How do I validate webhook signatures?

How do I validate webhook signatures?

To validate webhook signatures, you typically need to follow these steps: 1. Retrieve the signature from the request headers. 2. Use the secret key to create a hash of the payload. 3. Compare the generated hash with the signature from the headers.

What hashing algorithm should I use?

Commonly, HMAC with SHA-256 is used for hashing webhook payloads. It provides a good balance of security and performance.

Can you show me a code example?

Sure! Here's a simple example in Python:

import hmac
import hashlib

def validate_signature(secret, payload, signature):
    expected_signature = hmac.new(secret.encode(), payload.encode(), hashlib.sha256).hexdigest()
    return hmac.compare_digest(expected_signature, signature)

What if the signatures don't match?

If the signatures don't match, it usually means the request is not authentic. You should reject the request and log the incident for further investigation.