import base64
from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
from Crypto.Hash import SHA256
[docs]class JengaAuth:
def __init__(
self,
authorization_token: str,
private_key: str,
merchant_code: str,
env: str,
sandbox_url="https://sandbox.jengahq.io",
live_url="",
*args,
**kwargs
):
"""
:authorization_token: the bearer token used to access the API
:merchant_code: the merchant code provided by JengaHQ
:private_key: the path to the merchant private key
:env: the environment in which the API is to be used
:sandbox_url: the url used to access the Sandbox API
:live_url: the url used to access the Production API
"""
self.authorization_token = authorization_token
self.sandbox_url = sandbox_url
self.live_url = live_url
self.private_key = private_key
self.merchant_code = merchant_code
[docs] def signature(self, request_hash_fields: tuple):
"""
Build a String of concatenated values of the request fields with
following order: as specificied by the API endpoint
The resulting text is then signed with Private Key and Base64 encoded.
Takes a tuple of request fields in the order that they should be
concatenated, hashes them with SHA-256,signs the resulting hash and
returns a Base64 encoded string of the resulting signature
"""
data = "".join(request_hash_fields).encode()
private_key = open(self.private_key, "r").read()
rsa_key = RSA.importKey(private_key)
signer = PKCS1_v1_5.new(rsa_key)
digest = SHA256.new()
digest.update(data)
sign = signer.sign(digest)
return base64.b64encode(sign)