def test_post_transfer_transaction_endpoint(b, client):
from_keypair = crypto.generate_key_pair()
to_keypair = crypto.generate_key_pair()
tx = util.create_and_sign_tx(from_keypair[0], from_keypair[1], from_keypair[1], None, 'CREATE')
res = client.post(TX_ENDPOINT, data=json.dumps(tx))
tx_id = res.json['id']
transfer = util.create_and_sign_tx(from_keypair[0], from_keypair[1], to_keypair[1], tx_id)
res = client.post(TX_ENDPOINT, data=json.dumps(transfer))
assert res.json['transaction']['current_owner'] == from_keypair[1]
assert res.json['transaction']['new_owner'] == to_keypair[1]
def test_post_transfer_transaction_endpoint(b, client):
from_keypair = crypto.generate_key_pair()
to_keypair = crypto.generate_key_pair()
tx = util.create_and_sign_tx(from_keypair[0], from_keypair[1],
from_keypair[1], None, 'CREATE')
res = client.post(TX_ENDPOINT, data=json.dumps(tx))
tx_id = res.json['id']
transfer = util.create_and_sign_tx(from_keypair[0], from_keypair[1],
to_keypair[1], tx_id)
res = client.post(TX_ENDPOINT, data=json.dumps(transfer))
assert res.json['transaction']['current_owners'] == [from_keypair[1]]
assert res.json['transaction']['new_owners'] == [to_keypair[1]]
def createUser():
"""
:arg username: Desired Username of the user to be created
:arg password: Intended password
:arg type: Type of the user: This can be one of the following strings: 1.CUSTOMER 2. DONOR 3. COMPANY
:return: status of the operation and the keypairs when the user creation is success! If there is some error, it sends the errorMessage as well.
"""
# Specifying Mandatory Arguments
parser = reqparse.RequestParser()
parser.add_argument(UserAttributes.USERNAME.value, required=True, type=str)
parser.add_argument(UserAttributes.PASSWORD.value, required=True, type=str)
parser.add_argument(UserAttributes.TYPE.value, required=True, type=str)
username = request.get_json(force=False)[UserAttributes.USERNAME.value]
password = request.get_json(force=False)[UserAttributes.PASSWORD.value]
type = request.get_json(force=False)[UserAttributes.TYPE.value]
if (not checkIfTheUserExists(username)):
user_priv, user_pub = crypto.generate_key_pair()
userTuple = constructUserTuple(username, password, type, user_pub,
user_priv)
insertData(DatabaseNames.CUSTOM_DB.value, TableNames.USER.value,
userTuple)
return jsonify(status="success",
publicKey=user_pub,
privateKey=user_priv)
else:
return jsonify(status="error", errorMessage="Username Already Exists!")
def run_configure(args, skip_if_exists=False):
"""Run a script to configure the current node.
Args:
skip_if_exists (bool): skip the function if a conf file already exists
"""
config_path = args.config or bigchaindb.config_utils.CONFIG_DEFAULT_PATH
config_file_exists = os.path.exists(config_path)
if config_file_exists and skip_if_exists:
return
if config_file_exists and not args.yes:
want = input('Config file `{}` exists, do you want to override it? '
'(cannot be undone) [y/n]: '.format(config_path))
if not want:
return
# Patch the default configuration with the new values
conf = copy.deepcopy(bigchaindb._config)
print('Generating keypair')
conf['keypair']['private'], conf['keypair'][
'public'] = crypto.generate_key_pair()
if not args.yes:
for key in ('host', 'port', 'name'):
val = conf['database'][key]
conf['database'][key] = input(
'Database {}? (default `{}`): '.format(key, val)) or val
bigchaindb.config_utils.write_config(conf, config_path)
print('Ready to go!')
def test_transaction_signature(self, b):
sk, vk = crypto.generate_key_pair()
tx = b.create_transaction(vk, 'b', 'c', 'd')
tx_signed = b.sign_transaction(tx, sk)
assert 'signature' in tx_signed
assert b.verify_signature(tx_signed)
def run_configure(args, skip_if_exists=False):
"""Run a script to configure the current node.
Args:
skip_if_exists (bool): skip the function if a conf file already exists
"""
config_path = args.config or bigchaindb.config_utils.CONFIG_DEFAULT_PATH
proceed = args.yes
config_file_exists = os.path.exists(config_path)
if config_file_exists and skip_if_exists:
return
if config_file_exists and not proceed:
want = input('Config file `{}` exists, do you want to override it? '
'(cannot be undone) [y/n]: '.format(config_path))
if not want:
return
# Patch the default configuration with the new values
conf = bigchaindb._config
print('Generating keypair')
conf['keypair']['private'], conf['keypair']['public'] = generate_key_pair()
for key in ('host', 'port', 'name'):
val = conf['database'][key]
conf['database'][key] = input('Database {}? (default `{}`): '.format(key, val)) or val
bigchaindb.config_utils.write_config(conf, config_path)
print('Ready to go!')
def test_generate_key_pair(self):
private_value_base58, public_value_compressed_base58 = generate_key_pair(
)
assert PrivateKey.encode(
PrivateKey.decode(private_value_base58)) == private_value_base58
assert PublicKey.encode(*PublicKey.decode(
public_value_compressed_base58)) == public_value_compressed_base58
def run_configure(args, skip_if_exists=False):
"""Run a script to configure the current node.
Args:
skip_if_exists (bool): skip the function if a config file already exists
"""
config_path = args.config or bigchaindb.config_utils.CONFIG_DEFAULT_PATH
config_file_exists = False
# if the config path is `-` then it's stdout
if config_path != '-':
config_file_exists = os.path.exists(config_path)
if config_file_exists and skip_if_exists:
return
if config_file_exists and not args.yes:
want = input('Config file `{}` exists, do you want to override it? '
'(cannot be undone) [y/N]: '.format(config_path))
if want != 'y':
return
conf = copy.deepcopy(bigchaindb.config)
# Patch the default configuration with the new values
conf = bigchaindb.config_utils.update(
conf,
bigchaindb.config_utils.env_config(bigchaindb.config))
print('Generating keypair', file=sys.stderr)
conf['keypair']['private'], conf['keypair']['public'] = \
crypto.generate_key_pair()
if not args.yes:
for key in ('bind', ):
val = conf['server'][key]
conf['server'][key] = \
input('API Server {}? (default `{}`): '.format(key, val)) \
or val
for key in ('host', 'port', 'name'):
val = conf['database'][key]
conf['database'][key] = \
input('Database {}? (default `{}`): '.format(key, val)) \
or val
for key in ('host', 'port', 'rate'):
val = conf['statsd'][key]
conf['statsd'][key] = \
input('Statsd {}? (default `{}`): '.format(key, val)) \
or val
if config_path != '-':
bigchaindb.config_utils.write_config(conf, config_path)
else:
print(json.dumps(conf, indent=4, sort_keys=True))
print('Configuration written to {}'.format(config_path), file=sys.stderr)
print('Ready to go!', file=sys.stderr)
def test_if_federation_size_is_greater_than_one_ignore_past_blocks(self, b):
for _ in range(5):
b.federation_nodes.append(crypto.generate_key_pair()[1])
new_blocks = mp.Queue()
bs = BlockStream(new_blocks)
block_1 = b.create_block([])
new_blocks.put(block_1)
assert block_1 == bs.get()
def get_key_pair(request, format=None):
"""
获取秘钥
输入：无
输出：公钥和私钥
"""
private_key, public_key = crypto.generate_key_pair()
return Response({'private_key': private_key, 'public_key': public_key})
def test_post_create_transaction_endpoint(b, client):
keypair = crypto.generate_key_pair()
tx = util.create_and_sign_tx(keypair[0], keypair[1], keypair[1], None, 'CREATE')
res = client.post(TX_ENDPOINT, data=json.dumps(tx))
assert res.json['transaction']['fulfillments'][0]['current_owners'][0] == b.me
assert res.json['transaction']['conditions'][0]['new_owners'][0] == keypair[1]
def addUser(userName):
if False == users.__contains__(userName):
user = type('user', (), {'name': userName, 'pub': '', 'priv': ''})
user.priv, user.pub = crypto.generate_key_pair()
users[userName] = user
def test_if_federation_size_is_greater_than_one_ignore_past_blocks(self, b):
for _ in range(5):
b.federation_nodes.append(generate_key_pair()[1])
new_blocks = mp.Queue()
bs = BlockStream(new_blocks)
block_1 = b.create_block([])
new_blocks.put(block_1)
assert block_1 == bs.get()
def temp_client():
"""Create a new temporary client.
Return:
A client initialized with a keypair generated on the fly.
"""
private_key, public_key = crypto.generate_key_pair()
return Client(private_key=private_key, public_key=public_key, api_endpoint=bigchaindb.config["api_endpoint"])
def test_post_transfer_transaction_endpoint(b, client, user_vk, user_sk):
to_keypair = crypto.generate_key_pair()
input_valid = b.get_owned_ids(user_vk).pop()
transfer = util.create_and_sign_tx(user_sk, user_vk, to_keypair[1], input_valid)
res = client.post(TX_ENDPOINT, data=json.dumps(transfer))
assert res.json['transaction']['fulfillments'][0]['current_owners'][0] == user_vk
assert res.json['transaction']['conditions'][0]['new_owners'][0] == to_keypair[1]
def run_configure(args, skip_if_exists=False):
"""Run a script to configure the current node.
Args:
skip_if_exists (bool): skip the function if a config file already exists
"""
config_path = args.config or bigchaindb.config_utils.CONFIG_DEFAULT_PATH
config_file_exists = False
# if the config path is `-` then it's stdout
if config_path != '-':
config_file_exists = os.path.exists(config_path)
if config_file_exists and skip_if_exists:
return
if config_file_exists and not args.yes:
want = input('Config file `{}` exists, do you want to override it? '
'(cannot be undone) [y/N]: '.format(config_path))
if want != 'y':
return
conf = copy.deepcopy(bigchaindb.config)
# Patch the default configuration with the new values
conf = bigchaindb.config_utils.update(
conf, bigchaindb.config_utils.env_config(bigchaindb.config))
print('Generating keypair', file=sys.stderr)
conf['keypair']['private'], conf['keypair']['public'] = \
crypto.generate_key_pair()
if not args.yes:
for key in ('bind', ):
val = conf['server'][key]
conf['server'][key] = \
input('API Server {}? (default `{}`): '.format(key, val)) \
or val
for key in ('host', 'port', 'name'):
val = conf['database'][key]
conf['database'][key] = \
input('Database {}? (default `{}`): '.format(key, val)) \
or val
for key in ('host', 'port', 'rate'):
val = conf['statsd'][key]
conf['statsd'][key] = \
input('Statsd {}? (default `{}`): '.format(key, val)) \
or val
if config_path != '-':
bigchaindb.config_utils.write_config(conf, config_path)
else:
print(json.dumps(conf, indent=4, sort_keys=True))
print('Configuration written to {}'.format(config_path), file=sys.stderr)
print('Ready to go!', file=sys.stderr)
def test_post_create_transaction_endpoint(b, client):
keypair = crypto.generate_key_pair()
tx = util.create_and_sign_tx(keypair[0], keypair[1], keypair[1], None,
'CREATE')
res = client.post(TX_ENDPOINT, data=json.dumps(tx))
assert res.json['transaction']['current_owners'] == [b.me]
assert res.json['transaction']['new_owners'] == [keypair[1]]
def temp_client():
"""Create a new temporary client.
Return:
A client initialized with a keypair generated on the fly.
"""
private_key, public_key = crypto.generate_key_pair()
return Client(private_key=private_key, public_key=public_key, api_endpoint='http://localhost:5000/api/v1')
def temp_client():
"""Create a new temporary client.
Return:
A client initialized with a keypair generated on the fly.
"""
private_key, public_key = crypto.generate_key_pair()
return Client(private_key=private_key, public_key=public_key, api_endpoint=bigchaindb.config['api_endpoint'])
def generate_keys():
"""Generates a key pair.
Returns:
tuple: `(private_key, public_key)`. ECDSA key pair using the secp256k1 curve encoded
in base58.
"""
# generates and returns the keys serialized in hex
return generate_key_pair()
def test_transaction_signature(self, b):
sk, vk = generate_key_pair()
tx = b.create_transaction(vk, 'b', 'c', 'd')
with pytest.raises(KeyError) as excinfo:
b.verify_signature(tx)
tx_signed = b.sign_transaction(tx, sk)
assert 'signatures' in tx_signed
assert b.verify_signature(tx_signed)
def generate_key_pair():
"""API endpoint to generate key pair.
Returns:
a json data of key pair.
json format:
{
"public_key":public_key,
"private_key":private_key
}
"""
private_key, public_key = crypto.generate_key_pair()
dict = {"public_key": public_key, "private_key": private_key}
return flask.jsonify(**dict)
def generate_key_pair():
"""API endpoint to generate key pair.
Returns:
a json data of key pair.
json format:
{
"public_key":public_key,
"private_key":private_key
}
"""
private_key,public_key=crypto.generate_key_pair()
dict={
"public_key":public_key,
"private_key":private_key
}
return flask.jsonify(**dict)
def test_assign_transaction_multiple_nodes(self, b, user_public_key, user_private_key):
# create 5 federation nodes
for _ in range(5):
b.federation_nodes.append(crypto.generate_key_pair()[1])
# test assignee for several transactions
for _ in range(20):
input_tx = b.get_owned_ids(user_public_key).pop()
tx = b.create_transaction(user_public_key, 'b', input_tx, 'd')
tx_signed = b.sign_transaction(tx, user_private_key)
b.write_transaction(tx_signed)
# retrieve the transaction
response = r.table('backlog').get(tx_signed['id']).run(b.conn)
# check if the assignee is the federation_nodes
assert response['assignee'] in b.federation_nodes
def test_valid_block_voting_with_create_transaction(self, b):
q_new_block = mp.Queue()
genesis = b.create_genesis_block()
# create a `CREATE` transaction
test_user_priv, test_user_pub = generate_key_pair()
tx = b.create_transaction(b.me, test_user_pub, None, 'CREATE')
tx_signed = b.sign_transaction(tx, b.me_private)
assert b.is_valid_transaction(tx_signed)
# create valid block
block = b.create_block([tx_signed])
# assert block is valid
assert b.is_valid_block(block)
b.write_block(block, durability='hard')
# create queue and voter
voter = Voter(q_new_block)
# vote
voter.start()
# wait for vote to be written
time.sleep(1)
voter.kill()
# retrive block from bigchain
blocks = list(r.table('bigchain')
.order_by(r.asc((r.row['block']['timestamp'])))
.run(b.conn))
# validate vote
assert len(blocks[1]['votes']) == 1
vote = blocks[1]['votes'][0]
assert vote['vote']['voting_for_block'] == block['id']
assert vote['vote']['previous_block'] == genesis['id']
assert vote['vote']['is_block_valid'] is True
assert vote['vote']['invalid_reason'] is None
assert vote['node_pubkey'] == b.me
assert PublicKey(b.me).verify(util.serialize(vote['vote']), vote['signature']) is True
def test_valid_block_voting_with_create_transaction(self, b):
q_new_block = mp.Queue()
genesis = b.create_genesis_block()
# create a `CREATE` transaction
test_user_priv, test_user_pub = crypto.generate_key_pair()
tx = b.create_transaction(b.me, test_user_pub, None, 'CREATE')
tx_signed = b.sign_transaction(tx, b.me_private)
assert b.is_valid_transaction(tx_signed)
# create valid block
block = b.create_block([tx_signed])
# assert block is valid
assert b.is_valid_block(block)
b.write_block(block, durability='hard')
# create queue and voter
voter = Voter(q_new_block)
# vote
voter.start()
# wait for vote to be written
time.sleep(1)
voter.kill()
# retrive block from bigchain
blocks = list(r.table('bigchain')
.order_by(r.asc((r.row['block']['timestamp'])))
.run(b.conn))
# validate vote
assert len(blocks[1]['votes']) == 1
vote = blocks[1]['votes'][0]
assert vote['vote']['voting_for_block'] == block['id']
assert vote['vote']['previous_block'] == genesis['id']
assert vote['vote']['is_block_valid'] is True
assert vote['vote']['invalid_reason'] is None
assert vote['node_pubkey'] == b.me
assert crypto.VerifyingKey(b.me).verify(util.serialize(vote['vote']), vote['signature']) is True
def create_common_transaction(request, format=None):
"""
通用交易插入函数
输入：数据，前一个交易id(previous_process_tx_id)
输出：交易id
"""
data = request.data
previous_process_tx_id = data.pop('previous_process_tx_id', None)
# 将content转为unicode string存储
content = str(data['content']).encode('unicode-escape')
private_key, public_key = crypto.generate_key_pair()
tx = b.create_transaction(b.me,
public_key,
None,
'CREATE',
payload={
'previous_process_tx_id':
previous_process_tx_id,
'content': content
})
tx_signed = b.sign_transaction(tx, b.me_private)
b.write_transaction(tx_signed)
return Response({'id': tx_signed['id']})
def test_transaction_signature_multiple_owners(self, b):
num_current_owners = 42
sk, vk = [], []
for _ in range(num_current_owners):
sk_, vk_ = generate_key_pair()
sk.append(sk_)
vk.append(vk_)
tx = b.create_transaction(vk, 'b', 'c', 'd')
tx_signed = tx
with pytest.raises(KeyError) as excinfo:
b.verify_signature(tx_signed)
for i in range(num_current_owners):
if i > 0:
assert b.verify_signature(tx_signed) is False
tx_signed = b.sign_transaction(tx_signed, sk[i], vk[i])
assert 'signatures' in tx_signed
assert 'public_key' in tx_signed['signatures'][0]
assert 'signature' in tx_signed['signatures'][0]
assert len(tx_signed['signatures']) == num_current_owners
assert b.verify_signature(tx_signed)
import copy
import json
import cryptoconditions as cc
from bigchaindb import util, crypto
signature_treshold = 1
# signature_treshold = 2
# Create some new testusers
thresholduser1_priv, thresholduser1_pub = crypto.generate_key_pair()
thresholduser2_priv, thresholduser2_pub = crypto.generate_key_pair()
# Retrieve the last transaction of testuser2
tx_retrieved_id = b.get_owned_ids(testuser2_pub).pop()
# Create a base template for a 1-input/2-output transaction
threshold_tx = b.create_transaction(testuser2_pub, [thresholduser1_pub, thresholduser2_pub], tx_retrieved_id, 'TRANSFER')
# Create a Threshold Cryptocondition
threshold_condition = cc.ThresholdSha256Fulfillment(threshold=signature_treshold)
threshold_condition.add_subfulfillment(cc.Ed25519Fulfillment(public_key=thresholduser1_pub))
threshold_condition.add_subfulfillment(cc.Ed25519Fulfillment(public_key=thresholduser2_pub))
# Update the condition in the newly created transaction
threshold_tx['transaction']['conditions'][0]['condition'] = {
'details': json.loads(threshold_condition.serialize_json()),
'uri': threshold_condition.condition.serialize_uri()
}
# Conditions have been updated, so the transaction hash (ID) needs updating
import copy
import json
import cryptoconditions as cc
from bigchaindb import util, crypto
signature_treshold = 1
# signature_treshold = 2
# Create some new testusers
thresholduser1_priv, thresholduser1_pub = crypto.generate_key_pair()
thresholduser2_priv, thresholduser2_pub = crypto.generate_key_pair()
# Retrieve the last transaction of testuser2
tx_retrieved_id = b.get_owned_ids(testuser2_pub).pop()
# Create a base template for a 1-input/2-output transaction
threshold_tx = b.create_transaction(testuser2_pub,
[thresholduser1_pub, thresholduser2_pub],
tx_retrieved_id, 'TRANSFER')
# Create a Threshold Cryptocondition
threshold_condition = cc.ThresholdSha256Fulfillment(
threshold=signature_treshold)
threshold_condition.add_subfulfillment(
cc.Ed25519Fulfillment(public_key=thresholduser1_pub))
threshold_condition.add_subfulfillment(
cc.Ed25519Fulfillment(public_key=thresholduser2_pub))
# Update the condition in the newly created transaction
threshold_tx['transaction']['conditions'][0]['condition'] = {
def keys_new(): return crypto.generate_key_pair()
from bigchaindb import Bigchain
from bigchaindb import crypto
from tornado import websocket, ioloop, web
from tornado.gen import coroutine
from tornado import gen
from .stream_coin import pay_royalties
import time
import json
import multiprocessing as mp
clients = []
coins_seen = []
play_until = time.time()
label_sk, label_vk = crypto.generate_key_pair()
artist_sk, artist_vk = crypto.generate_key_pair()
artist_share = 0
label_share = 0
royalties_queue = mp.Queue()
me = Bigchain().me
class StreamHandler(websocket.WebSocketHandler):
def check_origin(self, origin):
return True
def open(self):
if self not in clients:
clients.append(self)
print('Received connection from {}'.format(self))
# Parse the command-line arguments
desc = 'Write a set of keypairs to keypairs.py'
parser = argparse.ArgumentParser(description=desc)
parser.add_argument('num_pairs',
help='number of keypairs to write',
type=int)
args = parser.parse_args()
num_pairs = int(args.num_pairs)
# Generate and write the keypairs to keypairs.py
print('Writing {} keypairs to keypairs.py...'.format(num_pairs))
with open('keypairs.py', 'w') as f:
f.write('# -*- coding: utf-8 -*-\n')
f.write('"""A set of keypairs for use in deploying\n')
f.write('BigchainDB servers with a predictable set of keys.\n')
f.write('"""\n')
f.write('\n')
f.write('from __future__ import unicode_literals\n')
f.write('\n')
f.write('keypairs_list = [')
for pair_num in range(num_pairs):
keypair = crypto.generate_key_pair()
spacer = '' if pair_num == 0 else ' '
f.write("{}('{}',\n '{}'),\n".format(
spacer, keypair[0], keypair[1]))
f.write(' ]\n')
print('Done.')
def get_keys():
priv1,pub1 = crypto.generate_key_pair()
return jsonify({'public key': pub1, 'private key': priv1})
from bigchaindb import Bigchain
from bigchaindb import crypto
from tornado import websocket, ioloop, web
from tornado.gen import coroutine
from tornado import gen
from .stream_coin import pay_royalties
import time
import json
import multiprocessing as mp
clients = []
coins_seen = []
play_until = time.time()
label_sk, label_vk = crypto.generate_key_pair()
artist_sk, artist_vk = crypto.generate_key_pair()
artist_share = 0
label_share = 0
royalties_queue = mp.Queue()
me = Bigchain().me
class StreamHandler(websocket.WebSocketHandler):
def check_origin(self, origin):
return True
def open(self):
if self not in clients:
clients.append(self)
print('Received connection from {}'.format(self))
def on_close(self):
def transfer_transaction(request, format=None):
"""
创建Transfer交易
输入：前一个交易id(previous_process_tx_id)
交易发起方公钥(tx_originator_public_key)，
交易接收方公钥(tx_recipient_public_key)，
交易发起方私钥(tx_originator_private_key)，
人员(who: {original: whoItem, goto: whoItem})，
whoItem: user_id, user_type, user_name, company_name, company_id, u_company_id
地点(where: {original: whereItem, goto: whereItem})
whereItem: nation, region, place, region_id
时间(when: make_date, send_date, receive_date, expire_date)
物品(thing: thing_type_id, thing_type_name, thing_id, thing_name, origin_place, thing_order_quantity, thing_order_batch, price)
输出：交易id和剩余物品的秘钥
"""
# get total numbers
data = request.data
tx_originator_public_key = data.pop('tx_originator_public_key', None)
tx_originator_private_key = data.pop('tx_originator_private_key', None)
tx_recipient_public_key = data.pop('tx_recipient_public_key', None)
input_list = b.get_owned_ids(tx_originator_public_key)
if input_list == []:
return Response(status=status.HTTP_204_NO_CONTENT)
input = input_list.pop()
tx = b.get_transaction(input['txid'])
total = tx['transaction']['data']['payload']['thing'][
'thing_order_quantity']
# transfer
tx = b.create_transaction(tx_originator_public_key,
tx_recipient_public_key,
input,
'TRANSFER',
payload=data)
tx_signed = b.sign_transaction(tx, tx_originator_private_key)
b.write_transaction(tx_signed)
# deal with remains
remain = int(total) - int(data['thing']['thing_order_quantity'])
if remain > 0:
time.sleep(5)
data['thing']['thing_order_quantity'] = str(remain)
data['who']['goto'] = copy.deepcopy(data['who']['original'])
data['where']['goto'] = copy.deepcopy(data['where']['original'])
for key, value in data['who']['original'].items():
data['who']['original'][key] = None
for key, value in data['where']['original'].items():
data['where']['original'][key] = None
data['when']['receive_date'] = data['when']['send_date']
data['previous_process_tx_id'] = tx_signed['id']
private_key, public_key = crypto.generate_key_pair()
tx = b.create_transaction(b.me,
public_key,
None,
'CREATE',
payload=data)
tx_signed_2 = b.sign_transaction(tx, b.me_private)
b.write_transaction(tx_signed_2)
return Response({
'txs': {
'transfer_id': tx_signed['id'],
'create_id': tx_signed_2['id']
},
'key_pair': {
'public_key': public_key,
'private_key': private_key
}
})
return Response({'transfer tx id': tx_signed['id']})
def transactions(request, format=None):
'''
URL:
transactions/
Use for:
get or create bill transaction
Para:
GET:
field - filter every json dict
operation - CREATE or TRANSFER
limit - limit list length, less than 100
sortby - sort by specified field, for timestamp
order - the order for sort, asc or des, default asc
receive_pubk - public key to get all transactions`id by receive,
do not support some paras like limit
origin_pubk - public key to get all transactions`id by origin
POST:
origin_pubk - transaction origin public key, if no this value, will
create one CREATE transaction
origin_prik - transaction origin private key, if no this value, will
create one CREATE transaction
pre_txid - previous transaction id
receive_pubk - transaction receive public key
data - data json string
'''
if request.method == 'GET':
# get paras
fields = request.GET.getlist('field')
limit = request.GET.get('limit', None)
sortby = request.GET.get('sortby', None)
order = request.GET.get('order', None)
receive_pubk = request.GET.get('receive_pubk', None)
origin_pubk = request.GET.get('origin_pubk', None)
operation = request.GET.get('operation', None)
# make sort function for rethinkdb driver
sort_func = None
if sortby != None:
sort_func = lambda ts: ts['transaction'][sortby]
# make filter
filtes_funcs = []
if receive_pubk != None:
filtes_funcs.append(lambda x: x['transaction'].contains(lambda x: \
x['conditions'].contains(lambda x: x['new_owners'].\
contains(receive_pubk))))
elif origin_pubk != None:
filtes_funcs.append(lambda x: x['transaction'].contains(lambda x: \
x['fulfillments'].contains(lambda x: x['current_owners'].\
contains(origin_pubk))))
if operation != None:
filtes_funcs.append(lambda t: t.contains(\
lambda x: x['transaction']['operation'] == operation))
# get datas
datas = rdb_select(sortby=sort_func,
order=order,
filtes=filtes_funcs,
keys=['block', 'transactions'],
limit=limit)
# can`t pluck, limit this data by rethinkdb driver, handle with hand
# limit
try:
limit = int(limit)
except TypeError:
limit = 100
limit = min(100, limit) # limit less than 100
# return datas by max operation
if limit == 1 and sortby != None:
return Response(field_filter(datas[0], fields))
# return normal datas, it`s format willbe [[d1, ...], [d2, ..], ...]
# change format to [d1, d2, d3...]
ans = []
for alist in datas:
for data in alist:
if len(ans) >= limit:
return Response(ans)
ans.append(field_filter(data, fields)) # filter data
return Response(ans)
elif request.method == 'POST':
# get paras
origin_pubk = request.POST.get('origin_pubk', None)
origin_prik = request.POST.get('origin_prik', None)
pre_txid = request.POST.get('pre_txid', None)
receive_pubk = request.POST.get('receive_pubk', None)
data = request.POST.get('data', '{}')
# make sure paras
receive_prik = ''
bdb_input = None
bdb_type = 'CREATE'
bdb = Bigchain()
try:
data = json.loads(data) # json string to json data
except JSONDecodeError:
return error(400, 'Wrong json string format')
# bill data format checker
left_money = 0
pre_data = None
billm = 'Bill_amount_money'
bill = 'bill'
if billm not in data.keys():
return error(400, 'Wrong data format')
# make sure paras
if receive_pubk == None: # create a pair
receive_prik, receive_pubk = crypto.generate_key_pair()
if origin_pubk == None: # create transaction
origin_pubk = bdb.me
origin_prik = bdb.me_private
else: # transfer transaction
bdb_type = 'TRANSFER'
if origin_prik == None:
return error(400, 'need private key')
if pre_txid == None:
return error(400, 'need pre_txid when transfer')
# get previous bill, and check it
pre_tx = bdb.get_transaction(pre_txid)
if pre_tx == None:
return error(400, 'This pre_txid does not exist')
# make input, in our case, the key 'cid' will always be 0
bdb_input = {'cid': 0, 'txid': pre_txid}
# check bdb_input belong origin
if bdb_input not in bdb.get_owned_ids(origin_pubk):
return error(400, 'This pre_txid does not belong the origin')
# money check
pre_data = pre_tx['transaction']['data']['payload']
pre_money = pre_data[bill][billm]
now_money = data[billm]
if now_money > pre_money:
return error(400, 'money to less')
left_money = pre_money - now_money
# start transaction
tx = bdb.create_transaction(origin_pubk,
receive_pubk,
bdb_input,
bdb_type,
payload={
'pre_txid': pre_txid,
'bill': data
})
bdb.write_transaction(bdb.sign_transaction(tx, origin_prik))
# create new bill with left money
if pre_data != None:
# change data
pre_data[bill][billm] = left_money
pre_data['pre_txid'] = pre_txid
ltx = bdb.create_transaction(bdb.me,
origin_pubk,
None,
'CREATE',
payload=pre_data)
bdb.write_transaction(bdb.sign_transaction(ltx, bdb.me_private))
return Response({
'txid': tx['id'],
'receive_pubk': receive_pubk,
'receive_prik': receive_prik
})
__author__ = 'PC-LiNing'
from bigchaindb import Bigchain
from bigchaindb import crypto
import time
b = Bigchain()
# user A
testuser1_priv, testuser1_pub = crypto.generate_key_pair()
print("testuser1_priv:" + testuser1_priv)
print("testuser1_pub:" + testuser1_pub)
payload = {
"msg": "first charge for user A",
"issue": "charge",
"category": "currency",
"amount": 300,
"asset": "",
"account": 0,
"previous": "genesis",
"trader": ""
}
tx = b.create_transaction(b.me, testuser1_pub, None, 'CREATE', payload=payload)
tx_signed = b.sign_transaction(tx, b.me_private)
if b.is_valid_transaction(tx_signed):
b.write_transaction(tx_signed)
print(tx_signed)
# user B
testuser2_priv, testuser2_pub = crypto.generate_key_pair()
print("testuser2_priv:" + testuser2_priv)
__author__ = 'PC-LiNing'
from bigchaindb import Bigchain
from bigchaindb import crypto
import time
b=Bigchain()
# user A
testuser1_priv, testuser1_pub = crypto.generate_key_pair()
print("testuser1_priv:"+testuser1_priv)
print("testuser1_pub:"+testuser1_pub)
payload = {
"msg" : "first charge for user A",
"issue" : "charge",
"category" : "currency",
"amount" : 300,
"asset":"",
"account":0,
"previous":"genesis",
"trader":""
}
tx = b.create_transaction(b.me, testuser1_pub, None, 'CREATE', payload=payload)
tx_signed = b.sign_transaction(tx, b.me_private)
if b.is_valid_transaction(tx_signed):
b.write_transaction(tx_signed)
print(tx_signed)
# user B
testuser2_priv, testuser2_pub = crypto.generate_key_pair()
import json
from time import sleep
import cryptoconditions as cc
from bigchaindb import Bigchain, util, crypto, exceptions
b = Bigchain()
"""
Create a Digital Asset
"""
# create a test user
testuser1_priv, testuser1_pub = crypto.generate_key_pair()
# define a digital asset data payload
digital_asset_payload = {'msg': 'Hello BigchainDB!'}
# a create transaction uses the operation `CREATE` and has no inputs
tx = b.create_transaction(b.me, testuser1_pub, None, 'CREATE', payload=digital_asset_payload)
# all transactions need to be signed by the user creating the transaction
tx_signed = b.sign_transaction(tx, b.me_private)
# write the transaction to the bigchain
# the transaction will be stored in a backlog where it will be validated,
# included in a block, and written to the bigchain
b.write_transaction(tx_signed)
def keys_new():
return crypto.generate_key_pair()
from flask import Flask
from flask import jsonify
from flask import request
#libraries for bigchain functionality
from bigchaindb import Bigchain
from bigchaindb import crypto
from bigchaindb import util
import cryptoconditions as cc
app = Flask(__name__)
#generate a public and private key (internal user)
priv,pub = crypto.generate_key_pair()
#instantiate your chain
b = Bigchain()
#GET: public and private key of a new user to be generated
#User Input: None
@app.route('/getKeys', methods=['GET'])
def get_keys():
priv1,pub1 = crypto.generate_key_pair()
return jsonify({'public key': pub1, 'private key': priv1})
#POST: a transfer transaction
#User Input: A json object, an example is shown below:
def generate_key_pair():
return crypto.generate_key_pair()
def test_generate_key_pair(self):
private_value_base58, public_value_compressed_base58 = generate_key_pair()
assert PrivateKey.encode(
PrivateKey.decode(private_value_base58)) == private_value_base58
assert PublicKey.encode(
*PublicKey.decode(public_value_compressed_base58)) == public_value_compressed_base58
def generate_key_pair(self):
return crypto.generate_key_pair()
# The following HEX string represents an ECC public key belonging to the secret key
# of a crypto tag inside a product
# '6ABCA66658E30D4808F6DDABD900723BFB3DE8BF77F86B3DC84584D7F2039B1FED0
# 4CFE79C39390D7A6240B7713FFF1891AB687E62ADAE8460FCF040D02105D2'
# Define the product public key derived from a Riddle&Code crypto tag
tag_pubkey = b'6ABCA66658E30D4808F6DDABD900723BFB3DE8BF77F86B3DC84584D7F2039B1FED04CFE79C39390D7A6240B7713FFF1891AB687E62ADAE8460FCF040D02105D2'
# Translate public key from tag into a bicgchaindb compliant address
# Results in '5GjT173hXbwm9R5x2Sk4y6NgeqCCA2JrwdyZdzKPvC6a'
prdct_pubkey = binascii.hexlify(tag_pubkey)
prdct_pubkey = hashlib.sha3_256(prdct_pubkey).digest()
prdct_pubkey = base58.b58encode(prdct_pubkey)
# Define a private and public key representing the producer
prdusr_privkey, prdusr_pubkey = crypto.generate_key_pair()
# Define a private and public key representing a future product owner
ownr_privkey, ownr_pubkey = crypto.generate_key_pair()
# Create a multisig transaction including the three pre-produced public keys signed with
# master key of the BigchainDB instance holder
tx_msig = b.create_transaction(b.me, [prdct_pubkey, prdusr_pubkey, ownr_pubkey], None, 'CREATE')
# Sign the multisig
tx_msig_signed = b.sign_transaction(tx_msig, b.me_private)
# Write the signed multig transaction to the federated BigchainDB
# Results in {'deleted': 0, 'unchanged': 0, 'errors': 0, 'skipped': 0, 'inserted': 1, 'replaced': 0}
b.write_transaction(tx_msig_signed)