import hashlib, base64, ecdsa, re
-
+from util import print_error
def rev_hex(s):
return s.decode('hex')[::-1].encode('hex')
###################################### BIP32 ##############################
+random_seed = lambda n: "%032x"%ecdsa.util.randrange( pow(2,n) )
+
+
+
def bip32_init(seed):
import hmac
-def raw_tx( inputs, outputs, for_sig = None ):
- s = int_to_hex(1,4) # version
- s += var_int( len(inputs) ) # number of inputs
- for i in range(len(inputs)):
- txin = inputs[i]
- s += txin['tx_hash'].decode('hex')[::-1].encode('hex') # prev hash
- s += int_to_hex(txin['index'],4) # prev index
- if for_sig is None:
- pubkeysig = txin.get('pubkeysig')
- if pubkeysig:
- pubkey, sig = pubkeysig[0]
- sig = sig + chr(1) # hashtype
- script = op_push( len(sig))
- script += sig.encode('hex')
- script += op_push( len(pubkey))
- script += pubkey.encode('hex')
- else:
- signatures = txin['signatures']
- pubkeys = txin['pubkeys']
- script = '00' # op_0
- for sig in signatures:
- sig = sig + '01'
- script += op_push(len(sig)/2)
- script += sig
-
- redeem_script = multisig_script(pubkeys,2)
- script += op_push(len(redeem_script)/2)
- script += redeem_script
-
- elif for_sig==i:
- if txin.get('redeemScript'):
- script = txin['redeemScript'] # p2sh uses the inner script
- else:
- script = txin['raw_output_script'] # scriptsig
- else:
- script=''
- s += var_int( len(script)/2 ) # script length
- s += script
- s += "ffffffff" # sequence
-
- s += var_int( len(outputs) ) # number of outputs
- for output in outputs:
- addr, amount = output
- s += int_to_hex( amount, 8) # amount
- addrtype, hash_160 = bc_address_to_hash_160(addr)
- if addrtype == 0:
- script = '76a9' # op_dup, op_hash_160
- script += '14' # push 0x14 bytes
- script += hash_160.encode('hex')
- script += '88ac' # op_equalverify, op_checksig
- elif addrtype == 5:
- script = 'a9' # op_hash_160
- script += '14' # push 0x14 bytes
- script += hash_160.encode('hex')
- script += '87' # op_equal
- else:
- raise
-
- s += var_int( len(script)/2 ) # script length
- s += script # script
- s += int_to_hex(0,4) # lock time
- if for_sig is not None and for_sig != -1:
- s += int_to_hex(1, 4) # hash type
- return s
-
-
-
-
-def multisig_script(public_keys, num=None):
- # supports only "2 of 2", and "2 of 3" transactions
- n = len(public_keys)
-
- if num is None:
- num = n
-
- assert num <= n and n <= 3 and n >= 2
-
- if num==2:
- s = '52'
- elif num == 3:
- s = '53'
- else:
- raise
-
- for k in public_keys:
- s += var_int(len(k)/2)
- s += k
- if n==2:
- s += '52'
- elif n==3:
- s += '53'
- else:
- raise
- s += 'ae'
- return s
@classmethod
def from_io(klass, inputs, outputs):
- raw = raw_tx(inputs, outputs, for_sig = -1) # for_sig=-1 means do not sign
+ raw = klass.serialize(inputs, outputs, for_sig = -1) # for_sig=-1 means do not sign
self = klass(raw)
+ self.is_complete = False
self.inputs = inputs
self.outputs = outputs
+ extras = []
+ for i in self.inputs:
+ e = { 'txid':i['tx_hash'], 'vout':i['index'],'scriptPubKey':i['raw_output_script'] }
+ extras.append(e)
+ self.input_info = extras
return self
def __str__(self):
return self.raw
+ @classmethod
+ def multisig_script(klass, public_keys, num=None):
+ n = len(public_keys)
+ if num is None: num = n
+ # supports only "2 of 2", and "2 of 3" transactions
+ assert num <= n and n in [2,3]
+
+ if num==2:
+ s = '52'
+ elif num == 3:
+ s = '53'
+ else:
+ raise
+
+ for k in public_keys:
+ s += var_int(len(k)/2)
+ s += k
+ if n==2:
+ s += '52'
+ elif n==3:
+ s += '53'
+ else:
+ raise
+ s += 'ae'
+
+ out = { "address": hash_160_to_bc_address(hash_160(s.decode('hex')), 5), "redeemScript":s }
+ return out
+
+ @classmethod
+ def serialize( klass, inputs, outputs, for_sig = None ):
+
+ s = int_to_hex(1,4) # version
+ s += var_int( len(inputs) ) # number of inputs
+ for i in range(len(inputs)):
+ txin = inputs[i]
+ s += txin['tx_hash'].decode('hex')[::-1].encode('hex') # prev hash
+ s += int_to_hex(txin['index'],4) # prev index
+
+ if for_sig is None:
+ pubkeysig = txin.get('pubkeysig')
+ if pubkeysig:
+ pubkey, sig = pubkeysig[0]
+ sig = sig + chr(1) # hashtype
+ script = op_push( len(sig))
+ script += sig.encode('hex')
+ script += op_push( len(pubkey))
+ script += pubkey.encode('hex')
+ else:
+ signatures = txin['signatures']
+ pubkeys = txin['pubkeys']
+ script = '00' # op_0
+ for sig in signatures:
+ sig = sig + '01'
+ script += op_push(len(sig)/2)
+ script += sig
+
+ redeem_script = klass.multisig_script(pubkeys,2).get('redeemScript')
+ script += op_push(len(redeem_script)/2)
+ script += redeem_script
+
+ elif for_sig==i:
+ if txin.get('redeemScript'):
+ script = txin['redeemScript'] # p2sh uses the inner script
+ else:
+ script = txin['raw_output_script'] # scriptsig
+ else:
+ script=''
+ s += var_int( len(script)/2 ) # script length
+ s += script
+ s += "ffffffff" # sequence
+
+ s += var_int( len(outputs) ) # number of outputs
+ for output in outputs:
+ addr, amount = output
+ s += int_to_hex( amount, 8) # amount
+ addrtype, hash_160 = bc_address_to_hash_160(addr)
+ if addrtype == 0:
+ script = '76a9' # op_dup, op_hash_160
+ script += '14' # push 0x14 bytes
+ script += hash_160.encode('hex')
+ script += '88ac' # op_equalverify, op_checksig
+ elif addrtype == 5:
+ script = 'a9' # op_hash_160
+ script += '14' # push 0x14 bytes
+ script += hash_160.encode('hex')
+ script += '87' # op_equal
+ else:
+ raise
+
+ s += var_int( len(script)/2 ) # script length
+ s += script # script
+ s += int_to_hex(0,4) # lock time
+ if for_sig is not None and for_sig != -1:
+ s += int_to_hex(1, 4) # hash type
+ return s
+
+
def for_sig(self,i):
- return raw_tx(self.inputs, self.outputs, for_sig = i)
+ return self.serialize(self.inputs, self.outputs, for_sig = i)
+
def hash(self):
return Hash(self.raw.decode('hex') )[::-1].encode('hex')
for i in range(len(self.inputs)):
txin = self.inputs[i]
- tx_for_sig = raw_tx( self.inputs, self.outputs, for_sig = i )
+ tx_for_sig = self.serialize( self.inputs, self.outputs, for_sig = i )
if txin.get('redeemScript'):
# 1 parse the redeem script
# list of already existing signatures
signatures = txin.get("signatures",[])
- found = False
- complete = True
+ print_error("signatures",signatures)
- # check if we have a key corresponding to the redeem script
for pubkey in redeem_pubkeys:
public_key = ecdsa.VerifyingKey.from_string(pubkey[2:].decode('hex'), curve = SECP256k1)
-
for s in signatures:
try:
public_key.verify_digest( s.decode('hex')[:-1], Hash( tx_for_sig.decode('hex') ), sigdecode = ecdsa.util.sigdecode_der)
except ecdsa.keys.BadSignatureError:
continue
else:
+ # check if we have a key corresponding to the redeem script
if pubkey in keypairs.keys():
# add signature
sec = keypairs[pubkey]
sig = private_key.sign_digest( Hash( tx_for_sig.decode('hex') ), sigencode = ecdsa.util.sigencode_der )
assert public_key.verify_digest( sig, Hash( tx_for_sig.decode('hex') ), sigdecode = ecdsa.util.sigdecode_der)
signatures.append( sig.encode('hex') )
- found = True
- else:
- complete = False
- if not found:
- raise BaseException("public key not found", keypairs.keys(), redeem_pubkeys)
-
# for p2sh, pubkeysig is a tuple (may be incomplete)
self.inputs[i]["signatures"] = signatures
- self.is_complete = complete
+ print_error("signatures",signatures)
+ self.is_complete = len(signatures) == num
else:
sec = private_keys[txin['address']]
self.inputs[i]["pubkeysig"] = [(pubkey, sig)]
self.is_complete = True
- self.raw = raw_tx( self.inputs, self.outputs )
+ self.raw = self.serialize( self.inputs, self.outputs )
def deserialize(self):
git://git.novaco.in / electrum-nvc.git / blobdiff