def put_connection(data_type, key, item_key, item_value):
if isinstance(item_value, dict):
value = crypto.pickle_hash(item_value).decode(errors='ignore')
write(item_value, item_value.pop('data_type'), value)
item_value = value
put('+'.join(['connection', data_type, item_key]), key, item_value)
put('+'.join(['connection', item_key, data_type]), item_value, key)
def verify():
updated_signature = transaction_dict.pop('signature')
transaction_dict['signature'] = None
if not verifier(crypto.pickle_hash(transaction_dict), updated_signature):
transaction_dict['signature'] = updated_signature
return False
transaction_dict['signature'] = updated_signature
try:
if not database.read('wallet', wallet_in) >= amount:
return False
except TypeError:
return False
tx_hash = crypto.pickle_hash(transaction_dict).decode(errors='ignore')
if database.read('transaction', tx_hash) is not None:
return False
validated[0] = True
transaction_hash[0] = tx_hash
return True
def _verify():
if not check_hash(crypto.pickle_hash(header)):
print("H1")
return False
if header['nonce'] > nonce_maximum:
return False
header['signature'] = None
if not verifier(crypto.pickle_hash(header), signature):
header['signature'] = signature
print("H2")
return False
header['signature'] = signature
for tx in transactions:
if not isinstance(tx, dict):
raise UserWarning
if not transaction(**tx)[1]():
print("H3")
return False
return True
def store():
if verify():
database.write(header, 'block',
crypto.pickle_hash(header).decode(errors='ignore'))
for tx in transactions:
transaction(**tx)[2]()
block_size = sys.getsizeof(pickle.dumps(header, protocol=4))
old_mean = interface.add_mean_block_size(block_size)
reward = config.reward_function(block_index, block_size, old_mean)
database.add('wallet', wallet, reward)
height = database.read('block_height', 'main')
if block_index == height: # < implies insertion | > does not exist
database.add('block_height', 'main', 1)
return
return False
def sign():
header['signature'] = None
header['signature'] = signer(crypto.pickle_hash(header))
def sign():
transaction_dict['signature'] = signer(crypto.pickle_hash(transaction_dict))
def random_hash():
header['nonce'] += 1
sign()
return crypto.pickle_hash(header)