def serialize(self):
"""
Serializes the MultiSigTransaction.
Return value:
str; the serialized MultiSigTransaction.
"""
serializedList = tcd.serializeList(self.TCDlist)
return struct.pack('!I', len(serializedList)) + \
serializedList + self.transaction.serialize()
def setOutputs(self, ownPubKey, peerPubKey, escrowPubKey, ownAmount, peerAmount): """ Re-write the outputs of the transaction, based on the TCDlist attribute and the given arguments. Arguments: ownPubKey: str; our own public key. peerPubKey: str; the public key of the peer. escrowPubKey: str; the public key of the escrow service. ownAmount: int; the non-locked funds available to ourselves (in Satoshi). peerAmount: int; the non-locked funds available to the peer (in Satoshi). """ ownKeyHash = RIPEMD160(SHA256(ownPubKey)) peerKeyHash = RIPEMD160(SHA256(peerPubKey)) lockedAmount = sum([doc.amount for doc in self.TCDlist]) self.transaction.tx_out = [] if len(self.TCDlist) > 0: serializedList = tcd.serializeList(self.TCDlist) hashValue = RIPEMD160(SHA256(serializedList)) self.transaction.tx_out.append(bitcointransaction.TxOut( 0, #Don't send any funds here: they're unspendable. bitcointransaction.Script.dataPubKey(hashValue) )) if ownAmount > 0: self.transaction.tx_out.append(bitcointransaction.TxOut( ownAmount, bitcointransaction.Script.standardPubKey(ownKeyHash) )) if peerAmount > 0: self.transaction.tx_out.append(bitcointransaction.TxOut( peerAmount, bitcointransaction.Script.standardPubKey(peerKeyHash) )) if lockedAmount > 0: self.transaction.tx_out.append(bitcointransaction.TxOut( lockedAmount, bitcointransaction.Script.multiSigPubKey( [ownPubKey, peerPubKey, escrowPubKey]) ))
def getState(self, forDisplay=False):
"""
Return a data structure that contains state information of the
MultiSigTransaction.
Arguments:
forDisplay: bool; indicates whether the returned state is for user
interface display purposes (True) or for state saving
purposes (False). For user interface display purposes, a
summary may be returned instead of the complete state.
Return value:
A data structure, consisting of only standard Python types like dict,
list, str, bool, int.
"""
ret = {}
if forDisplay:
ret["ID"] = self.transaction.getTransactionID()[::-1].encode("hex")
else:
ret["tx"] = self.transaction.serialize().encode("hex")
ret["TCDs"] = tcd.serializeList(self.TCDlist).encode("hex")
return ret