Verify Slack Webhook Signature from Incoming Messages

• Ensure message authenticity from Slack Webhooks
• Prevent unauthorized access to Slack integrations
• Maintain data integrity in communication workflows

Extracts the request timestamp and body from incoming Slack messages Encodes the body data to create a signature base string Generates a candidate signature using HMAC SHA256 with the signing secret Compares the generated signature with the signature received from Slack Handles verification results and manages errors appropriately

1. 1
   Import the workflow template into n8n
2. 2
   Set your Slack Signing Secret in the designated node
3. 3
   Connect the workflow to your Slack Webhook trigger
4. 4
   Test the workflow with incoming Slack messages