def generate_callback_data(
amount=100,
sale_order_id=1,
ref_id=1,
res_code=1,
res_message=1,
pay_gate_trans_id=1,
rrn=1,
last_four_digit_of_pan=1,
):
rijndael = RijndaelCbc(
key=base64.b64decode(config["key"]),
iv=base64.b64decode(config["iv"]),
padding=Pkcs7Padding(32),
block_size=32,
)
data_array = [
str(amount), # Transaction amount
str(sale_order_id), # Transaction Order ID
str(ref_id), # Transaction ID
str(res_code), # Result Code
str(res_message), # Result Message
str(pay_gate_trans_id), # Transaction inquiry id
str(rrn), # Bank Reference ID
str(last_four_digit_of_pan), # Last four digits of payer card ID
]
return {
"ReturningParams":
base64.b64encode(rijndael.encrypt(",".join(data_array).encode()))
}
def encrypt(self, plainText):
encryptor = RijndaelCbc(self.key,
self.encryptIV,
padding=ZeroPadding(BLOCK_SIZE),
block_size=BLOCK_SIZE)
encText = encryptor.encrypt(plainText)
self.encryptIV = encText[-BLOCK_SIZE:]
return encText
def encrypt(self, plain_data: Union[str, bytes]) -> bytes:
if isinstance(plain_data, str):
plain_data = bytes(plain_data, encoding="latin_1")
cbc = RijndaelCbc(key=self.key,
iv=self.encrypt_init_vector,
padding=ZeroPadding(self.BLOCK_SIZE),
block_size=self.BLOCK_SIZE)
encrypted_data = cbc.encrypt(plain_data)
self.encrypt_init_vector = encrypted_data[-self.BLOCK_SIZE:]
return encrypted_data
def encrypt(iv, key, block_size, plaintext):
rijndael_cbc = RijndaelCbc(
key=key, # if it is a string we can use base64.b64decode(key),
iv=iv,
padding=ZeroPadding(block_size),
block_size=block_size)
ciphertext = rijndael_cbc.encrypt(plaintext)
return ciphertext
def test_rijndael_cbc(self):
key = 'qBS8uRhEIBsr8jr8vuY9uUpGFefYRL2HSTtrKhaI1tk='
iv = 'kByhT6PjYHzJzZfXvb8Aw5URMbQnk6NM+g3IV5siWD4='
rijndael_cbc = RijndaelCbc(key=base64.b64decode(key),
iv=base64.b64decode(iv),
padding=ZeroPadding(32),
block_size=32)
plain_text = b'Mahdi'
padded_text = plain_text.ljust(32, b'\x1b')
cipher = rijndael_cbc.encrypt(padded_text)
cipher_text = base64.b64encode(cipher)
self.assertEqual(cipher_text,
b'1KGc0PMt52Xbell+2y9qDJJp/Yy6b1JR1JWI3f9ALF4=')
self.assertEqual(rijndael_cbc.decrypt(cipher), padded_text)
# Long blocks
plain_text = b'lorem' * 50
padded_text = plain_text.ljust(32, b'\x1b')
cipher = rijndael_cbc.encrypt(padded_text)
self.assertEqual(rijndael_cbc.decrypt(cipher), padded_text)
def encrypt(key, block_size, plaintext):
iv = key['iv']
kc = key['kc']
ki = key['ki']
rijndael_cbc = RijndaelCbc(
key=kc, # if it is a string we can use base64.b64decode(key),
iv=iv,
padding=ZeroPadding(block_size),
block_size=block_size)
ciphertext = rijndael_cbc.encrypt(plaintext)
rijndael_cbc = RijndaelCbc(
key=ki, # if it is a string we can use base64.b64decode(key),
iv=iv,
padding=ZeroPadding(block_size),
block_size=block_size)
MAC = rijndael_cbc.encrypt(plaintext)[-block_size:]
return ciphertext, MAC
def test_rijndael_cbc(self) -> None:
key = "qBS8uRhEIBsr8jr8vuY9uUpGFefYRL2HSTtrKhaI1tk="
iv = "kByhT6PjYHzJzZfXvb8Aw5URMbQnk6NM+g3IV5siWD4="
rijndael_cbc = RijndaelCbc(
key=base64.b64decode(key),
iv=base64.b64decode(iv),
padding=Pkcs7Padding(32),
block_size=32,
)
with open(Path(__file__).parent / "lorem_ipsum.txt", "rb") as f:
plain_text = f.read()
TIMES = 100
start_time = time.perf_counter()
for _ in range(TIMES):
cipher = rijndael_cbc.encrypt(plain_text)
plain_text = rijndael_cbc.decrypt(cipher)
end_time = time.perf_counter()
print(f"\n{TIMES} encryptions in {end_time - start_time:.2f} seconds")
class AsanPardakhtGateway(Gateway):
"""
Irankish
TODO: transaction.pan not implemented
Home: http://asanpardakht.ir/
Documentation: http://asanpardakht.ir/ipgdownload/ipgdoc.pdf
"""
__gateway_name__ = 'asan_pardakht'
__gateway_unit__ = 'IRR'
__config_params__ = [
'key', 'iv', 'username', 'password', 'merchant_config_id',
'callback_url', 'proxies'
]
_server_url = 'https://services.asanpardakht.net/paygate/merchantservices.asmx?WSDL'
def __init__(self, config):
super().__init__(config)
self.rijndael = RijndaelCbc(key=base64.b64decode(config['key']),
iv=base64.b64decode(config['iv']),
padding=Pkcs7Padding(32),
block_size=32)
def _get_request_payload(self,
transaction: Transaction,
additional_data: str = '',
accounts: List[Tuple[str, str]] = None):
"""
Get request payload
:param transaction:
:param additional_data:
:param accounts: More (Shaba) accounts, Maximum 7 accounts can use.
eg: [('shaba1', '100'), ('shaba2', '200'))]
:return:
"""
accounts = [n for account in accounts
for n in account] if accounts else []
return [
'1',
self.config['username'],
self.config['password'],
str(transaction.order_id),
str(transaction.amount),
datetime.now().strftime('%Y%m%d %I%M%S'),
additional_data, # Additional data maximum length is 100 characters
self.config['callback_url'],
'0' # Payment id (optional)
] + accounts
def _get_encrypted_request(self, transaction: Transaction):
return base64.b64encode(
self.rijndael.encrypt(','.join(
self._get_request_payload(transaction)).encode()))
def _parse_callback_data(self, data: dict):
data = self.rijndael.decrypt(base64.b64decode(
data['ReturningParams'])).decode()
exploded_data = data.split(',')
return dict(
amount=exploded_data[0], # Transaction amount
sale_order_id=exploded_data[1], # Transaction Order ID
ref_id=exploded_data[2], # Transaction ID
res_code=exploded_data[3], # Result Code
res_message=exploded_data[4], # Result Message
pay_gate_trans_id=exploded_data[5], # Transaction inquiry id
rrn=exploded_data[6], # Bank Reference ID
last_four_digit_of_pan=exploded_data[
7], # Last four digits of payer card ID
)
@property
def _encrypted_credentials(self):
return base64.b64encode(
self.rijndael.encrypt(','.join(
[self.config['username'], self.config['password']]).encode()))
def get_redirection(self, transaction) -> Redirection:
return Redirection(url='https://asan.shaparak.ir/',
body_params=dict(RefId=transaction.id,
RedirctToIPGFORM='true'),
method='post')
def request_transaction(self, transaction: Transaction) -> Transaction:
client = Client(self._server_url)
if 'proxies' in self.config:
client.transport.session.proxies = self.config['proxies']
try:
params = {
'merchantConfigurationID': self.config['merchant_config_id'],
'encryptedRequest': self._get_encrypted_request(transaction)
}
result = client.service.RequestOperation(**params)
if not result:
raise TransactionError('AsanPardakht: invalid information.')
if result[0:1] == '0':
exploded_result = str(result).split(
',') # Should have two part [XX,YY]
transaction.id = exploded_result[1]
else:
raise TransactionError(
'AsanPardakht: invalid information. code: %s' %
str(result))
except zeep_exceptions.Fault:
raise TransactionError('AsanPardakht: invalid information.')
except zeep_exceptions.Error:
raise GatewayNetworkError
return transaction
def validate_transaction(self, data: dict) -> Transaction:
parsed_data = self._parse_callback_data(data)
transaction = Transaction()
transaction.id = parsed_data['ref_id']
transaction.meta = parsed_data
if int(parsed_data['res_code']) == 0:
transaction.validate_status = True
return transaction
def verify_transaction(self, transaction: Transaction, data):
try:
parsed_data = self._parse_callback_data(data)
params = {
'merchantConfigurationID':
int(self.config['merchant_config_id']),
'encryptedCredentials': self._encrypted_credentials,
'payGateTranID': parsed_data['pay_gate_trans_id']
}
client = Client(self._server_url)
if 'proxies' in self.config:
client.transport.session.proxies = self.config['proxies']
verify_result = int(client.service.RequestVerification(**params))
if verify_result == 505:
raise TransactionAlreadyPaidError(
'AsanPardakht: transaction already verified')
elif verify_result != 500:
raise TransactionError(
'AsanPardakht: invalid transaction, %s' % verify_result)
reconcile_result = int(
client.service.RequestReconciliation(**params))
if reconcile_result != 600:
raise TransactionError(
'AsanPardakht: invalid transaction settlement, %s' %
reconcile_result)
except zeep_exceptions.Error:
raise GatewayNetworkError
return transaction
