def getinfo(args):
for filename in args:
print "----------------"
print "Filename: ", filename
privateKey = readPrivateKey(filename)
k = Key()
k.setPrivateKey(privateKey)
print "Public key: ", k.getPublicKey().encode("hex")
print "Address: ", getAddress(k)
def sendToMultiSigPubKey(bitcoind, amount, toPubKey1, toPubKey2, changeHash, fee): """ Make a transaction to send funds from ourself to a 2-of-2 multi-signature scriptPubKey. The transaction is returned, and is NOT published on the Bitcoin network by this function. Arguments: bitcoind: Bitcoind; the bitcoin daemon from which to retrieve this information amount: int; the amount to be sent, not including the fee (in Satoshi) toPubKey1: str; the first public key toPubKey2: str; the second public key changeHash: str; the SHA256- and RIPEMD160-hashed public key to which any change should be sent (equivalent to the bitcoin address) fee: int; the transaction fee (in Satoshi) Return value: Transaction; the transaction that sends funds as specified. Exceptions: Exception: insufficient funds """ totalIn, inputs = getInputsForAmount(bitcoind, amount+fee) change = totalIn - fee - amount #print "%d -> %d, %d, %d" % (totalIn, amount, change, fee) tx = Transaction( tx_in = [ TxIn(x[0], x[1]) for x in inputs ], tx_out = [ TxOut(amount, Script.multiSigPubKey([toPubKey1, toPubKey2])), TxOut(change, Script.standardPubKey(changeHash)) ] ) for i in range(len(inputs)): scriptPubKey = Script.deserialize(inputs[i][2]) key = Key() key.setPrivateKey(inputs[i][3]) tx.signInput(i, scriptPubKey, [None, key.getPublicKey()], [key]) return tx
def sendToDataPubKey(bitcoind, data, changeHash, fee): """ Make a transaction to publish data on the block chain with an OP_RETURN output. No funds are sent to the OP_RETURN output: everything goes to fee and to the change address. The transaction is returned, and is NOT published on the Bitcoin network by this function. Arguments: bitcoind: Bitcoind; the bitcoin daemon from which to retrieve this information data: str; the data to be included in the scriptPubKey (max. 40 bytes) changeHash: str; the SHA256- and RIPEMD160-hashed public key to which any change should be sent (equivalent to the bitcoin address) fee: int; the transaction fee (in Satoshi) Return value: Transaction; the transaction that sends funds as specified. Exceptions: Exception: insufficient funds """ totalIn, inputs = getInputsForAmount(bitcoind, fee) change = totalIn - fee print "%d -> %d, %d" % (totalIn, change, fee) tx = Transaction( tx_in = [ TxIn(x[0], x[1]) for x in inputs ], tx_out = [ TxOut(0, Script.dataPubKey(data)), TxOut(change, Script.standardPubKey(changeHash)) ] ) for i in range(len(inputs)): scriptPubKey = Script.deserialize(inputs[i][2]) key = Key() key.setPrivateKey(inputs[i][3]) tx.signInput(i, scriptPubKey, [None, key.getPublicKey()], [key]) return tx
def sendToMultiSigPubKey(bitcoind, amount, toPubKey1, toPubKey2, changeHash,
fee):
"""
Make a transaction to send funds from ourself to a 2-of-2 multi-signature
scriptPubKey. The transaction is returned, and is NOT published on the
Bitcoin network by this function.
Arguments:
bitcoind: Bitcoind; the bitcoin daemon from which to retrieve this information
amount: int; the amount to be sent, not including the fee (in Satoshi)
toPubKey1: str; the first public key
toPubKey2: str; the second public key
changeHash: str; the SHA256- and RIPEMD160-hashed public key to which any
change should be sent (equivalent to the bitcoin address)
fee: int; the transaction fee (in Satoshi)
Return value:
Transaction; the transaction that sends funds as specified.
Exceptions:
Exception: insufficient funds
"""
totalIn, inputs = getInputsForAmount(bitcoind, amount + fee)
change = totalIn - fee - amount
#print "%d -> %d, %d, %d" % (totalIn, amount, change, fee)
tx = Transaction(tx_in=[TxIn(x[0], x[1]) for x in inputs],
tx_out=[
TxOut(amount,
Script.multiSigPubKey([toPubKey1, toPubKey2])),
TxOut(change, Script.standardPubKey(changeHash))
])
for i in range(len(inputs)):
scriptPubKey = Script.deserialize(inputs[i][2])
key = Key()
key.setPrivateKey(inputs[i][3])
tx.signInput(i, scriptPubKey, [None, key.getPublicKey()], [key])
return tx
def sendToDataPubKey(bitcoind, data, changeHash, fee):
"""
Make a transaction to publish data on the block chain with an OP_RETURN
output. No funds are sent to the OP_RETURN output: everything goes to fee
and to the change address. The transaction is returned, and
is NOT published on the Bitcoin network by this function.
Arguments:
bitcoind: Bitcoind; the bitcoin daemon from which to retrieve this information
data: str; the data to be included in the scriptPubKey (max. 40 bytes)
changeHash: str; the SHA256- and RIPEMD160-hashed public key to which any
change should be sent (equivalent to the bitcoin address)
fee: int; the transaction fee (in Satoshi)
Return value:
Transaction; the transaction that sends funds as specified.
Exceptions:
Exception: insufficient funds
"""
totalIn, inputs = getInputsForAmount(bitcoind, fee)
change = totalIn - fee
print "%d -> %d, %d" % (totalIn, change, fee)
tx = Transaction(tx_in=[TxIn(x[0], x[1]) for x in inputs],
tx_out=[
TxOut(0, Script.dataPubKey(data)),
TxOut(change, Script.standardPubKey(changeHash))
])
for i in range(len(inputs)):
scriptPubKey = Script.deserialize(inputs[i][2])
key = Key()
key.setPrivateKey(inputs[i][3])
tx.signInput(i, scriptPubKey, [None, key.getPublicKey()], [key])
return tx
def __init__(self, inputs: list, outputs: list, key: Key):
"""
This is a object that represents a transaction that will be loaded into a blockchain
TODO: * Cryptographically authenticate this based on a private key.
* Encode and store this as raw bytes
* A transaction needs to have multiple inputs and outputs
:param inputs: a list of all transactions used as an inputs
:param outputs: a dict of {destinations: amount} pairs that corrispond to the destinations
:param proof: the cryptographic evedence that the sender is the one who created the transaction.
:param amount: the amount of currency being sent to the receivers wallet.
"""
self["uuid"] = sha256().hash(str(
time_ns().encode('utf-8'))).hexdigest()
self["public_key"] = key.public_key().public_bytes()
self["inputs"] = self.tx_inputs(inputs)
self["outputs"] = self.tx_outputs(outputs)
d = bitcoind.Bitcoind(s)
#(these addresses are mine - thanks for donating :-P)
keyHash1 = binascii.unhexlify("fd5627c5eff58991dec54877272e82f758ea8b65")
keyHash2 = binascii.unhexlify("ab22c699d3e72f2c1e4896508bf9d8d7910104d0")
address1 = base58.encodeBase58Check(keyHash1, 0)
address2 = base58.encodeBase58Check(keyHash2, 0)
print address1
print address2
#Note: this will fail, unless you change toe above addresses to some of your own
privKey1 = base58.decodeBase58Check(d.getPrivateKey(address1), 128)
privKey2 = base58.decodeBase58Check(d.getPrivateKey(address2), 128)
key1 = Key()
key1.setPrivateKey(privKey1)
key2 = Key()
key2.setPrivateKey(privKey2)
print key1.getPublicKey().encode("hex")
print key2.getPublicKey().encode("hex")
amount = int(100000 * float(raw_input("Amount to be transferred (mBTC): ")))
fee = 10000 #0.1 mBTC
outputHash = binascii.unhexlify(raw_input("Input hash (empty: create multisig): "))[::-1]
if outputHash == "":
tx = sendToMultiSigPubKey(d, amount,
def sign(self, key: Key) -> bytes:
"""
TODO: Implement signing the transaction with the private key to generate a signature
"""
self["signature"] = key.sign(self["uuid"].encode('utf-8'))
from crypto import Key, SHA256, RIPEMD160
import base58
def readPrivateKey(filename):
with open(filename, "rb") as f:
privateKey = f.read()
privateKey = privateKey.split("\n")[0] #first line
privateKey = privateKey.strip() #ignore whitespace
return base58.decodeBase58Check(privateKey, 128) #PRIVKEY = 128
def getTraditionalAddress(key):
publicKeyHash = RIPEMD160(SHA256(key.getPublicKey()))
return base58.encodeBase58Check(publicKeyHash, 0) #PUBKEY_ADDRESS = 0
# get traditional address using a public key (given a private key)
privateKey = readPrivateKey('key.txt')
k = Key()
k.setPrivateKey(privateKey)
trad_address = getTraditionalAddress(k)
print "Public key: ", k.getPublicKey().encode("hex")
print "Public Key Hash " + RIPEMD160(SHA256(k.getPublicKey())).encode("hex")
print "Traditional Address: ", trad_address
def spend(args):
#Load the keys
keys = []
for filename in args:
privateKey = readPrivateKey(filename)
k = Key()
k.setPrivateKey(privateKey)
keys.append(k)
def getKey(question):
for i in range(len(keys)):
print i + 1, getAddress(keys[i])
i = int(raw_input(question)) - 1
return keys[i]
#Ask for input information:
inputs = []
amounts = []
while True:
txid = raw_input("Transaction ID of unspent output (Enter to stop): ")
txid = txid.strip()
if txid == "":
break
txid = binascii.unhexlify(txid)[::-1]
vout = int(raw_input("Output index of unspent output: "))
k = getKey("Address of unspent output: ")
inputs.append((txid, vout, k))
amounts.append(
int(
decimal.Decimal(raw_input("Amount in unspent output (BCC): "))
* BCC))
totalAmount = sum(amounts)
print "Total of amounts: %s BCC" % str(decimal.Decimal(totalAmount) / BCC)
fee = int(decimal.Decimal(raw_input("Transaction fee (BCC): ")) * BCC)
destAddress = raw_input("Destination address: ")
destHash = base58.decodeBase58Check(destAddress, 0) #PUBKEY_ADDRESS = 0
destAmount = totalAmount - fee
print "Amount sent to destination: %s BCC" % str(
decimal.Decimal(destAmount) / BCC)
if destAmount < 0:
print "Negative amount is not allowed"
sys.exit(2)
'''
if destAmount > totalAmount - fee:
print "Not enough funds"
sys.exit(1)
'''
tx = btx.Transaction(
tx_in=[btx.TxIn(x[0], x[1]) for x in inputs],
tx_out=[btx.TxOut(destAmount, btx.Script.standardPubKey(destHash))])
'''
changeKey = getKey("Address to send change amount to: ")
changeAddress = getAddress(changeKey)
changeHash = base58.decodeBase58Check(changeAddress, 0) #PUBKEY_ADDRESS = 0
changeAmount = totalAmount - destAmount - fee
if changeAmount < 0:
raise Exception("Error: got negative change amount")
elif changeAmount == 0:
print "Note: change amount is zero - no change is sent"
else:
tx.tx_out.append(
btx.TxOut(changeAmount, btx.Script.standardPubKey(changeHash))
)
'''
for i in range(len(inputs)):
#print tx.tx_in[i].previousOutputHash.encode("hex"), tx.tx_in[i].previousOutputIndex
key = inputs[i][2]
address = getAddress(key)
hash = base58.decodeBase58Check(address, 0) #PUBKEY_ADDRESS = 0
scriptPubKey = btx.Script.standardPubKey(hash)
tx.signInput(i, scriptPubKey, [None, key.getPublicKey()], [key],
amounts[i])
print "Serialized transaction:"
print tx.serialize().encode("hex")
print "Transaction ID:", tx.getTransactionID()[::-1].encode("hex")
def decode(args):
s = args[0]
amounts = [int(decimal.Decimal(a) * BCC) for a in args[1:]]
serialized = binascii.unhexlify(s)
tx = btx.Transaction.deserialize(serialized)
print 'lockTime: ', tx.lockTime
for i in range(len(tx.tx_in)):
tx_in = tx.tx_in[i]
print 'TxIn:'
print ' amount: %s BCC' % str(decimal.Decimal(amounts[i]) / BCC)
print ' prevOutputHash: ', tx_in.previousOutputHash.encode("hex")
print ' prevOutputIndex: ', tx_in.previousOutputIndex
print ' sequenceNumber: 0x%08x' % tx_in.sequenceNumber
print ' script:'
for e in tx_in.scriptSig.elements:
if isinstance(e, str):
s = e.encode("hex")
else:
s = str(e)
print ' ', s
signature, pubKey = tx_in.scriptSig.elements
hashType = ord(signature[-1])
signature = signature[:-1]
k = Key()
k.setPublicKey(pubKey)
address = getAddress(k)
hash = base58.decodeBase58Check(address, 0) #PUBKEY_ADDRESS = 0
scriptPubKey = btx.Script.standardPubKey(hash)
sigHash = tx.getSignatureBodyHash(i,
scriptPubKey,
hashType,
amount=amounts[i])
print ' pubKey: ', pubKey.encode('hex')
print ' signature: ', signature.encode('hex')
print ' hashType: 0x%0x' % hashType
print ' address: ', address
print ' sigHash: ', sigHash.encode('hex')
print ' valid: ', k.verify(sigHash, signature)
print ''
for tx_out in tx.tx_out:
print 'TxOut:'
print ' amount: %s BCC' % str(decimal.Decimal(tx_out.amount) / BCC)
elements = tx_out.scriptPubKey.elements
print ' script:'
for e in elements:
if isinstance(e, str):
s = e.encode("hex")
else:
s = '0x%0x' % e
print ' ', s
if len(elements) == 5 and \
elements[0:2] == [btx.OP.DUP, btx.OP.HASH160] and \
elements[3:5] == [btx.OP.EQUALVERIFY, btx.OP.CHECKSIG] and \
isinstance(elements[2], str):
address = base58.encodeBase58Check(elements[2],
0) #PUBKEY_ADDRESS = 0
print ' Address: ', address
else:
print ' Unrecognized script type'
print ''
fee = sum(amounts) - sum([tx_out.amount for tx_out in tx.tx_out])
print 'Tx fee: %s BCC' % str(decimal.Decimal(fee) / BCC)
