def verify_signature(signed_transaction):
"""Verify the signature of a transaction
A valid transaction should have been signed `current_owner` corresponding private key.
Args:
signed_transaction (dict): a transaction with the `signature` included.
Returns:
bool: True if the signature is correct, False otherwise.
"""
data = signed_transaction.copy()
# if assignee field in the transaction, remove it
if 'assignee' in data:
data.pop('assignee')
signatures = data.pop('signatures')
for public_key_base58 in signed_transaction['transaction'][
'current_owners']:
public_key = PublicKey(public_key_base58)
if isinstance(signatures, list):
try:
signature = [
s['signature'] for s in signatures
if s['public_key'] == public_key_base58
]
except KeyError:
return False
if not len(signature) == 1:
return False
signature = signature[0]
else:
signature = signatures
if not public_key.verify(serialize(data), signature):
return False
return True
def verify_signature(self, signed_transaction):
"""Verify the signature of a transaction
A valid transaction should have been signed `current_owner` corresponding private key.
Args:
signed_transaction (dict): a transaction with the `signature` included.
Returns:
bool: True if the signature is correct, False otherwise.
"""
data = signed_transaction.copy()
# if assignee field in the transaction, remove it
if 'assignee' in data:
data.pop('assignee')
signature = data.pop('signature')
public_key_base58 = signed_transaction['transaction']['current_owner']
public_key = PublicKey(public_key_base58)
return public_key.verify(self.serialize(data), signature)
def test_sign_verify(self):
message = 'Hello World!'
public_key = PublicKey(self.PUBLIC_VALUE_COMPRESSED_B58)
private_key = PrivateKey(self.PRIVATE_VALUE_B58)
assert public_key.verify(message, private_key.sign(message)) is True
def test_sign_verify(self):
message = 'Hello World!'
public_key = PublicKey(self.PUBLIC_VALUE_COMPRESSED_B58)
private_key = PrivateKey(self.PRIVATE_VALUE_B58)
assert public_key.verify(message, private_key.sign(message)) == True
