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final/ 0000775 0001750 0001750 00000000000 13641712434 010674 5 ustar user user final/blockchain.py 0000664 0001750 0001750 00000001535 13641705640 013350 0 ustar user user import block
#import transaction
#import wallet
class Blockchain:
def __init__(self):
self.chain = []
def add_block(self, block):
self.chain.append(block)
return True
def last_block(self):
return self.chain[-1]
def view_transactions(self):
#prints the transactions of the last block
last_transactions = self.last_block().listOfTransactions
for i in range(len(last_transactions)):
print(last_transactions[i])
def print_chain(self):
i = 0
for bentry in self.chain:
print('=======')
print("Block ", i,)
transactions = bentry.listOfTransactions
j = 0
for tentry in transactions:
print('\t',j,': ',tentry.amount ,tentry.index)
j +=1
i += 1
final/wallet.py 0000664 0001750 0001750 00000002145 13637147635 012552 0 ustar user user import binascii
import Crypto
import Crypto.Random
from Crypto.Hash import SHA
from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
import hashlib
import json
from time import time
from urllib.parse import urlparse
from uuid import uuid4
class Wallet:
def __init__(self, address, transactions, public_key=None, private_key=None):
keys = self.generate_RSA()
self.public_key = keys[0]
self.private_key = keys[1]
self.utxos = {}
self.utxos[self.public_key] = []
self.address = address
self.transactions = transactions
self.balance = self.calculate_balance()
def generate_RSA(self):
new_keypair = RSA.generate(2048)
public_key = new_keypair.publickey().exportKey('PEM').decode()
private_key = new_keypair.exportKey('PEM').decode()
# print([public_key, private_key])
return [public_key, private_key]
def calculate_balance(self):
myutxo = self.utxos[self.public_key]
balance = 0
for entry in myutxo:
balance += entry['amount']
return balance
def get_private_key(self):
return self.private_key
def get_public_key(self):
return self.public_key
final/client.py 0000664 0001750 0001750 00000004542 13641711050 012522 0 ustar user user import requests
import click
import addresses
from ip import get_my_ip
import node
@click.group()
def cli():
pass
@click.command()
def hello():
click.echo("Hello World!")
@click.command()
def connect():
click.echo("Connecting to bootstrap...")
my_ip = get_my_ip()
url = "http://" + my_ip + ":5000/setup_myself"
r = requests.get(url)
click.echo("Returned this:")
click.echo(r.text)
@click.command()
@click.option('-i', '--id', help='Id of receiving node.')
@click.option('-a', '--amount', help='Amount of CC to send.')
def t(id, amount):
# Send amount CC another node
#url = "http://" + addresses[id] + ':5000/send_money'
print("Sending request")
my_ip = get_my_ip()
print(my_ip)
print(type(my_ip))
url = "http://" + my_ip + ":5000/send_money"
r = requests.post(url, data={'ip': addresses.global_addresses[id], 'amount': amount})
if r.status_code == 500:
print("Not enough money on wallet!")
else:
print("Thanks for using C O U S T E R I U M")
@click.command()
def balance():
r = requests.get("http://" + get_my_ip() + ":5000/get_balance")
print("Your wallet has " + r.text + " NBCs")
@click.command()
def view():
r = requests.get("http://" + get_my_ip() + ":5000/view_transactions")
print("Your block's transactions: ")
print(r.text)
cli.add_command(balance)
cli.add_command(hello)
cli.add_command(connect)
cli.add_command(t)
cli.add_command(view)
if __name__ == '__main__':
print(" /$$$$$$ /$$ /$$ ")
print(" /$$__ $$ | $$ |__/ ")
print("| $$ \__/ /$$$$$$ /$$ /$$ /$$$$$$$ /$$$$$$ /$$$$$$ /$$$$$$ /$$ /$$ /$$ /$$$$$$/$$$$ ")
print("| $$ /$$__ $$| $$ | $$ /$$_____/|_ $$_/ /$$__ $$ /$$__ $$| $$| $$ | $$| $$_ $$_ $$")
print("| $$ | $$ \ $$| $$ | $$| $$$$$$ | $$ | $$$$$$$$| $$ \__/| $$| $$ | $$| $$ \ $$ \ $$")
print("| $$ $$| $$ | $$| $$ | $$ \____ $$ | $$ /$$| $$_____/| $$ | $$| $$ | $$| $$ | $$ | $$")
print("| $$$$$$/| $$$$$$/| $$$$$$/ /$$$$$$$/ | $$$$/| $$$$$$$| $$ | $$| $$$$$$/| $$ | $$ | $$")
print(" \______/ \______/ \______/ |_______/ \___/ \_______/|__/ |__/ \______/ |__/ |__/ |__/")
cli()
final/setup.py 0000664 0001750 0001750 00000000345 13635732235 012414 0 ustar user user from setuptools import setup
setup(
name='MyClient',
version='1.0',
py_modules=['client'],
install_requires=[
'Click',
],
entry_points='''
[console_scripts]
client=client:cli
''',
)
final/node.py 0000664 0001750 0001750 00000014421 13641711651 012175 0 ustar user user import addresses
import ip
import transaction
import block
import wallet
import blockchain
import Crypto
import Crypto.Random
from Crypto.Hash import SHA384
from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
import base64
import json
import jsonpickle
import requests
def verify_signature(my_transaction):
#receiver node verifies signature of sender node
p_key = RSA.importKey(my_transaction.sender.encode())
verifier = PKCS1_v1_5.new(p_key)
myhash = SHA384.new(my_transaction.to_dict().encode())
print("myhash is " + str(myhash))
return verifier.verify(myhash, base64.b64decode(my_transaction.signature))
def validate_transaction(sender_wallet,my_transaction, my_wallet):
t = my_transaction
if not verify_signature(t):
raise Exception('Verification failure')
sender_utxos = sender_wallet.utxos[sender_wallet.get_public_key()].copy()
balance = sender_wallet.calculate_balance()
if balance < t.amount:
raise Exception('Ftwxe')
#Check if inputs are utxos
for tid in t.inputs:
c = False
for utxo in sender_utxos:
if tid['id'] == utxo['id']:
c = True
my_wallet.utxos[t.sender].remove(utxo)
break
if not c:
raise Exception('Input not utxo')
t.outputs = [{
'id': t.index,
'who': t.sender,
'amount': balance - t.amount
},{
'id': t.index,
'who': t.recipient,
'amount': t.amount
}]
if t.recipient not in my_wallet.utxos.keys():
my_wallet.utxos[t.recipient] = [t.outputs[1]]
else:
my_wallet.utxos[t.recipient].append(t.outputs[1])
my_wallet.utxos[t.sender].append(t.outputs[0])
my_wallet.transactions.append(t)
return True
class Node:
# FIVOS
# Only one node is running on each VM. Each node only has one wallet.
def __init__(self, address, chain, current_block=None, node_id=0, NBC=0, ring=[]):
##set
self.chain = blockchain.Blockchain()
self.id = node_id
self.NBC = NBC
self.address = address # Address is a string
self.wallet = self.create_wallet()
self.ring = ring #here we store information for every node, as its id, its address (ip:port) its public key and its balance
self.current_block = current_block
self.block_ids = 1
self.difficulty = 2
def set_id(self, myid):
self.id = myid
def create_genesis_block(self):
genesis_block = block.Block(0, -1)
genesis_block.current_hash = genesis_block.myHash()
def create_new_block(self, prevHash=0):
myid = self.block_ids
result = block.Block(myid, prevHash)
self.block_ids += 1
return(result)
def create_wallet(self):
#create a wallet for this node, with a public key and a private key
return wallet.Wallet(self.address, []) # TODO Add constructor fields
def register_node_to_ring(self, id, public_key):
#add this node to the ring, only the bootstrap node can add a node to the ring after checking his wallet and ip:port address
#bottstrap node informs all other nodes and gives the request node an id and 100 NBCs
self.ring.append({id: public_key})
def broadcast_transaction(self, my_transaction):
print("In broadcast_transaction")
#print("SELF.RING: ##############")
#print(self.ring)
my_transaction_pickle = jsonpickle.encode(my_transaction)
my_wallet_pickle = jsonpickle.encode(self.wallet)
for dictionary in self.ring:
# Send the transaction to every ip in node.ring
print("SENDING TO (FROM BROADCAST_TRANSACTION)")
print(dictionary['ip'])
url = "http://" + dictionary['ip'] + ":5000/incoming_transaction"
#print("BROADCASTING TRANSACTION TO: ")
#print(url)
#print("WALLET IN BROADCAST BEFORE POST")
#print(self.wallet.utxos)
r = requests.post(url, data = {'transaction': my_transaction_pickle, 'wallet': my_wallet_pickle})
#print(r)
def add_transaction_to_block(self, transaction):
#if enough transactions mine, then create new block
#print("current block in add_trans_to_block")
#print(self.current_block)
capacity = self.current_block.capacity
#print(self.current_block.listOfTransactions)
self.current_block.add_transaction(transaction)
if (self.check_capacity() == True):
return True
else:
self.mine_handler()
def check_capacity(self):
if(len(self.current_block.listOfTransactions) == self.current_block.capacity):
return False
else:
return True
def mine_handler(self):
print("Block is ready for mining")
temp_current_block = self.current_block
block_pickle = jsonpickle.encode(temp_current_block)
self.current_block = self.create_new_block()
# Send the current block to be mined!
print(self.address)
r = requests.post("http://" + str(self.address) + ":5000/start_mining", data={'block':block_pickle})
temp_current_block.current_hash = r.text
self.broadcast_block(temp_current_block)
def mine_block(self, current_block):
result_hash = self.proof_of_work(current_block)
return(result_hash)
def broadcast_block(self, myblock):
block_pickle = jsonpickle.encode(myblock)
for entry in self.ring:
r = requests.post("http://" + entry['ip'] + ":5000/incoming_block", data={'block': block_pickle})
def proof_of_work(self, myblock):
myblock.nonce = 0
current_hash = myblock.myHash()
while not current_hash.startswith('0' * self.difficulty):
myblock.nonce += 1
current_hash = myblock.myHash()
return current_hash
def validate_block(self, myblock):
if (self.is_valid_proof(myblock)):
print("Valid proof!")
if (self.chain.last_block().current_hash == myblock.previousHash):
print("correct prevhash!")
self.chain.add_block(myblock)
return True
else:
print("Invalid previous hash")
#self.resolve_conflicts()
else:
print("Wrong something")
return False
def is_valid_proof(self, myblock):
print("myblock.current_hash is:")
print(myblock.current_hash)
return (myblock.current_hash.startswith('0' * self.difficulty))
#valid_proof(.., difficulty=MINING_DIFFICULTY):
# pass
#concencus functions
def valid_chain(self, chain):
for block in chain[1:]:
if not validate_block(block):
raise Exception("Blockchain varification failed")
return True
def resolve_conflicts(self):
addr = addresses.global_addresses.copy()
for i in addr:
if addr[i] == ip.get_my_ip():
break
del addr[i]
chains = []
for i in addr.keys():
r = requests.get('http://' + addr[i] + '/send_blockchain')
c = jsonpickle.decode(r.text)
chains.append(c)
chains.sort()
self.chain = chains[-1]
final/block.py 0000664 0001750 0001750 00000002144 13641702022 012331 0 ustar user user # Should import blockchain?
# import blockchain
import datetime
import json
from Crypto.Hash import SHA256
import jsonpickle
class Block:
def __init__(self, myid, previousHash=0, listOfTransactions=[], current_hash=None, nonce=0):
##set
# nonce = 0 only if we dont give any argument
self.myid = myid
self.previousHash = previousHash
self.timestamp = str(datetime.datetime.utcnow())
self.current_hash = current_hash
self.nonce = nonce
self.capacity = 5
self.listOfTransactions = listOfTransactions
def myHash(self):
return (SHA256.new(self.dump().encode()).hexdigest())
def add_transaction(self, transaction):
if len(self.listOfTransactions) < self.capacity:
print("In add_transaction if: ")
print(self.listOfTransactions)
self.listOfTransactions.append(transaction)
print(self.listOfTransactions)
def dump(self):
# Structure with trans, nonce, timestamp to use them in calculation of hash
transactions_pickle = jsonpickle.encode(self.listOfTransactions)
return json.dumps(dict(transactions=transactions_pickle,nonce=self.nonce,timestamp=self.timestamp), sort_keys=True)
final/rest.py 0000664 0001750 0001750 00000024466 13641712176 012242 0 ustar user user from flask import Flask, jsonify, request, render_template
import ids
import jsonpickle
import block
import node
import wallet
import transaction
import socket
import json
import requests
import netifaces
from ip import get_my_ip
# Setup the bootstrap node
def setup_bootstrap_node():
# Create the very first node
# The node constructor also creates the Wallet() we need and binds it to the node (I hope)
myNode = node.Node(0, MY_ADDRESS)
myNode.ring.append({'ip': get_my_ip(), 'id': 1, 'public_key': myNode.wallet.get_public_key()})
# Create the genesis block with id = 0 and prev_hash = -1
genesis_block = block.Block(0, -1, []) # TODO: we shouldn't have to pass emtpy list as listOfTransactions in constructor, see with peppas
# Need to add the first and only transaction to the genesis block
#print("The bootstrap node's wallet private key is ")
#print(myNode.wallet.get_private_key())
first_transaction = transaction.genesis_transaction(myNode.wallet, NETWORK_SIZE)
#first_transaction = transaction.Transaction( sender=0, recipient=MY_ADDRESS, amount=NETWORK_SIZE * 100, inputs=[])
# TODO: Use transaction.genesis_transaction
genesis_block.add_transaction(first_transaction)
#print(genesis_block.listOfTransactions)
# Add the first block to the node's blockchain
if not myNode.chain.add_block(genesis_block):
raise Exception('genesis not added')
myNode.address = MY_ADDRESS
myNode.current_block = myNode.create_new_block(myNode.chain.last_block().current_hash)
#print("current_block")
#print(myNode.current_block)
#print("Chain: ")
#print(myNode.chain.last_block())
#print("Bootstrap node has: ")
#print(myNode.wallet.calculate_balance())
# Return the node
return (myNode)
# Setup a regular participant node
def create_regular_node():
# Create node and associate with VM via address
myNode = node.Node(0, MY_ADDRESS)
myNode.address = MY_ADDRESS
r = requests.get("http://" + SERVER_ADDRESS + ":5000/get_bootstrap_utxo")
#print(r.text)
my_utxos = jsonpickle.decode(r.text)
#print(type(my_utxos))
#print("BEFORE:")
#print(myNode.wallet.utxos)
for key in my_utxos.keys():
if key not in myNode.wallet.utxos.keys():
myNode.wallet.utxos[key] = my_utxos[key]
#myNode.wallet.utxos = my_utxos.copy()
#print("AFTER")
#print(myNode.wallet.utxos)
myNode.current_block = myNode.create_new_block()
print("I RETURN: ")
print((myNode is None))
return(myNode)
def setup():
# Our node sends it's publik key (= wallet address = MY_ADDRESS ? )
# and receives a unique id (0..NETWORK_SIZE)
#print('http://' + SERVER_ADDRESS + ':5000/add_to_ring')
r = requests.post('http://' + SERVER_ADDRESS + ':5000/add_to_ring', data = {'public_key':MY_NODE.wallet.get_public_key()})
#print("The answer from the server is: \nr: ")
#print(r)
#print("\nr.text ")
#print(r.text)
# Set node id to the id you got on the response
MY_NODE.set_id(r.text)
#print("MY_NODE IS: ", myNode)
# A function to broadcast the ring information and his blockchain
#to all the nodes, when every node joins the system.
# This is only run from the bootstrap node
def broadcast_info():
#print("RING: ")
#print(MY_NODE.ring)
#print("BROADCASTING TO: " + "http://" + data_line['ip'] + ":5000/test")
ring_pickle = jsonpickle.encode(MY_NODE.ring)
blockchain_pickle = jsonpickle.encode(MY_NODE.chain)
for entry in MY_NODE.ring:
#print("TO: ", "http://" + entry['ip'] + ":5000/add_to_client_ring")
# TODO: ** Maybe we have to jsonpickle? **
r = requests.post("http://" + entry['ip'] + ":5000/add_to_client_ring", data={'ring':ring_pickle, 'blockchain': blockchain_pickle})
app = Flask(__name__)
# run it once fore every node
#### IF BOOTSTRAP NODE ####
if (get_my_ip() == '192.168.0.2'):
print("I'm gonna be the bootstrap!!!")
MY_ADDRESS = get_my_ip()
# Number of nodes in network
NETWORK_SIZE = 5
#IDs
NODE_IDS = [5, 4, 3, 2]
# IP addresses of all nodes in ring
MY_NODE = setup_bootstrap_node()
#ADDRESS_BOOK = [{MY_ADDRESS:MY_NODE.wallet.get_public_key()}]
#### IF REGULAR NODE ####
else:
print("I'm gonna be a client :(")
MY_ADDRESS = get_my_ip()
# Bootstrap node address (we suppose it is known to everyone)
SERVER_ADDRESS = '192.168.0.2'
MY_NODE = create_regular_node()
#print("We are OK, MY_NODE is " + MY_NODE is None)
@app.route('/add_to_client_ring', methods=['POST', 'GET'])
def add_to_client_ring():
incoming_ring = request.form.to_dict()['ring']
new_ring = jsonpickle.decode(incoming_ring)
incoming_blockchain = request.form.to_dict()['blockchain']
new_blockchain = jsonpickle.decode(incoming_blockchain)
MY_NODE.ring = new_ring
#print("Node with id ")
#print(MY_NODE.id)
#print(" has new ring: ")
#print(MY_NODE.ring)
print("CHAINZ BEFORE:")
print(MY_NODE.chain.print_chain())
MY_NODE.chain = new_blockchain
print("CHAINZ AFTER:")
print(MY_NODE.chain.print_chain())
#MY_NODE.wallet.utxos[request.form.to_dict()['public_key']] = []
#print("The node's utxos")
#print(MY_NODE.wallet.utxos)
return("OK!")
@app.route('/setup_myself', methods=['GET'])
def setup_myself():
setup()
return("Node setup with id " + MY_NODE.id)
@app.route('/get_bootstrap_utxo', methods=['GET'])
def get_bootstrap_utxo():
my_utxo = jsonpickle.encode(MY_NODE.wallet.utxos)
return(my_utxo)
@app.route('/incoming_transaction', methods=['POST'])
def incoming_transaction():
pickle_transaction = request.form.to_dict()['transaction']
pickle_wallet = request.form.to_dict()['wallet']
my_transaction = jsonpickle.decode(pickle_transaction)
incoming_wallet = jsonpickle.decode(pickle_wallet)
#print("WALLET BEFORE")
#print("WHO AM I???")
#print(get_my_ip())
#print(MY_NODE.wallet.utxos)
if (node.validate_transaction(incoming_wallet, my_transaction, MY_NODE.wallet)):
# Update the sender utxos
# IF validated add transaction to block
#print(my_transaction)
MY_NODE.add_transaction_to_block(my_transaction)
#print(MY_NODE.current_block)
#print("WALLET AFTER")
#print(MY_NODE.wallet.utxos)
return("OK")
@app.route('/incoming_block', methods=['POST'])
def incoming_block():
new_block = jsonpickle.decode(request.form.to_dict()['block'])
MY_NODE.validate_block(new_block)
MY_NODE.chain.print_chain()
return("Block Added!")
@app.route('/send_money', methods=['POST'])
def send_money():
#print("In send_money()")
# Create the transaction
# This runs on the node that sends the money
#TODO: in create_transaction, what is 'recipient'? Is it the object or the public key
# I use object here..
for dictionary in MY_NODE.ring:
#print(dictionary['ip'])
#print(request.form.to_dict()['ip'])
if dictionary['ip'] == request.form.to_dict()['ip']:
pk = dictionary['public_key']
#print(dictionary)
my_transaction = transaction.create_transaction(MY_NODE.wallet, pk, int(request.form.to_dict()['amount']))
MY_NODE.broadcast_transaction(my_transaction)
return("Sending the money...")
# Add the calling node to the ring
@app.route('/add_to_ring', methods=['POST'])
def add_to_ring():
next_id = NODE_IDS.pop()
MY_NODE.ring.append({'id': next_id, 'ip':request.remote_addr, 'public_key':request.form.to_dict()['public_key']})
### GIVE HIM 100 NBC ###
#print("Bootstrap WALLET BEFORE CREATE FIRST TRANSACTION: ")
#print(MY_NODE.wallet.utxos)
first_transaction = transaction.create_transaction(MY_NODE.wallet, request.form.to_dict()['public_key'], 100)
#print("Bootstrap WALLET AFTER FIRST TRANSACTION: ")
#print(MY_NODE.wallet.utxos)
#print("Pickle'ing the first_transaction object")
transaction_pickle = jsonpickle.encode(first_transaction)
#print(transaction_pickle)
#print("Pickle'ing the wallet")
wallet_pickle = jsonpickle.encode(MY_NODE.wallet)
# remote_addr is getting the same transaction twice!(?)
print("Sending transaction to: ")
print("http://" + request.remote_addr + ":5000/incoming_transaction")
#r = requests.post("http://" + request.remote_addr + ":5000/incoming_transaction", data={'transaction': transaction_pickle, 'wallet': wallet_pickle})
#print("Returned with answer: ")
#print(r)
#print(r.text)
MY_NODE.broadcast_transaction(first_transaction)
if next_id == 3:
broadcast_info()
print("Broadcast successful!")
return ("Node added to ring succesfully!")
@app.route('/get_balance', methods=['GET'])
def get_balance():
result = MY_NODE.wallet.calculate_balance()
print(result)
print(type(result))
return(str(result))
@app.route('/start_mining', methods=['GET', 'POST'])
def start_mining():
incoming_block = jsonpickle.decode(request.form.to_dict()['block'])
result_hash = MY_NODE.mine_block(incoming_block)
return(str(result_hash))
@app.route('/send_blockchain', methods=['GET'])
def send_blockchain():
c = jsonpickle.encode(MY_NODE.chain)
return(c)
@app.route('/view_transactions', methods=['GET'])
def view_transactions():
result = MY_NODE.chain.last_block()
result_string = ""
for trans in result.listOfTransactions:
for dictionary in MY_NODE.ring:
if dictionary['public_key'] == trans.sender:
sender_result = dictionary['ip']
if dictionary['public_key'] == trans.recipient:
recipient_result = dictionary['ip']
amount_result = trans.amount
result_string += ("\nMoved " + str(amount_result) + " NBCs from: " + str(ids.global_ids[sender_result]) + " to: " + str(ids.global_ids[recipient_result]))
return(result_string)
@app.route('/test', methods=['GET'])
def test():
while True:
pass
print('Address: ' + json.dumps(MY_ADDRESS))
return('Address: ' + json.dumps(MY_ADDRESS))
if __name__ == '__main__':
from argparse import ArgumentParser
parser = ArgumentParser()
parser.add_argument('-p', '--port', default=5000, type=int, help='port to listen on')
args = parser.parse_args()
port = args.port
print("Serving at: ", MY_ADDRESS)
app.run(host=MY_ADDRESS, port=port)
final/ip.py 0000664 0001750 0001750 00000000434 13636767435 011676 0 ustar user user import netifaces
# A function to get the VM's private IP (e.g. 192.168.0.4)
def get_my_ip():
"""
Find my private IP address
:return:
"""
iface = netifaces.ifaddresses('eth1').get(netifaces.AF_INET)
result = iface[0]["addr"]
print(result)
return(result) final/addresses.py 0000664 0001750 0001750 00000120000 13641712515 013214 0 ustar user user ./blockchain.py 0000664 0001750 0001750 00000001535 13641705640 012414 0 ustar user user import block
#import transaction
#import wallet
class Blockchain:
def __init__(self):
self.chain = []
def add_block(self, block):
self.chain.append(block)
return True
def last_block(self):
return self.chain[-1]
def view_transactions(self):
#prints the transactions of the last block
last_transactions = self.last_block().listOfTransactions
for i in range(len(last_transactions)):
print(last_transactions[i])
def print_chain(self):
i = 0
for bentry in self.chain:
print('=======')
print("Block ", i,)
transactions = bentry.listOfTransactions
j = 0
for tentry in transactions:
print('\t',j,': ',tentry.amount ,tentry.index)
j +=1
i += 1
./block.py 0000664 0001750 0001750 00000002144 13641702022 011375 0 ustar user user # Should import blockchain?
# import blockchain
import datetime
import json
from Crypto.Hash import SHA256
import jsonpickle
class Block:
def __init__(self, myid, previousHash=0, listOfTransactions=[], current_hash=None, nonce=0):
##set
# nonce = 0 only if we dont give any argument
self.myid = myid
self.previousHash = previousHash
self.timestamp = str(datetime.datetime.utcnow())
self.current_hash = current_hash
self.nonce = nonce
self.capacity = 5
self.listOfTransactions = listOfTransactions
def myHash(self):
return (SHA256.new(self.dump().encode()).hexdigest())
def add_transaction(self, transaction):
if len(self.listOfTransactions) < self.capacity:
print("In add_transaction if: ")
print(self.listOfTransactions)
self.listOfTransactions.append(transaction)
print(self.listOfTransactions)
def dump(self):
# Structure with trans, nonce, timestamp to use them in calculation of hash
transactions_pickle = jsonpickle.encode(self.listOfTransactions)
return json.dumps(dict(transactions=transactions_pickle,nonce=self.nonce,timestamp=self.timestamp), sort_keys=True)
./client.py 0000664 0001750 0001750 00000004542 13641711050 011566 0 ustar user user import requests
import click
import addresses
from ip import get_my_ip
import node
@click.group()
def cli():
pass
@click.command()
def hello():
click.echo("Hello World!")
@click.command()
def connect():
click.echo("Connecting to bootstrap...")
my_ip = get_my_ip()
url = "http://" + my_ip + ":5000/setup_myself"
r = requests.get(url)
click.echo("Returned this:")
click.echo(r.text)
@click.command()
@click.option('-i', '--id', help='Id of receiving node.')
@click.option('-a', '--amount', help='Amount of CC to send.')
def t(id, amount):
# Send amount CC another node
#url = "http://" + addresses[id] + ':5000/send_money'
print("Sending request")
my_ip = get_my_ip()
print(my_ip)
print(type(my_ip))
url = "http://" + my_ip + ":5000/send_money"
r = requests.post(url, data={'ip': addresses.global_addresses[id], 'amount': amount})
if r.status_code == 500:
print("Not enough money on wallet!")
else:
print("Thanks for using C O U S T E R I U M")
@click.command()
def balance():
r = requests.get("http://" + get_my_ip() + ":5000/get_balance")
print("Your wallet has " + r.text + " NBCs")
@click.command()
def view():
r = requests.get("http://" + get_my_ip() + ":5000/view_transactions")
print("Your block's transactions: ")
print(r.text)
cli.add_command(balance)
cli.add_command(hello)
cli.add_command(connect)
cli.add_command(t)
cli.add_command(view)
if __name__ == '__main__':
print(" /$$$$$$ /$$ /$$ ")
print(" /$$__ $$ | $$ |__/ ")
print("| $$ \__/ /$$$$$$ /$$ /$$ /$$$$$$$ /$$$$$$ /$$$$$$ /$$$$$$ /$$ /$$ /$$ /$$$$$$/$$$$ ")
print("| $$ /$$__ $$| $$ | $$ /$$_____/|_ $$_/ /$$__ $$ /$$__ $$| $$| $$ | $$| $$_ $$_ $$")
print("| $$ | $$ \ $$| $$ | $$| $$$$$$ | $$ | $$$$$$$$| $$ \__/| $$| $$ | $$| $$ \ $$ \ $$")
print("| $$ $$| $$ | $$| $$ | $$ \____ $$ | $$ /$$| $$_____/| $$ | $$| $$ | $$| $$ | $$ | $$")
print("| $$$$$$/| $$$$$$/| $$$$$$/ /$$$$$$$/ | $$$$/| $$$$$$$| $$ | $$| $$$$$$/| $$ | $$ | $$")
print(" \______/ \______/ \______/ |_______/ \___/ \_______/|__/ |__/ \______/ |__/ |__/ |__/")
cli()
./ids.py 0000664 0001750 0001750 00000000176 13641712017 011072 0 ustar user user global_ids = {
'192.168.0.2': 0,
'192.168.0.3': 1,
'192.168.0.4': 2,
'192.168.0.5': 3,
'192.168.0.6': 4
}
./ip.py 0000664 0001750 0001750 00000000434 13636767435 010742 0 ustar user user import netifaces
# A function to get the VM's private IP (e.g. 192.168.0.4)
def get_my_ip():
"""
Find my private IP address
:return:
"""
iface = netifaces.ifaddresses('eth1').get(netifaces.AF_INET)
result = iface[0]["addr"]
print(result)
return(result) ./my_pull.sh 0000775 0001750 0001750 00000000521 13634461551 011761 0 ustar user user #!/usr/bin/env bash
scp /home/user/Cousterium/* [email protected]:/home/user/Cousterium
scp /home/user/Cousterium/* [email protected]:/home/user/Cousterium
scp /home/user/Cousterium/* [email protected]:/home/user/Cousterium
scp /home/user/Cousterium/* [email protected]:/home/user/Cousterium
echo "Press any key to continue..."
read temp
./node.py 0000664 0001750 0001750 00000014421 13641711651 011241 0 ustar user user import addresses
import ip
import transaction
import block
import wallet
import blockchain
import Crypto
import Crypto.Random
from Crypto.Hash import SHA384
from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
import base64
import json
import jsonpickle
import requests
def verify_signature(my_transaction):
#receiver node verifies signature of sender node
p_key = RSA.importKey(my_transaction.sender.encode())
verifier = PKCS1_v1_5.new(p_key)
myhash = SHA384.new(my_transaction.to_dict().encode())
print("myhash is " + str(myhash))
return verifier.verify(myhash, base64.b64decode(my_transaction.signature))
def validate_transaction(sender_wallet,my_transaction, my_wallet):
t = my_transaction
if not verify_signature(t):
raise Exception('Verification failure')
sender_utxos = sender_wallet.utxos[sender_wallet.get_public_key()].copy()
balance = sender_wallet.calculate_balance()
if balance < t.amount:
raise Exception('Ftwxe')
#Check if inputs are utxos
for tid in t.inputs:
c = False
for utxo in sender_utxos:
if tid['id'] == utxo['id']:
c = True
my_wallet.utxos[t.sender].remove(utxo)
break
if not c:
raise Exception('Input not utxo')
t.outputs = [{
'id': t.index,
'who': t.sender,
'amount': balance - t.amount
},{
'id': t.index,
'who': t.recipient,
'amount': t.amount
}]
if t.recipient not in my_wallet.utxos.keys():
my_wallet.utxos[t.recipient] = [t.outputs[1]]