def sign_transaction(self, transaction, private_key, public_key=None):
"""Sign a transaction
Refer to the documentation of ``bigchaindb.util.sign_tx``
"""
return util.sign_tx(transaction, private_key, public_key)
def sign_transaction(transaction, private_key):
"""Sign a transaction
Refer to the documentation of ``bigchaindb.util.sign_tx``
"""
return util.sign_tx(transaction, private_key)
def sign_transaction(transaction, private_key):
"""Sign a transaction
Refer to the documentation of ``bigchaindb.util.sign_tx``
"""
return util.sign_tx(transaction, private_key)
def test_transform_create(b, user_private_key, user_public_key):
tx = util.create_tx(user_public_key, user_public_key, None, 'CREATE')
tx = util.transform_create(tx)
tx = util.sign_tx(tx, b.me_private)
assert tx['transaction']['current_owner'] == b.me
assert tx['transaction']['new_owner'] == user_public_key
assert util.verify_signature(tx)
def test_transform_create(b, user_sk, user_vk):
from bigchaindb import util
tx = util.create_tx(user_vk, user_vk, None, 'CREATE')
tx = util.transform_create(tx)
tx = util.sign_tx(tx, b.me_private)
assert tx['transaction']['fulfillments'][0]['current_owners'][0] == b.me
assert tx['transaction']['conditions'][0]['new_owners'][0] == user_vk
assert util.verify_signature(tx)
def create(self, payload=None):
"""Issue a transaction to create an asset.
Args:
payload (dict): the payload for the transaction.
Return:
The transaction pushed to the Federation.
"""
tx = util.create_tx(self.public_key,
self.public_key,
None,
operation='CREATE',
payload=payload)
signed_tx = util.sign_tx(tx, self.private_key)
return self._push(signed_tx)
def transfer(self, new_owner, tx_input, payload=None):
"""Issue a transaction to transfer an asset.
Args:
new_owner (str): the public key of the new owner
tx_input (str): the id of the transaction to use as input
payload (dict, optional): the payload for the transaction.
Return:
The transaction pushed to the Federation.
"""
tx = util.create_tx(self.public_key,
new_owner,
tx_input,
operation='TRANSFER',
payload=payload)
signed_tx = util.sign_tx(tx, self.private_key)
return self._push(signed_tx)
def create_transaction():
"""API endpoint to push transactions to the Federation.
Return:
A JSON string containing the data about the transaction.
"""
bigchain = current_app.config['bigchain']
val = {}
# `force` will try to format the body of the POST request even if the `content-type` header is not
# set to `application/json`
tx = request.get_json(force=True)
if tx['transaction']['operation'] == 'CREATE':
tx = util.transform_create(tx)
tx = util.sign_tx(tx, bigchain.me_private)
if not util.verify_signature(tx):
val['error'] = 'Invalid transaction signature'
val = bigchain.write_transaction(tx)
return flask.jsonify(**tx)