet.choose_tx_inputs( amount, fee )
if not inputs:
raise BaseException("Not enough funds")
outputs = wallet.choose_tx_outputs( to_address, amount, fee, total )
s_inputs = wallet.sign_inputs( inputs, outputs, password )
tx = filter( raw_tx( s_inputs, outputs ) )
if to_address not in self.addressbook:
self.addressbook.append(to_address)
if label:
tx_hash = Hash(tx.decode('hex') )[::-1].encode('hex')
wallet.labels[tx_hash] = label
wallet.save()
return tx
def sendtx(self, tx):
tx_hash = Hash(tx.decode('hex') )[::-1].encode('hex')
out = self.interface.send_tx(tx)
if out != tx_hash:
return False, "error: " + out
return True, out