def generate_transaction():
public_key = request.form['public_key']
private_key = request.form['private_key']
amount = request.form['amount']
fees = request.form['fees']
transaction = Transaction(private_key, public_key, amount, fees)
transaction.sign()
response = {'signature' : transaction.signature}
return jsonify(response), 200
def generate_transaction(self, amount):
self.signature_dict['signature_type'] = self.signature_type
self.receiver_signature_dict['signature_type'] = self.signature_type
new_transaction = Transaction(
debit_user_public_key=blockchain.get_user_public_key(
self.signature_dict),
credit_user_public_key=blockchain.get_user_public_key(
self.receiver_signature_dict),
transaction_value=amount)
new_transaction.sign(self.signature_dict, self.signature_type)
return new_transaction.serialize()
def add_transaction(to, amount, addr, public: PublicKey, private: PrivateKey):
t = Transaction(addr, to, amount, '', public)
print(t.message())
t.sign = sign(t.message(), private)
data = t.to_dict()
resp = requests.post(b_url + '/add_transaction', json=data)
return resp.text
def new_transaction() -> Response:
"""Add a new transaction to the blockchain."""
values = request.form
required = ('sender_address', 'sender_private_key', 'recipient_address',
'stock', 'quantity')
for r in required:
if r not in values:
print(values)
return Response('Missing form value', 400)
transaction = Transaction(values['sender_address'],
values['sender_private_key'],
values['recipient_address'], values['stock'],
values['quantity'])
signature = transaction.sign()
try:
blockchain.submit_transaction(values['sender_address'],
values['recipient_address'],
values['stock'], values['quantity'],
signature)
except Exception as error:
print("[!] Error: ", error)
return Response('Successfully added', 200)
def prepare_chain_for_tests():
pub, prv = cryptutil.fake_new_keys(2048)
pub2, prv2 = cryptutil.fake_new_keys(2048)
pub_txt = pub.exportKey("PEM").decode('ascii')
pub2_txt = pub2.exportKey("PEM").decode('ascii')
block_chain.mine_block(pub_txt)
block_chain.mine_block(pub2_txt)
block_chain.mine_block(pub_txt)
trx = Transaction(pub_txt, pub2_txt, 10)
trx.sign(prv)
block_chain.add_transaction(trx)
trx = Transaction(pub_txt, pub2_txt, 10)
trx.sign(prv)
block_chain.add_transaction(trx)
block_chain.mine_block(pub_txt)
