1 files changed, 50 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/sendgrid/helpers/eventwebhook/__init__.py b/.venv/lib/python3.12/site-packages/sendgrid/helpers/eventwebhook/__init__.py
new file mode 100644
index 00000000..c1ec7d1c
--- /dev/null
+++ b/.venv/lib/python3.12/site-packages/sendgrid/helpers/eventwebhook/__init__.py
@@ -0,0 +1,50 @@
+from ellipticcurve.ecdsa import Ecdsa
+from ellipticcurve.publicKey import PublicKey
+from ellipticcurve.signature import Signature
+
+from .eventwebhook_header import EventWebhookHeader
+
+class EventWebhook:
+    """
+    This class allows you to use the Event Webhook feature. Read the docs for
+    more details: https://sendgrid.com/docs/for-developers/tracking-events/event
+    """
+
+    def __init__(self, public_key=None):
+        """
+        Construct the Event Webhook verifier object
+        :param public_key: verification key under Mail Settings
+        :type public_key: string
+        """
+        self.public_key = self.convert_public_key_to_ecdsa(public_key) if public_key else public_key
+
+    def convert_public_key_to_ecdsa(self, public_key):
+        """
+        Convert the public key string to a ECPublicKey.
+
+        :param public_key: verification key under Mail Settings
+        :type public_key string
+        :return: public key using the ECDSA algorithm
+        :rtype PublicKey
+        """
+        return PublicKey.fromPem('\n-----BEGIN PUBLIC KEY-----\n'+public_key+'\n-----END PUBLIC KEY-----\n')
+
+    def verify_signature(self, payload, signature, timestamp, public_key=None):
+        """
+        Verify signed event webhook requests.
+
+        :param payload: event payload in the request body
+        :type payload: string
+        :param signature: value obtained from the 'X-Twilio-Email-Event-Webhook-Signature' header
+        :type signature: string
+        :param timestamp: value obtained from the 'X-Twilio-Email-Event-Webhook-Timestamp' header
+        :type timestamp: string
+        :param public_key: elliptic curve public key
+        :type public_key: PublicKey
+        :return: true or false if signature is valid
+        """
+        timestamped_payload = timestamp + payload
+        decoded_signature = Signature.fromBase64(signature)
+
+        key = public_key or self.public_key
+        return Ecdsa.verify(timestamped_payload, decoded_signature, key)