ToolypetMCP
intermediate3 minutessecurity

Webhook Signature Verification

Verify incoming webhook signatures using HMAC to ensure requests are authentic and untampered.

webhookhmacverificationapi

इस रेसिपी का उपयोग कब करें

Services like Stripe, GitHub, and Slack sign webhook payloads with HMAC. Verifying these signatures prevents spoofed webhook attacks and ensures data integrity.

चरण

1

Create the shared webhook secret

प्रॉम्प्ट:Generate a webhook signing secret (256-bit hex)
2

Compute the expected signature

प्रॉम्प्ट:Generate HMAC-SHA256 of the webhook payload using the signing secret
3

Verify by comparing signatures

प्रॉम्प्ट:Hash the received signature header for comparison

अक्सर पूछे जाने वाले प्रश्न

Why use HMAC for webhook verification?

HMAC ensures two things: the request came from the legitimate sender (authentication) and the payload wasn't modified in transit (integrity). Simple API keys only provide authentication.

What happens if I don't verify webhooks?

An attacker could send fake webhook events to your endpoint — triggering unauthorized actions like refunds, account changes, or data modifications.

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